[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/f2fs/f2fs.h b/src/kernel/linux/v4.19/fs/f2fs/f2fs.h
new file mode 100644
index 0000000..8db50dd
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/f2fs/f2fs.h
@@ -0,0 +1,3784 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fs/f2fs/f2fs.h
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ */
+#ifndef _LINUX_F2FS_H
+#define _LINUX_F2FS_H
+
+#include <linux/uio.h>
+#include <linux/types.h>
+#include <linux/page-flags.h>
+#include <linux/buffer_head.h>
+#include <linux/slab.h>
+#include <linux/crc32.h>
+#include <linux/magic.h>
+#include <linux/kobject.h>
+#include <linux/sched.h>
+#include <linux/cred.h>
+#include <linux/vmalloc.h>
+#include <linux/bio.h>
+#include <linux/blkdev.h>
+#include <linux/quotaops.h>
+#include <crypto/hash.h>
+
+#include <linux/fscrypt.h>
+#include <linux/fsverity.h>
+
+#ifdef CONFIG_F2FS_CHECK_FS
+#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
+#else
+#define f2fs_bug_on(sbi, condition) \
+ do { \
+ if (unlikely(condition)) { \
+ WARN_ON(1); \
+ set_sbi_flag(sbi, SBI_NEED_FSCK); \
+ } \
+ } while (0)
+#endif
+
+enum {
+ FAULT_KMALLOC,
+ FAULT_KVMALLOC,
+ FAULT_PAGE_ALLOC,
+ FAULT_PAGE_GET,
+ FAULT_ALLOC_BIO,
+ FAULT_ALLOC_NID,
+ FAULT_ORPHAN,
+ FAULT_BLOCK,
+ FAULT_DIR_DEPTH,
+ FAULT_EVICT_INODE,
+ FAULT_TRUNCATE,
+ FAULT_READ_IO,
+ FAULT_CHECKPOINT,
+ FAULT_DISCARD,
+ FAULT_WRITE_IO,
+ FAULT_MAX,
+};
+
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+#define F2FS_ALL_FAULT_TYPE ((1 << FAULT_MAX) - 1)
+
+struct f2fs_fault_info {
+ atomic_t inject_ops;
+ unsigned int inject_rate;
+ unsigned int inject_type;
+};
+
+extern const char *f2fs_fault_name[FAULT_MAX];
+#define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
+#endif
+
+/*
+ * For mount options
+ */
+#define F2FS_MOUNT_BG_GC 0x00000001
+#define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
+#define F2FS_MOUNT_DISCARD 0x00000004
+#define F2FS_MOUNT_NOHEAP 0x00000008
+#define F2FS_MOUNT_XATTR_USER 0x00000010
+#define F2FS_MOUNT_POSIX_ACL 0x00000020
+#define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
+#define F2FS_MOUNT_INLINE_XATTR 0x00000080
+#define F2FS_MOUNT_INLINE_DATA 0x00000100
+#define F2FS_MOUNT_INLINE_DENTRY 0x00000200
+#define F2FS_MOUNT_FLUSH_MERGE 0x00000400
+#define F2FS_MOUNT_NOBARRIER 0x00000800
+#define F2FS_MOUNT_FASTBOOT 0x00001000
+#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
+#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
+#define F2FS_MOUNT_DATA_FLUSH 0x00008000
+#define F2FS_MOUNT_FAULT_INJECTION 0x00010000
+#define F2FS_MOUNT_ADAPTIVE 0x00020000
+#define F2FS_MOUNT_LFS 0x00040000
+#define F2FS_MOUNT_USRQUOTA 0x00080000
+#define F2FS_MOUNT_GRPQUOTA 0x00100000
+#define F2FS_MOUNT_PRJQUOTA 0x00200000
+#define F2FS_MOUNT_QUOTA 0x00400000
+#define F2FS_MOUNT_INLINE_XATTR_SIZE 0x00800000
+#define F2FS_MOUNT_RESERVE_ROOT 0x01000000
+#define F2FS_MOUNT_DISABLE_CHECKPOINT 0x02000000
+
+#define F2FS_OPTION(sbi) ((sbi)->mount_opt)
+#define clear_opt(sbi, option) (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
+#define set_opt(sbi, option) (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
+#define test_opt(sbi, option) (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
+
+#define ver_after(a, b) (typecheck(unsigned long long, a) && \
+ typecheck(unsigned long long, b) && \
+ ((long long)((a) - (b)) > 0))
+
+typedef u32 block_t; /*
+ * should not change u32, since it is the on-disk block
+ * address format, __le32.
+ */
+typedef u32 nid_t;
+
+struct f2fs_mount_info {
+ unsigned int opt;
+ int write_io_size_bits; /* Write IO size bits */
+ block_t root_reserved_blocks; /* root reserved blocks */
+ kuid_t s_resuid; /* reserved blocks for uid */
+ kgid_t s_resgid; /* reserved blocks for gid */
+ int active_logs; /* # of active logs */
+ int inline_xattr_size; /* inline xattr size */
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+ struct f2fs_fault_info fault_info; /* For fault injection */
+#endif
+#ifdef CONFIG_QUOTA
+ /* Names of quota files with journalled quota */
+ char *s_qf_names[MAXQUOTAS];
+ int s_jquota_fmt; /* Format of quota to use */
+#endif
+ /* For which write hints are passed down to block layer */
+ int whint_mode;
+ int alloc_mode; /* segment allocation policy */
+ int fsync_mode; /* fsync policy */
+ bool test_dummy_encryption; /* test dummy encryption */
+#ifdef CONFIG_FS_ENCRYPTION
+ bool inlinecrypt; /* inline encryption enabled */
+#endif
+ block_t unusable_cap; /* Amount of space allowed to be
+ * unusable when disabling checkpoint
+ */
+};
+
+#define F2FS_FEATURE_ENCRYPT 0x0001
+#define F2FS_FEATURE_BLKZONED 0x0002
+#define F2FS_FEATURE_ATOMIC_WRITE 0x0004
+#define F2FS_FEATURE_EXTRA_ATTR 0x0008
+#define F2FS_FEATURE_PRJQUOTA 0x0010
+#define F2FS_FEATURE_INODE_CHKSUM 0x0020
+#define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR 0x0040
+#define F2FS_FEATURE_QUOTA_INO 0x0080
+#define F2FS_FEATURE_INODE_CRTIME 0x0100
+#define F2FS_FEATURE_LOST_FOUND 0x0200
+#define F2FS_FEATURE_VERITY 0x0400
+#define F2FS_FEATURE_SB_CHKSUM 0x0800
+#define F2FS_FEATURE_CASEFOLD 0x1000
+
+#define __F2FS_HAS_FEATURE(raw_super, mask) \
+ ((raw_super->feature & cpu_to_le32(mask)) != 0)
+#define F2FS_HAS_FEATURE(sbi, mask) __F2FS_HAS_FEATURE(sbi->raw_super, mask)
+#define F2FS_SET_FEATURE(sbi, mask) \
+ (sbi->raw_super->feature |= cpu_to_le32(mask))
+#define F2FS_CLEAR_FEATURE(sbi, mask) \
+ (sbi->raw_super->feature &= ~cpu_to_le32(mask))
+
+/*
+ * Default values for user and/or group using reserved blocks
+ */
+#define F2FS_DEF_RESUID 0
+#define F2FS_DEF_RESGID 0
+
+/*
+ * For checkpoint manager
+ */
+enum {
+ NAT_BITMAP,
+ SIT_BITMAP
+};
+
+#define CP_UMOUNT 0x00000001
+#define CP_FASTBOOT 0x00000002
+#define CP_SYNC 0x00000004
+#define CP_RECOVERY 0x00000008
+#define CP_DISCARD 0x00000010
+#define CP_TRIMMED 0x00000020
+#define CP_PAUSE 0x00000040
+
+#define MAX_DISCARD_BLOCKS(sbi) BLKS_PER_SEC(sbi)
+#define DEF_MAX_DISCARD_REQUEST 8 /* issue 8 discards per round */
+#define DEF_MIN_DISCARD_ISSUE_TIME 50 /* 50 ms, if exists */
+#define DEF_MID_DISCARD_ISSUE_TIME 500 /* 500 ms, if device busy */
+#define DEF_MAX_DISCARD_ISSUE_TIME 60000 /* 60 s, if no candidates */
+#define DEF_DISCARD_URGENT_UTIL 80 /* do more discard over 80% */
+#define DEF_CP_INTERVAL 60 /* 60 secs */
+#define DEF_IDLE_INTERVAL 5 /* 5 secs */
+#define DEF_DISABLE_INTERVAL 5 /* 5 secs */
+#define DEF_DISABLE_QUICK_INTERVAL 1 /* 1 secs */
+#define DEF_UMOUNT_DISCARD_TIMEOUT 5 /* 5 secs */
+
+struct cp_control {
+ int reason;
+ __u64 trim_start;
+ __u64 trim_end;
+ __u64 trim_minlen;
+};
+
+/*
+ * indicate meta/data type
+ */
+enum {
+ META_CP,
+ META_NAT,
+ META_SIT,
+ META_SSA,
+ META_MAX,
+ META_POR,
+ DATA_GENERIC, /* check range only */
+ DATA_GENERIC_ENHANCE, /* strong check on range and segment bitmap */
+ DATA_GENERIC_ENHANCE_READ, /*
+ * strong check on range and segment
+ * bitmap but no warning due to race
+ * condition of read on truncated area
+ * by extent_cache
+ */
+ META_GENERIC,
+};
+
+/* for the list of ino */
+enum {
+ ORPHAN_INO, /* for orphan ino list */
+ APPEND_INO, /* for append ino list */
+ UPDATE_INO, /* for update ino list */
+ TRANS_DIR_INO, /* for trasactions dir ino list */
+ FLUSH_INO, /* for multiple device flushing */
+ MAX_INO_ENTRY, /* max. list */
+};
+
+struct ino_entry {
+ struct list_head list; /* list head */
+ nid_t ino; /* inode number */
+ unsigned int dirty_device; /* dirty device bitmap */
+};
+
+/* for the list of inodes to be GCed */
+struct inode_entry {
+ struct list_head list; /* list head */
+ struct inode *inode; /* vfs inode pointer */
+};
+
+struct fsync_node_entry {
+ struct list_head list; /* list head */
+ struct page *page; /* warm node page pointer */
+ unsigned int seq_id; /* sequence id */
+};
+
+/* for the bitmap indicate blocks to be discarded */
+struct discard_entry {
+ struct list_head list; /* list head */
+ block_t start_blkaddr; /* start blockaddr of current segment */
+ unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
+};
+
+/* default discard granularity of inner discard thread, unit: block count */
+#define DEFAULT_DISCARD_GRANULARITY 16
+
+/* max discard pend list number */
+#define MAX_PLIST_NUM 512
+#define plist_idx(blk_num) ((blk_num) >= MAX_PLIST_NUM ? \
+ (MAX_PLIST_NUM - 1) : ((blk_num) - 1))
+
+enum {
+ D_PREP, /* initial */
+ D_PARTIAL, /* partially submitted */
+ D_SUBMIT, /* all submitted */
+ D_DONE, /* finished */
+};
+
+struct discard_info {
+ block_t lstart; /* logical start address */
+ block_t len; /* length */
+ block_t start; /* actual start address in dev */
+};
+
+struct discard_cmd {
+ struct rb_node rb_node; /* rb node located in rb-tree */
+ union {
+ struct {
+ block_t lstart; /* logical start address */
+ block_t len; /* length */
+ block_t start; /* actual start address in dev */
+ };
+ struct discard_info di; /* discard info */
+
+ };
+ struct list_head list; /* command list */
+ struct completion wait; /* compleation */
+ struct block_device *bdev; /* bdev */
+ unsigned short ref; /* reference count */
+ unsigned char state; /* state */
+ unsigned char queued; /* queued discard */
+ int error; /* bio error */
+ spinlock_t lock; /* for state/bio_ref updating */
+ unsigned short bio_ref; /* bio reference count */
+};
+
+enum {
+ DPOLICY_BG,
+ DPOLICY_FORCE,
+ DPOLICY_FSTRIM,
+ DPOLICY_UMOUNT,
+ MAX_DPOLICY,
+};
+
+struct discard_policy {
+ int type; /* type of discard */
+ unsigned int min_interval; /* used for candidates exist */
+ unsigned int mid_interval; /* used for device busy */
+ unsigned int max_interval; /* used for candidates not exist */
+ unsigned int max_requests; /* # of discards issued per round */
+ unsigned int io_aware_gran; /* minimum granularity discard not be aware of I/O */
+ bool io_aware; /* issue discard in idle time */
+ bool sync; /* submit discard with REQ_SYNC flag */
+ bool ordered; /* issue discard by lba order */
+ unsigned int granularity; /* discard granularity */
+ int timeout; /* discard timeout for put_super */
+};
+
+struct discard_cmd_control {
+ struct task_struct *f2fs_issue_discard; /* discard thread */
+ struct list_head entry_list; /* 4KB discard entry list */
+ struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
+ struct list_head wait_list; /* store on-flushing entries */
+ struct list_head fstrim_list; /* in-flight discard from fstrim */
+ wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */
+ unsigned int discard_wake; /* to wake up discard thread */
+ struct mutex cmd_lock;
+ unsigned int nr_discards; /* # of discards in the list */
+ unsigned int max_discards; /* max. discards to be issued */
+ unsigned int discard_granularity; /* discard granularity */
+ unsigned int undiscard_blks; /* # of undiscard blocks */
+ unsigned int next_pos; /* next discard position */
+ atomic_t issued_discard; /* # of issued discard */
+ atomic_t queued_discard; /* # of queued discard */
+ atomic_t discard_cmd_cnt; /* # of cached cmd count */
+ struct rb_root_cached root; /* root of discard rb-tree */
+ bool rbtree_check; /* config for consistence check */
+};
+
+/* for the list of fsync inodes, used only during recovery */
+struct fsync_inode_entry {
+ struct list_head list; /* list head */
+ struct inode *inode; /* vfs inode pointer */
+ block_t blkaddr; /* block address locating the last fsync */
+ block_t last_dentry; /* block address locating the last dentry */
+};
+
+#define nats_in_cursum(jnl) (le16_to_cpu((jnl)->n_nats))
+#define sits_in_cursum(jnl) (le16_to_cpu((jnl)->n_sits))
+
+#define nat_in_journal(jnl, i) ((jnl)->nat_j.entries[i].ne)
+#define nid_in_journal(jnl, i) ((jnl)->nat_j.entries[i].nid)
+#define sit_in_journal(jnl, i) ((jnl)->sit_j.entries[i].se)
+#define segno_in_journal(jnl, i) ((jnl)->sit_j.entries[i].segno)
+
+#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
+#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
+
+static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
+{
+ int before = nats_in_cursum(journal);
+
+ journal->n_nats = cpu_to_le16(before + i);
+ return before;
+}
+
+static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
+{
+ int before = sits_in_cursum(journal);
+
+ journal->n_sits = cpu_to_le16(before + i);
+ return before;
+}
+
+static inline bool __has_cursum_space(struct f2fs_journal *journal,
+ int size, int type)
+{
+ if (type == NAT_JOURNAL)
+ return size <= MAX_NAT_JENTRIES(journal);
+ return size <= MAX_SIT_JENTRIES(journal);
+}
+
+/*
+ * ioctl commands
+ */
+#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define F2FS_IOC_GETVERSION FS_IOC_GETVERSION
+
+#define F2FS_IOCTL_MAGIC 0xf5
+#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
+#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
+#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3)
+#define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
+#define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5)
+#define F2FS_IOC_GARBAGE_COLLECT _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
+#define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7)
+#define F2FS_IOC_DEFRAGMENT _IOWR(F2FS_IOCTL_MAGIC, 8, \
+ struct f2fs_defragment)
+#define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \
+ struct f2fs_move_range)
+#define F2FS_IOC_FLUSH_DEVICE _IOW(F2FS_IOCTL_MAGIC, 10, \
+ struct f2fs_flush_device)
+#define F2FS_IOC_GARBAGE_COLLECT_RANGE _IOW(F2FS_IOCTL_MAGIC, 11, \
+ struct f2fs_gc_range)
+#define F2FS_IOC_GET_FEATURES _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
+#define F2FS_IOC_SET_PIN_FILE _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
+#define F2FS_IOC_GET_PIN_FILE _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
+#define F2FS_IOC_PRECACHE_EXTENTS _IO(F2FS_IOCTL_MAGIC, 15)
+#define F2FS_IOC_RESIZE_FS _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
+
+#define F2FS_IOC_GET_VOLUME_NAME FS_IOC_GETFSLABEL
+#define F2FS_IOC_SET_VOLUME_NAME FS_IOC_SETFSLABEL
+
+#define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY
+#define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY
+#define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT
+
+/*
+ * should be same as XFS_IOC_GOINGDOWN.
+ * Flags for going down operation used by FS_IOC_GOINGDOWN
+ */
+#define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
+#define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
+#define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
+#define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */
+#define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */
+#define F2FS_GOING_DOWN_NEED_FSCK 0x4 /* going down to trigger fsck */
+
+#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
+/*
+ * ioctl commands in 32 bit emulation
+ */
+#define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION
+#endif
+
+#define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
+#define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
+
+struct f2fs_gc_range {
+ u32 sync;
+ u64 start;
+ u64 len;
+};
+
+struct f2fs_defragment {
+ u64 start;
+ u64 len;
+};
+
+struct f2fs_move_range {
+ u32 dst_fd; /* destination fd */
+ u64 pos_in; /* start position in src_fd */
+ u64 pos_out; /* start position in dst_fd */
+ u64 len; /* size to move */
+};
+
+struct f2fs_flush_device {
+ u32 dev_num; /* device number to flush */
+ u32 segments; /* # of segments to flush */
+};
+
+/* for inline stuff */
+#define DEF_INLINE_RESERVED_SIZE 1
+static inline int get_extra_isize(struct inode *inode);
+static inline int get_inline_xattr_addrs(struct inode *inode);
+#define MAX_INLINE_DATA(inode) (sizeof(__le32) * \
+ (CUR_ADDRS_PER_INODE(inode) - \
+ get_inline_xattr_addrs(inode) - \
+ DEF_INLINE_RESERVED_SIZE))
+
+/* for inline dir */
+#define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
+ ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
+ BITS_PER_BYTE + 1))
+#define INLINE_DENTRY_BITMAP_SIZE(inode) \
+ DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
+#define INLINE_RESERVED_SIZE(inode) (MAX_INLINE_DATA(inode) - \
+ ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
+ NR_INLINE_DENTRY(inode) + \
+ INLINE_DENTRY_BITMAP_SIZE(inode)))
+
+/*
+ * For INODE and NODE manager
+ */
+/* for directory operations */
+struct f2fs_dentry_ptr {
+ struct inode *inode;
+ void *bitmap;
+ struct f2fs_dir_entry *dentry;
+ __u8 (*filename)[F2FS_SLOT_LEN];
+ int max;
+ int nr_bitmap;
+};
+
+static inline void make_dentry_ptr_block(struct inode *inode,
+ struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
+{
+ d->inode = inode;
+ d->max = NR_DENTRY_IN_BLOCK;
+ d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
+ d->bitmap = t->dentry_bitmap;
+ d->dentry = t->dentry;
+ d->filename = t->filename;
+}
+
+static inline void make_dentry_ptr_inline(struct inode *inode,
+ struct f2fs_dentry_ptr *d, void *t)
+{
+ int entry_cnt = NR_INLINE_DENTRY(inode);
+ int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
+ int reserved_size = INLINE_RESERVED_SIZE(inode);
+
+ d->inode = inode;
+ d->max = entry_cnt;
+ d->nr_bitmap = bitmap_size;
+ d->bitmap = t;
+ d->dentry = t + bitmap_size + reserved_size;
+ d->filename = t + bitmap_size + reserved_size +
+ SIZE_OF_DIR_ENTRY * entry_cnt;
+}
+
+/*
+ * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
+ * as its node offset to distinguish from index node blocks.
+ * But some bits are used to mark the node block.
+ */
+#define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
+ >> OFFSET_BIT_SHIFT)
+enum {
+ ALLOC_NODE, /* allocate a new node page if needed */
+ LOOKUP_NODE, /* look up a node without readahead */
+ LOOKUP_NODE_RA, /*
+ * look up a node with readahead called
+ * by get_data_block.
+ */
+};
+
+#define DEFAULT_RETRY_IO_COUNT 8 /* maximum retry read IO count */
+
+/* maximum retry quota flush count */
+#define DEFAULT_RETRY_QUOTA_FLUSH_COUNT 8
+
+#define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */
+
+#define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */
+
+/* for in-memory extent cache entry */
+#define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */
+
+/* number of extent info in extent cache we try to shrink */
+#define EXTENT_CACHE_SHRINK_NUMBER 128
+
+struct rb_entry {
+ struct rb_node rb_node; /* rb node located in rb-tree */
+ unsigned int ofs; /* start offset of the entry */
+ unsigned int len; /* length of the entry */
+};
+
+struct extent_info {
+ unsigned int fofs; /* start offset in a file */
+ unsigned int len; /* length of the extent */
+ u32 blk; /* start block address of the extent */
+};
+
+struct extent_node {
+ struct rb_node rb_node; /* rb node located in rb-tree */
+ struct extent_info ei; /* extent info */
+ struct list_head list; /* node in global extent list of sbi */
+ struct extent_tree *et; /* extent tree pointer */
+};
+
+struct extent_tree {
+ nid_t ino; /* inode number */
+ struct rb_root_cached root; /* root of extent info rb-tree */
+ struct extent_node *cached_en; /* recently accessed extent node */
+ struct extent_info largest; /* largested extent info */
+ struct list_head list; /* to be used by sbi->zombie_list */
+ rwlock_t lock; /* protect extent info rb-tree */
+ atomic_t node_cnt; /* # of extent node in rb-tree*/
+ bool largest_updated; /* largest extent updated */
+};
+
+/*
+ * This structure is taken from ext4_map_blocks.
+ *
+ * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
+ */
+#define F2FS_MAP_NEW (1 << BH_New)
+#define F2FS_MAP_MAPPED (1 << BH_Mapped)
+#define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten)
+#define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
+ F2FS_MAP_UNWRITTEN)
+
+struct f2fs_map_blocks {
+ block_t m_pblk;
+ block_t m_lblk;
+ unsigned int m_len;
+ unsigned int m_flags;
+ pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */
+ pgoff_t *m_next_extent; /* point to next possible extent */
+ int m_seg_type;
+ bool m_may_create; /* indicate it is from write path */
+};
+
+/* for flag in get_data_block */
+enum {
+ F2FS_GET_BLOCK_DEFAULT,
+ F2FS_GET_BLOCK_FIEMAP,
+ F2FS_GET_BLOCK_BMAP,
+ F2FS_GET_BLOCK_DIO,
+ F2FS_GET_BLOCK_PRE_DIO,
+ F2FS_GET_BLOCK_PRE_AIO,
+ F2FS_GET_BLOCK_PRECACHE,
+};
+
+/*
+ * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
+ */
+#define FADVISE_COLD_BIT 0x01
+#define FADVISE_LOST_PINO_BIT 0x02
+#define FADVISE_ENCRYPT_BIT 0x04
+#define FADVISE_ENC_NAME_BIT 0x08
+#define FADVISE_KEEP_SIZE_BIT 0x10
+#define FADVISE_HOT_BIT 0x20
+#define FADVISE_VERITY_BIT 0x40
+
+#define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT)
+
+#define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT)
+#define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT)
+#define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT)
+#define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT)
+#define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT)
+#define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT)
+#define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT)
+#define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
+#define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
+#define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT)
+#define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
+#define file_keep_isize(inode) is_file(inode, FADVISE_KEEP_SIZE_BIT)
+#define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
+#define file_is_hot(inode) is_file(inode, FADVISE_HOT_BIT)
+#define file_set_hot(inode) set_file(inode, FADVISE_HOT_BIT)
+#define file_clear_hot(inode) clear_file(inode, FADVISE_HOT_BIT)
+#define file_is_verity(inode) is_file(inode, FADVISE_VERITY_BIT)
+#define file_set_verity(inode) set_file(inode, FADVISE_VERITY_BIT)
+
+#define DEF_DIR_LEVEL 0
+
+enum {
+ GC_FAILURE_PIN,
+ GC_FAILURE_ATOMIC,
+ MAX_GC_FAILURE
+};
+
+struct f2fs_inode_info {
+ struct inode vfs_inode; /* serve a vfs inode */
+ unsigned long i_flags; /* keep an inode flags for ioctl */
+ unsigned char i_advise; /* use to give file attribute hints */
+ unsigned char i_dir_level; /* use for dentry level for large dir */
+ unsigned int i_current_depth; /* only for directory depth */
+ /* for gc failure statistic */
+ unsigned int i_gc_failures[MAX_GC_FAILURE];
+ unsigned int i_pino; /* parent inode number */
+ umode_t i_acl_mode; /* keep file acl mode temporarily */
+
+ /* Use below internally in f2fs*/
+ unsigned long flags; /* use to pass per-file flags */
+ struct rw_semaphore i_sem; /* protect fi info */
+ atomic_t dirty_pages; /* # of dirty pages */
+ f2fs_hash_t chash; /* hash value of given file name */
+ unsigned int clevel; /* maximum level of given file name */
+ struct task_struct *task; /* lookup and create consistency */
+ struct task_struct *cp_task; /* separate cp/wb IO stats*/
+ nid_t i_xattr_nid; /* node id that contains xattrs */
+ loff_t last_disk_size; /* lastly written file size */
+
+#ifdef CONFIG_QUOTA
+ struct dquot *i_dquot[MAXQUOTAS];
+
+ /* quota space reservation, managed internally by quota code */
+ qsize_t i_reserved_quota;
+#endif
+ struct list_head dirty_list; /* dirty list for dirs and files */
+ struct list_head gdirty_list; /* linked in global dirty list */
+ struct list_head inmem_ilist; /* list for inmem inodes */
+ struct list_head inmem_pages; /* inmemory pages managed by f2fs */
+ struct task_struct *inmem_task; /* store inmemory task */
+ struct mutex inmem_lock; /* lock for inmemory pages */
+ struct extent_tree *extent_tree; /* cached extent_tree entry */
+
+ /* avoid racing between foreground op and gc */
+ struct rw_semaphore i_gc_rwsem[2];
+ struct rw_semaphore i_mmap_sem;
+ struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
+
+ int i_extra_isize; /* size of extra space located in i_addr */
+ kprojid_t i_projid; /* id for project quota */
+ int i_inline_xattr_size; /* inline xattr size */
+ struct timespec64 i_crtime; /* inode creation time */
+ struct timespec64 i_disk_time[4];/* inode disk times */
+};
+
+static inline void get_extent_info(struct extent_info *ext,
+ struct f2fs_extent *i_ext)
+{
+ ext->fofs = le32_to_cpu(i_ext->fofs);
+ ext->blk = le32_to_cpu(i_ext->blk);
+ ext->len = le32_to_cpu(i_ext->len);
+}
+
+static inline void set_raw_extent(struct extent_info *ext,
+ struct f2fs_extent *i_ext)
+{
+ i_ext->fofs = cpu_to_le32(ext->fofs);
+ i_ext->blk = cpu_to_le32(ext->blk);
+ i_ext->len = cpu_to_le32(ext->len);
+}
+
+static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
+ u32 blk, unsigned int len)
+{
+ ei->fofs = fofs;
+ ei->blk = blk;
+ ei->len = len;
+}
+
+static inline bool __is_discard_mergeable(struct discard_info *back,
+ struct discard_info *front, unsigned int max_len)
+{
+ return (back->lstart + back->len == front->lstart) &&
+ (back->len + front->len <= max_len);
+}
+
+static inline bool __is_discard_back_mergeable(struct discard_info *cur,
+ struct discard_info *back, unsigned int max_len)
+{
+ return __is_discard_mergeable(back, cur, max_len);
+}
+
+static inline bool __is_discard_front_mergeable(struct discard_info *cur,
+ struct discard_info *front, unsigned int max_len)
+{
+ return __is_discard_mergeable(cur, front, max_len);
+}
+
+static inline bool __is_extent_mergeable(struct extent_info *back,
+ struct extent_info *front)
+{
+ return (back->fofs + back->len == front->fofs &&
+ back->blk + back->len == front->blk);
+}
+
+static inline bool __is_back_mergeable(struct extent_info *cur,
+ struct extent_info *back)
+{
+ return __is_extent_mergeable(back, cur);
+}
+
+static inline bool __is_front_mergeable(struct extent_info *cur,
+ struct extent_info *front)
+{
+ return __is_extent_mergeable(cur, front);
+}
+
+extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
+static inline void __try_update_largest_extent(struct extent_tree *et,
+ struct extent_node *en)
+{
+ if (en->ei.len > et->largest.len) {
+ et->largest = en->ei;
+ et->largest_updated = true;
+ }
+}
+
+/*
+ * For free nid management
+ */
+enum nid_state {
+ FREE_NID, /* newly added to free nid list */
+ PREALLOC_NID, /* it is preallocated */
+ MAX_NID_STATE,
+};
+
+struct f2fs_nm_info {
+ block_t nat_blkaddr; /* base disk address of NAT */
+ nid_t max_nid; /* maximum possible node ids */
+ nid_t available_nids; /* # of available node ids */
+ nid_t next_scan_nid; /* the next nid to be scanned */
+ unsigned int ram_thresh; /* control the memory footprint */
+ unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */
+ unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */
+
+ /* NAT cache management */
+ struct radix_tree_root nat_root;/* root of the nat entry cache */
+ struct radix_tree_root nat_set_root;/* root of the nat set cache */
+ struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */
+ struct list_head nat_entries; /* cached nat entry list (clean) */
+ spinlock_t nat_list_lock; /* protect clean nat entry list */
+ unsigned int nat_cnt; /* the # of cached nat entries */
+ unsigned int dirty_nat_cnt; /* total num of nat entries in set */
+ unsigned int nat_blocks; /* # of nat blocks */
+
+ /* free node ids management */
+ struct radix_tree_root free_nid_root;/* root of the free_nid cache */
+ struct list_head free_nid_list; /* list for free nids excluding preallocated nids */
+ unsigned int nid_cnt[MAX_NID_STATE]; /* the number of free node id */
+ spinlock_t nid_list_lock; /* protect nid lists ops */
+ struct mutex build_lock; /* lock for build free nids */
+ unsigned char **free_nid_bitmap;
+ unsigned char *nat_block_bitmap;
+ unsigned short *free_nid_count; /* free nid count of NAT block */
+
+ /* for checkpoint */
+ char *nat_bitmap; /* NAT bitmap pointer */
+
+ unsigned int nat_bits_blocks; /* # of nat bits blocks */
+ unsigned char *nat_bits; /* NAT bits blocks */
+ unsigned char *full_nat_bits; /* full NAT pages */
+ unsigned char *empty_nat_bits; /* empty NAT pages */
+#ifdef CONFIG_F2FS_CHECK_FS
+ char *nat_bitmap_mir; /* NAT bitmap mirror */
+#endif
+ int bitmap_size; /* bitmap size */
+};
+
+/*
+ * this structure is used as one of function parameters.
+ * all the information are dedicated to a given direct node block determined
+ * by the data offset in a file.
+ */
+struct dnode_of_data {
+ struct inode *inode; /* vfs inode pointer */
+ struct page *inode_page; /* its inode page, NULL is possible */
+ struct page *node_page; /* cached direct node page */
+ nid_t nid; /* node id of the direct node block */
+ unsigned int ofs_in_node; /* data offset in the node page */
+ bool inode_page_locked; /* inode page is locked or not */
+ bool node_changed; /* is node block changed */
+ char cur_level; /* level of hole node page */
+ char max_level; /* level of current page located */
+ block_t data_blkaddr; /* block address of the node block */
+};
+
+static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
+ struct page *ipage, struct page *npage, nid_t nid)
+{
+ memset(dn, 0, sizeof(*dn));
+ dn->inode = inode;
+ dn->inode_page = ipage;
+ dn->node_page = npage;
+ dn->nid = nid;
+}
+
+/*
+ * For SIT manager
+ *
+ * By default, there are 6 active log areas across the whole main area.
+ * When considering hot and cold data separation to reduce cleaning overhead,
+ * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
+ * respectively.
+ * In the current design, you should not change the numbers intentionally.
+ * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
+ * logs individually according to the underlying devices. (default: 6)
+ * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
+ * data and 8 for node logs.
+ */
+#define NR_CURSEG_DATA_TYPE (3)
+#define NR_CURSEG_NODE_TYPE (3)
+#define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
+
+enum {
+ CURSEG_HOT_DATA = 0, /* directory entry blocks */
+ CURSEG_WARM_DATA, /* data blocks */
+ CURSEG_COLD_DATA, /* multimedia or GCed data blocks */
+ CURSEG_HOT_NODE, /* direct node blocks of directory files */
+ CURSEG_WARM_NODE, /* direct node blocks of normal files */
+ CURSEG_COLD_NODE, /* indirect node blocks */
+ NO_CHECK_TYPE,
+ CURSEG_COLD_DATA_PINNED,/* cold data for pinned file */
+};
+
+struct flush_cmd {
+ struct completion wait;
+ struct llist_node llnode;
+ nid_t ino;
+ int ret;
+};
+
+struct flush_cmd_control {
+ struct task_struct *f2fs_issue_flush; /* flush thread */
+ wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */
+ atomic_t issued_flush; /* # of issued flushes */
+ atomic_t queued_flush; /* # of queued flushes */
+ struct llist_head issue_list; /* list for command issue */
+ struct llist_node *dispatch_list; /* list for command dispatch */
+};
+
+struct f2fs_sm_info {
+ struct sit_info *sit_info; /* whole segment information */
+ struct free_segmap_info *free_info; /* free segment information */
+ struct dirty_seglist_info *dirty_info; /* dirty segment information */
+ struct curseg_info *curseg_array; /* active segment information */
+
+ struct rw_semaphore curseg_lock; /* for preventing curseg change */
+
+ block_t seg0_blkaddr; /* block address of 0'th segment */
+ block_t main_blkaddr; /* start block address of main area */
+ block_t ssa_blkaddr; /* start block address of SSA area */
+
+ unsigned int segment_count; /* total # of segments */
+ unsigned int main_segments; /* # of segments in main area */
+ unsigned int reserved_segments; /* # of reserved segments */
+ unsigned int ovp_segments; /* # of overprovision segments */
+
+ /* a threshold to reclaim prefree segments */
+ unsigned int rec_prefree_segments;
+
+ /* for batched trimming */
+ unsigned int trim_sections; /* # of sections to trim */
+
+ struct list_head sit_entry_set; /* sit entry set list */
+
+ unsigned int ipu_policy; /* in-place-update policy */
+ unsigned int min_ipu_util; /* in-place-update threshold */
+ unsigned int min_fsync_blocks; /* threshold for fsync */
+ unsigned int min_seq_blocks; /* threshold for sequential blocks */
+ unsigned int min_hot_blocks; /* threshold for hot block allocation */
+ unsigned int min_ssr_sections; /* threshold to trigger SSR allocation */
+
+ /* for flush command control */
+ struct flush_cmd_control *fcc_info;
+
+ /* for discard command control */
+ struct discard_cmd_control *dcc_info;
+};
+
+/*
+ * For superblock
+ */
+/*
+ * COUNT_TYPE for monitoring
+ *
+ * f2fs monitors the number of several block types such as on-writeback,
+ * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
+ */
+#define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
+enum count_type {
+ F2FS_DIRTY_DENTS,
+ F2FS_DIRTY_DATA,
+ F2FS_DIRTY_QDATA,
+ F2FS_DIRTY_NODES,
+ F2FS_DIRTY_META,
+ F2FS_INMEM_PAGES,
+ F2FS_DIRTY_IMETA,
+ F2FS_WB_CP_DATA,
+ F2FS_WB_DATA,
+ F2FS_RD_DATA,
+ F2FS_RD_NODE,
+ F2FS_RD_META,
+ F2FS_DIO_WRITE,
+ F2FS_DIO_READ,
+ NR_COUNT_TYPE,
+};
+
+/*
+ * The below are the page types of bios used in submit_bio().
+ * The available types are:
+ * DATA User data pages. It operates as async mode.
+ * NODE Node pages. It operates as async mode.
+ * META FS metadata pages such as SIT, NAT, CP.
+ * NR_PAGE_TYPE The number of page types.
+ * META_FLUSH Make sure the previous pages are written
+ * with waiting the bio's completion
+ * ... Only can be used with META.
+ */
+#define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type))
+enum page_type {
+ DATA,
+ NODE,
+ META,
+ NR_PAGE_TYPE,
+ META_FLUSH,
+ INMEM, /* the below types are used by tracepoints only. */
+ INMEM_DROP,
+ INMEM_INVALIDATE,
+ INMEM_REVOKE,
+ IPU,
+ OPU,
+};
+
+enum temp_type {
+ HOT = 0, /* must be zero for meta bio */
+ WARM,
+ COLD,
+ NR_TEMP_TYPE,
+};
+
+enum need_lock_type {
+ LOCK_REQ = 0,
+ LOCK_DONE,
+ LOCK_RETRY,
+};
+
+enum cp_reason_type {
+ CP_NO_NEEDED,
+ CP_NON_REGULAR,
+ CP_HARDLINK,
+ CP_SB_NEED_CP,
+ CP_WRONG_PINO,
+ CP_NO_SPC_ROLL,
+ CP_NODE_NEED_CP,
+ CP_FASTBOOT_MODE,
+ CP_SPEC_LOG_NUM,
+ CP_RECOVER_DIR,
+};
+
+enum iostat_type {
+ APP_DIRECT_IO, /* app direct IOs */
+ APP_BUFFERED_IO, /* app buffered IOs */
+ APP_WRITE_IO, /* app write IOs */
+ APP_MAPPED_IO, /* app mapped IOs */
+ FS_DATA_IO, /* data IOs from kworker/fsync/reclaimer */
+ FS_NODE_IO, /* node IOs from kworker/fsync/reclaimer */
+ FS_META_IO, /* meta IOs from kworker/reclaimer */
+ FS_GC_DATA_IO, /* data IOs from forground gc */
+ FS_GC_NODE_IO, /* node IOs from forground gc */
+ FS_CP_DATA_IO, /* data IOs from checkpoint */
+ FS_CP_NODE_IO, /* node IOs from checkpoint */
+ FS_CP_META_IO, /* meta IOs from checkpoint */
+ FS_DISCARD, /* discard */
+ NR_IO_TYPE,
+};
+
+struct f2fs_io_info {
+ struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
+ nid_t ino; /* inode number */
+ enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
+ enum temp_type temp; /* contains HOT/WARM/COLD */
+ int op; /* contains REQ_OP_ */
+ int op_flags; /* req_flag_bits */
+ block_t new_blkaddr; /* new block address to be written */
+ block_t old_blkaddr; /* old block address before Cow */
+ struct page *page; /* page to be written */
+ struct page *encrypted_page; /* encrypted page */
+ struct list_head list; /* serialize IOs */
+ bool submitted; /* indicate IO submission */
+ int need_lock; /* indicate we need to lock cp_rwsem */
+ bool in_list; /* indicate fio is in io_list */
+ bool is_por; /* indicate IO is from recovery or not */
+ bool retry; /* need to reallocate block address */
+ enum iostat_type io_type; /* io type */
+ struct writeback_control *io_wbc; /* writeback control */
+ struct bio **bio; /* bio for ipu */
+ sector_t *last_block; /* last block number in bio */
+ unsigned char version; /* version of the node */
+};
+
+struct bio_entry {
+ struct bio *bio;
+ struct list_head list;
+};
+
+#define is_read_io(rw) ((rw) == READ)
+struct f2fs_bio_info {
+ struct f2fs_sb_info *sbi; /* f2fs superblock */
+ struct bio *bio; /* bios to merge */
+ sector_t last_block_in_bio; /* last block number */
+ struct f2fs_io_info fio; /* store buffered io info. */
+ struct rw_semaphore io_rwsem; /* blocking op for bio */
+ spinlock_t io_lock; /* serialize DATA/NODE IOs */
+ struct list_head io_list; /* track fios */
+ struct list_head bio_list; /* bio entry list head */
+ struct rw_semaphore bio_list_lock; /* lock to protect bio entry list */
+};
+
+#define FDEV(i) (sbi->devs[i])
+#define RDEV(i) (raw_super->devs[i])
+struct f2fs_dev_info {
+ struct block_device *bdev;
+ char path[MAX_PATH_LEN];
+ unsigned int total_segments;
+ block_t start_blk;
+ block_t end_blk;
+#ifdef CONFIG_BLK_DEV_ZONED
+ unsigned int nr_blkz; /* Total number of zones */
+ unsigned long *blkz_seq; /* Bitmap indicating sequential zones */
+#endif
+};
+
+enum inode_type {
+ DIR_INODE, /* for dirty dir inode */
+ FILE_INODE, /* for dirty regular/symlink inode */
+ DIRTY_META, /* for all dirtied inode metadata */
+ ATOMIC_FILE, /* for all atomic files */
+ NR_INODE_TYPE,
+};
+
+/* for inner inode cache management */
+struct inode_management {
+ struct radix_tree_root ino_root; /* ino entry array */
+ spinlock_t ino_lock; /* for ino entry lock */
+ struct list_head ino_list; /* inode list head */
+ unsigned long ino_num; /* number of entries */
+};
+
+/* For s_flag in struct f2fs_sb_info */
+enum {
+ SBI_IS_DIRTY, /* dirty flag for checkpoint */
+ SBI_IS_CLOSE, /* specify unmounting */
+ SBI_NEED_FSCK, /* need fsck.f2fs to fix */
+ SBI_POR_DOING, /* recovery is doing or not */
+ SBI_NEED_SB_WRITE, /* need to recover superblock */
+ SBI_NEED_CP, /* need to checkpoint */
+ SBI_IS_SHUTDOWN, /* shutdown by ioctl */
+ SBI_IS_RECOVERED, /* recovered orphan/data */
+ SBI_CP_DISABLED, /* CP was disabled last mount */
+ SBI_CP_DISABLED_QUICK, /* CP was disabled quickly */
+ SBI_QUOTA_NEED_FLUSH, /* need to flush quota info in CP */
+ SBI_QUOTA_SKIP_FLUSH, /* skip flushing quota in current CP */
+ SBI_QUOTA_NEED_REPAIR, /* quota file may be corrupted */
+ SBI_IS_RESIZEFS, /* resizefs is in process */
+};
+
+enum {
+ CP_TIME,
+ REQ_TIME,
+ DISCARD_TIME,
+ GC_TIME,
+ DISABLE_TIME,
+ UMOUNT_DISCARD_TIMEOUT,
+ MAX_TIME,
+};
+
+enum {
+ GC_NORMAL,
+ GC_IDLE_CB,
+ GC_IDLE_GREEDY,
+ GC_URGENT,
+};
+
+enum {
+ WHINT_MODE_OFF, /* not pass down write hints */
+ WHINT_MODE_USER, /* try to pass down hints given by users */
+ WHINT_MODE_FS, /* pass down hints with F2FS policy */
+};
+
+enum {
+ ALLOC_MODE_DEFAULT, /* stay default */
+ ALLOC_MODE_REUSE, /* reuse segments as much as possible */
+};
+
+enum fsync_mode {
+ FSYNC_MODE_POSIX, /* fsync follows posix semantics */
+ FSYNC_MODE_STRICT, /* fsync behaves in line with ext4 */
+ FSYNC_MODE_NOBARRIER, /* fsync behaves nobarrier based on posix */
+};
+
+#ifdef CONFIG_FS_ENCRYPTION
+#define DUMMY_ENCRYPTION_ENABLED(sbi) \
+ (unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
+#else
+#define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
+#endif
+
+struct f2fs_sb_info {
+ struct super_block *sb; /* pointer to VFS super block */
+ struct proc_dir_entry *s_proc; /* proc entry */
+ struct f2fs_super_block *raw_super; /* raw super block pointer */
+ struct rw_semaphore sb_lock; /* lock for raw super block */
+ int valid_super_block; /* valid super block no */
+ unsigned long s_flag; /* flags for sbi */
+ struct mutex writepages; /* mutex for writepages() */
+#ifdef CONFIG_UNICODE
+ struct unicode_map *s_encoding;
+ __u16 s_encoding_flags;
+#endif
+
+#ifdef CONFIG_BLK_DEV_ZONED
+ unsigned int blocks_per_blkz; /* F2FS blocks per zone */
+ unsigned int log_blocks_per_blkz; /* log2 F2FS blocks per zone */
+#endif
+
+ /* for node-related operations */
+ struct f2fs_nm_info *nm_info; /* node manager */
+ struct inode *node_inode; /* cache node blocks */
+
+ /* for segment-related operations */
+ struct f2fs_sm_info *sm_info; /* segment manager */
+
+ /* for bio operations */
+ struct f2fs_bio_info *write_io[NR_PAGE_TYPE]; /* for write bios */
+ /* keep migration IO order for LFS mode */
+ struct rw_semaphore io_order_lock;
+ mempool_t *write_io_dummy; /* Dummy pages */
+
+ /* for checkpoint */
+ struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */
+ int cur_cp_pack; /* remain current cp pack */
+ spinlock_t cp_lock; /* for flag in ckpt */
+ struct inode *meta_inode; /* cache meta blocks */
+ struct mutex cp_mutex; /* checkpoint procedure lock */
+ struct rw_semaphore cp_rwsem; /* blocking FS operations */
+ struct rw_semaphore node_write; /* locking node writes */
+ struct rw_semaphore node_change; /* locking node change */
+ wait_queue_head_t cp_wait;
+ unsigned long last_time[MAX_TIME]; /* to store time in jiffies */
+ long interval_time[MAX_TIME]; /* to store thresholds */
+
+ struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */
+
+ spinlock_t fsync_node_lock; /* for node entry lock */
+ struct list_head fsync_node_list; /* node list head */
+ unsigned int fsync_seg_id; /* sequence id */
+ unsigned int fsync_node_num; /* number of node entries */
+
+ /* for orphan inode, use 0'th array */
+ unsigned int max_orphans; /* max orphan inodes */
+
+ /* for inode management */
+ struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */
+ spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */
+ struct mutex flush_lock; /* for flush exclusion */
+
+ /* for extent tree cache */
+ struct radix_tree_root extent_tree_root;/* cache extent cache entries */
+ struct mutex extent_tree_lock; /* locking extent radix tree */
+ struct list_head extent_list; /* lru list for shrinker */
+ spinlock_t extent_lock; /* locking extent lru list */
+ atomic_t total_ext_tree; /* extent tree count */
+ struct list_head zombie_list; /* extent zombie tree list */
+ atomic_t total_zombie_tree; /* extent zombie tree count */
+ atomic_t total_ext_node; /* extent info count */
+
+ /* basic filesystem units */
+ unsigned int log_sectors_per_block; /* log2 sectors per block */
+ unsigned int log_blocksize; /* log2 block size */
+ unsigned int blocksize; /* block size */
+ unsigned int root_ino_num; /* root inode number*/
+ unsigned int node_ino_num; /* node inode number*/
+ unsigned int meta_ino_num; /* meta inode number*/
+ unsigned int log_blocks_per_seg; /* log2 blocks per segment */
+ unsigned int blocks_per_seg; /* blocks per segment */
+ unsigned int segs_per_sec; /* segments per section */
+ unsigned int secs_per_zone; /* sections per zone */
+ unsigned int total_sections; /* total section count */
+ struct mutex resize_mutex; /* for resize exclusion */
+ unsigned int total_node_count; /* total node block count */
+ unsigned int total_valid_node_count; /* valid node block count */
+ loff_t max_file_blocks; /* max block index of file */
+ int dir_level; /* directory level */
+ int readdir_ra; /* readahead inode in readdir */
+
+ block_t user_block_count; /* # of user blocks */
+ block_t total_valid_block_count; /* # of valid blocks */
+ block_t discard_blks; /* discard command candidats */
+ block_t last_valid_block_count; /* for recovery */
+ block_t reserved_blocks; /* configurable reserved blocks */
+ block_t current_reserved_blocks; /* current reserved blocks */
+
+ /* Additional tracking for no checkpoint mode */
+ block_t unusable_block_count; /* # of blocks saved by last cp */
+
+ unsigned int nquota_files; /* # of quota sysfile */
+ struct rw_semaphore quota_sem; /* blocking cp for flags */
+
+ /* # of pages, see count_type */
+ atomic_t nr_pages[NR_COUNT_TYPE];
+ /* # of allocated blocks */
+ struct percpu_counter alloc_valid_block_count;
+
+ /* writeback control */
+ atomic_t wb_sync_req[META]; /* count # of WB_SYNC threads */
+
+ /* valid inode count */
+ struct percpu_counter total_valid_inode_count;
+
+ struct f2fs_mount_info mount_opt; /* mount options */
+
+ /* for cleaning operations */
+ struct mutex gc_mutex; /* mutex for GC */
+ struct f2fs_gc_kthread *gc_thread; /* GC thread */
+ unsigned int cur_victim_sec; /* current victim section num */
+ unsigned int gc_mode; /* current GC state */
+ unsigned int next_victim_seg[2]; /* next segment in victim section */
+ /* for skip statistic */
+ unsigned int atomic_files; /* # of opened atomic file */
+ unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */
+ unsigned long long skipped_gc_rwsem; /* FG_GC only */
+
+ /* threshold for gc trials on pinned files */
+ u64 gc_pin_file_threshold;
+ struct rw_semaphore pin_sem;
+
+ /* maximum # of trials to find a victim segment for SSR and GC */
+ unsigned int max_victim_search;
+ /* migration granularity of garbage collection, unit: segment */
+ unsigned int migration_granularity;
+
+ /*
+ * for stat information.
+ * one is for the LFS mode, and the other is for the SSR mode.
+ */
+#ifdef CONFIG_F2FS_STAT_FS
+ struct f2fs_stat_info *stat_info; /* FS status information */
+ atomic_t meta_count[META_MAX]; /* # of meta blocks */
+ unsigned int segment_count[2]; /* # of allocated segments */
+ unsigned int block_count[2]; /* # of allocated blocks */
+ atomic_t inplace_count; /* # of inplace update */
+ atomic64_t total_hit_ext; /* # of lookup extent cache */
+ atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */
+ atomic64_t read_hit_largest; /* # of hit largest extent node */
+ atomic64_t read_hit_cached; /* # of hit cached extent node */
+ atomic_t inline_xattr; /* # of inline_xattr inodes */
+ atomic_t inline_inode; /* # of inline_data inodes */
+ atomic_t inline_dir; /* # of inline_dentry inodes */
+ atomic_t aw_cnt; /* # of atomic writes */
+ atomic_t vw_cnt; /* # of volatile writes */
+ atomic_t max_aw_cnt; /* max # of atomic writes */
+ atomic_t max_vw_cnt; /* max # of volatile writes */
+ int bg_gc; /* background gc calls */
+ unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
+ unsigned int other_skip_bggc; /* skip background gc for other reasons */
+ unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
+#endif
+ spinlock_t stat_lock; /* lock for stat operations */
+
+ /* For app/fs IO statistics */
+ spinlock_t iostat_lock;
+ unsigned long long write_iostat[NR_IO_TYPE];
+ bool iostat_enable;
+
+ /* For sysfs suppport */
+ struct kobject s_kobj;
+ struct completion s_kobj_unregister;
+
+ /* For shrinker support */
+ struct list_head s_list;
+ int s_ndevs; /* number of devices */
+ struct f2fs_dev_info *devs; /* for device list */
+ unsigned int dirty_device; /* for checkpoint data flush */
+ spinlock_t dev_lock; /* protect dirty_device */
+ struct mutex umount_mutex;
+ unsigned int shrinker_run_no;
+
+ /* For write statistics */
+ u64 sectors_written_start;
+ u64 kbytes_written;
+
+ /* Reference to checksum algorithm driver via cryptoapi */
+ struct crypto_shash *s_chksum_driver;
+
+ /* Precomputed FS UUID checksum for seeding other checksums */
+ __u32 s_chksum_seed;
+};
+
+struct f2fs_private_dio {
+ struct inode *inode;
+ void *orig_private;
+ bio_end_io_t *orig_end_io;
+ bool write;
+};
+
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+#define f2fs_show_injection_info(sbi, type) \
+ printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \
+ KERN_INFO, sbi->sb->s_id, \
+ f2fs_fault_name[type], \
+ __func__, __builtin_return_address(0))
+static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
+{
+ struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
+
+ if (!ffi->inject_rate)
+ return false;
+
+ if (!IS_FAULT_SET(ffi, type))
+ return false;
+
+ atomic_inc(&ffi->inject_ops);
+ if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
+ atomic_set(&ffi->inject_ops, 0);
+ return true;
+ }
+ return false;
+}
+#else
+#define f2fs_show_injection_info(sbi, type) do { } while (0)
+static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
+{
+ return false;
+}
+#endif
+
+/*
+ * Test if the mounted volume is a multi-device volume.
+ * - For a single regular disk volume, sbi->s_ndevs is 0.
+ * - For a single zoned disk volume, sbi->s_ndevs is 1.
+ * - For a multi-device volume, sbi->s_ndevs is always 2 or more.
+ */
+static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
+{
+ return sbi->s_ndevs > 1;
+}
+
+/* For write statistics. Suppose sector size is 512 bytes,
+ * and the return value is in kbytes. s is of struct f2fs_sb_info.
+ */
+#define BD_PART_WRITTEN(s) \
+(((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) - \
+ (s)->sectors_written_start) >> 1)
+
+static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
+{
+ unsigned long now = jiffies;
+
+ sbi->last_time[type] = now;
+
+ /* DISCARD_TIME and GC_TIME are based on REQ_TIME */
+ if (type == REQ_TIME) {
+ sbi->last_time[DISCARD_TIME] = now;
+ sbi->last_time[GC_TIME] = now;
+ }
+}
+
+static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
+{
+ unsigned long interval = sbi->interval_time[type] * HZ;
+
+ return time_after(jiffies, sbi->last_time[type] + interval);
+}
+
+static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
+ int type)
+{
+ unsigned long interval = sbi->interval_time[type] * HZ;
+ unsigned int wait_ms = 0;
+ long delta;
+
+ delta = (sbi->last_time[type] + interval) - jiffies;
+ if (delta > 0)
+ wait_ms = jiffies_to_msecs(delta);
+
+ return wait_ms;
+}
+
+/*
+ * Inline functions
+ */
+static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
+ const void *address, unsigned int length)
+{
+ struct {
+ struct shash_desc shash;
+ char ctx[4];
+ } desc;
+ int err;
+
+ BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
+
+ desc.shash.tfm = sbi->s_chksum_driver;
+ desc.shash.flags = 0;
+ *(u32 *)desc.ctx = crc;
+
+ err = crypto_shash_update(&desc.shash, address, length);
+ BUG_ON(err);
+
+ return *(u32 *)desc.ctx;
+}
+
+static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
+ unsigned int length)
+{
+ return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
+}
+
+static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
+ void *buf, size_t buf_size)
+{
+ return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
+}
+
+static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
+ const void *address, unsigned int length)
+{
+ return __f2fs_crc32(sbi, crc, address, length);
+}
+
+static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
+{
+ return container_of(inode, struct f2fs_inode_info, vfs_inode);
+}
+
+static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
+{
+ return F2FS_SB(inode->i_sb);
+}
+
+static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
+{
+ return F2FS_I_SB(mapping->host);
+}
+
+static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
+{
+ return F2FS_M_SB(page_file_mapping(page));
+}
+
+static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
+{
+ return (struct f2fs_super_block *)(sbi->raw_super);
+}
+
+static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
+{
+ return (struct f2fs_checkpoint *)(sbi->ckpt);
+}
+
+static inline struct f2fs_node *F2FS_NODE(struct page *page)
+{
+ return (struct f2fs_node *)page_address(page);
+}
+
+static inline struct f2fs_inode *F2FS_INODE(struct page *page)
+{
+ return &((struct f2fs_node *)page_address(page))->i;
+}
+
+static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
+{
+ return (struct f2fs_nm_info *)(sbi->nm_info);
+}
+
+static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
+{
+ return (struct f2fs_sm_info *)(sbi->sm_info);
+}
+
+static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
+{
+ return (struct sit_info *)(SM_I(sbi)->sit_info);
+}
+
+static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
+{
+ return (struct free_segmap_info *)(SM_I(sbi)->free_info);
+}
+
+static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
+{
+ return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
+}
+
+static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
+{
+ return sbi->meta_inode->i_mapping;
+}
+
+static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
+{
+ return sbi->node_inode->i_mapping;
+}
+
+static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
+{
+ return test_bit(type, &sbi->s_flag);
+}
+
+static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
+{
+ set_bit(type, &sbi->s_flag);
+}
+
+static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
+{
+ clear_bit(type, &sbi->s_flag);
+}
+
+static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
+{
+ return le64_to_cpu(cp->checkpoint_ver);
+}
+
+static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
+{
+ if (type < F2FS_MAX_QUOTAS)
+ return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
+ return 0;
+}
+
+static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
+{
+ size_t crc_offset = le32_to_cpu(cp->checksum_offset);
+ return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
+}
+
+static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
+{
+ unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
+
+ return ckpt_flags & f;
+}
+
+static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
+{
+ return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
+}
+
+static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
+{
+ unsigned int ckpt_flags;
+
+ ckpt_flags = le32_to_cpu(cp->ckpt_flags);
+ ckpt_flags |= f;
+ cp->ckpt_flags = cpu_to_le32(ckpt_flags);
+}
+
+static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&sbi->cp_lock, flags);
+ __set_ckpt_flags(F2FS_CKPT(sbi), f);
+ spin_unlock_irqrestore(&sbi->cp_lock, flags);
+}
+
+static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
+{
+ unsigned int ckpt_flags;
+
+ ckpt_flags = le32_to_cpu(cp->ckpt_flags);
+ ckpt_flags &= (~f);
+ cp->ckpt_flags = cpu_to_le32(ckpt_flags);
+}
+
+static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&sbi->cp_lock, flags);
+ __clear_ckpt_flags(F2FS_CKPT(sbi), f);
+ spin_unlock_irqrestore(&sbi->cp_lock, flags);
+}
+
+static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
+{
+ unsigned long flags;
+ unsigned char *nat_bits;
+
+ /*
+ * In order to re-enable nat_bits we need to call fsck.f2fs by
+ * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
+ * so let's rely on regular fsck or unclean shutdown.
+ */
+
+ if (lock)
+ spin_lock_irqsave(&sbi->cp_lock, flags);
+ __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
+ nat_bits = NM_I(sbi)->nat_bits;
+ NM_I(sbi)->nat_bits = NULL;
+ if (lock)
+ spin_unlock_irqrestore(&sbi->cp_lock, flags);
+
+ kvfree(nat_bits);
+}
+
+static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
+ struct cp_control *cpc)
+{
+ bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
+
+ return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
+}
+
+static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
+{
+ down_read(&sbi->cp_rwsem);
+}
+
+static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
+{
+ return down_read_trylock(&sbi->cp_rwsem);
+}
+
+static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
+{
+ up_read(&sbi->cp_rwsem);
+}
+
+static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
+{
+ down_write(&sbi->cp_rwsem);
+}
+
+static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
+{
+ up_write(&sbi->cp_rwsem);
+}
+
+static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
+{
+ int reason = CP_SYNC;
+
+ if (test_opt(sbi, FASTBOOT))
+ reason = CP_FASTBOOT;
+ if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
+ reason = CP_UMOUNT;
+ return reason;
+}
+
+static inline bool __remain_node_summaries(int reason)
+{
+ return (reason & (CP_UMOUNT | CP_FASTBOOT));
+}
+
+static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
+{
+ return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
+ is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
+}
+
+/*
+ * Check whether the inode has blocks or not
+ */
+static inline int F2FS_HAS_BLOCKS(struct inode *inode)
+{
+ block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
+
+ return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
+}
+
+static inline bool f2fs_has_xattr_block(unsigned int ofs)
+{
+ return ofs == XATTR_NODE_OFFSET;
+}
+
+static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
+ struct inode *inode, bool cap)
+{
+ if (!inode)
+ return true;
+ if (!test_opt(sbi, RESERVE_ROOT))
+ return false;
+ if (IS_NOQUOTA(inode))
+ return true;
+ if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
+ return true;
+ if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
+ in_group_p(F2FS_OPTION(sbi).s_resgid))
+ return true;
+ if (cap && capable(CAP_SYS_RESOURCE))
+ return true;
+ return false;
+}
+
+static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
+static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
+ struct inode *inode, blkcnt_t *count)
+{
+ blkcnt_t diff = 0, release = 0;
+ block_t avail_user_block_count;
+ int ret;
+
+ ret = dquot_reserve_block(inode, *count);
+ if (ret)
+ return ret;
+
+ if (time_to_inject(sbi, FAULT_BLOCK)) {
+ f2fs_show_injection_info(sbi, FAULT_BLOCK);
+ release = *count;
+ goto release_quota;
+ }
+
+ /*
+ * let's increase this in prior to actual block count change in order
+ * for f2fs_sync_file to avoid data races when deciding checkpoint.
+ */
+ percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
+
+ spin_lock(&sbi->stat_lock);
+ sbi->total_valid_block_count += (block_t)(*count);
+ avail_user_block_count = sbi->user_block_count -
+ sbi->current_reserved_blocks;
+
+ if (!__allow_reserved_blocks(sbi, inode, true))
+ avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
+ if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
+ if (avail_user_block_count > sbi->unusable_block_count)
+ avail_user_block_count -= sbi->unusable_block_count;
+ else
+ avail_user_block_count = 0;
+ }
+ if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
+ diff = sbi->total_valid_block_count - avail_user_block_count;
+ if (diff > *count)
+ diff = *count;
+ *count -= diff;
+ release = diff;
+ sbi->total_valid_block_count -= diff;
+ if (!*count) {
+ spin_unlock(&sbi->stat_lock);
+ goto enospc;
+ }
+ }
+ spin_unlock(&sbi->stat_lock);
+
+ if (unlikely(release)) {
+ percpu_counter_sub(&sbi->alloc_valid_block_count, release);
+ dquot_release_reservation_block(inode, release);
+ }
+ f2fs_i_blocks_write(inode, *count, true, true);
+ return 0;
+
+enospc:
+ percpu_counter_sub(&sbi->alloc_valid_block_count, release);
+release_quota:
+ dquot_release_reservation_block(inode, release);
+ return -ENOSPC;
+}
+
+__printf(2, 3)
+void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
+
+#define f2fs_err(sbi, fmt, ...) \
+ f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
+#define f2fs_warn(sbi, fmt, ...) \
+ f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
+#define f2fs_notice(sbi, fmt, ...) \
+ f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
+#define f2fs_info(sbi, fmt, ...) \
+ f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
+#define f2fs_debug(sbi, fmt, ...) \
+ f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
+
+static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
+ struct inode *inode,
+ block_t count)
+{
+ blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
+
+ spin_lock(&sbi->stat_lock);
+ f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
+ sbi->total_valid_block_count -= (block_t)count;
+ if (sbi->reserved_blocks &&
+ sbi->current_reserved_blocks < sbi->reserved_blocks)
+ sbi->current_reserved_blocks = min(sbi->reserved_blocks,
+ sbi->current_reserved_blocks + count);
+ spin_unlock(&sbi->stat_lock);
+ if (unlikely(inode->i_blocks < sectors)) {
+ f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
+ inode->i_ino,
+ (unsigned long long)inode->i_blocks,
+ (unsigned long long)sectors);
+ set_sbi_flag(sbi, SBI_NEED_FSCK);
+ return;
+ }
+ f2fs_i_blocks_write(inode, count, false, true);
+}
+
+static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
+{
+ atomic_inc(&sbi->nr_pages[count_type]);
+
+ if (count_type == F2FS_DIRTY_DENTS ||
+ count_type == F2FS_DIRTY_NODES ||
+ count_type == F2FS_DIRTY_META ||
+ count_type == F2FS_DIRTY_QDATA ||
+ count_type == F2FS_DIRTY_IMETA)
+ set_sbi_flag(sbi, SBI_IS_DIRTY);
+}
+
+static inline void inode_inc_dirty_pages(struct inode *inode)
+{
+ atomic_inc(&F2FS_I(inode)->dirty_pages);
+ inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
+ F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
+ if (IS_NOQUOTA(inode))
+ inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
+}
+
+static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
+{
+ atomic_dec(&sbi->nr_pages[count_type]);
+}
+
+static inline void inode_dec_dirty_pages(struct inode *inode)
+{
+ if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
+ !S_ISLNK(inode->i_mode))
+ return;
+
+ atomic_dec(&F2FS_I(inode)->dirty_pages);
+ dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
+ F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
+ if (IS_NOQUOTA(inode))
+ dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
+}
+
+static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
+{
+ return atomic_read(&sbi->nr_pages[count_type]);
+}
+
+static inline int get_dirty_pages(struct inode *inode)
+{
+ return atomic_read(&F2FS_I(inode)->dirty_pages);
+}
+
+static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
+{
+ unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
+ unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
+ sbi->log_blocks_per_seg;
+
+ return segs / sbi->segs_per_sec;
+}
+
+static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
+{
+ return sbi->total_valid_block_count;
+}
+
+static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
+{
+ return sbi->discard_blks;
+}
+
+static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
+{
+ struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
+
+ /* return NAT or SIT bitmap */
+ if (flag == NAT_BITMAP)
+ return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
+ else if (flag == SIT_BITMAP)
+ return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
+
+ return 0;
+}
+
+static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
+{
+ return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
+}
+
+static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
+{
+ struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
+ int offset;
+
+ if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
+ offset = (flag == SIT_BITMAP) ?
+ le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
+ /*
+ * if large_nat_bitmap feature is enabled, leave checksum
+ * protection for all nat/sit bitmaps.
+ */
+ return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
+ }
+
+ if (__cp_payload(sbi) > 0) {
+ if (flag == NAT_BITMAP)
+ return &ckpt->sit_nat_version_bitmap;
+ else
+ return (unsigned char *)ckpt + F2FS_BLKSIZE;
+ } else {
+ offset = (flag == NAT_BITMAP) ?
+ le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
+ return &ckpt->sit_nat_version_bitmap + offset;
+ }
+}
+
+static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
+{
+ block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
+
+ if (sbi->cur_cp_pack == 2)
+ start_addr += sbi->blocks_per_seg;
+ return start_addr;
+}
+
+static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
+{
+ block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
+
+ if (sbi->cur_cp_pack == 1)
+ start_addr += sbi->blocks_per_seg;
+ return start_addr;
+}
+
+static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
+{
+ sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
+}
+
+static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
+{
+ return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
+}
+
+static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
+ struct inode *inode, bool is_inode)
+{
+ block_t valid_block_count;
+ unsigned int valid_node_count, user_block_count;
+ int err;
+
+ if (is_inode) {
+ if (inode) {
+ err = dquot_alloc_inode(inode);
+ if (err)
+ return err;
+ }
+ } else {
+ err = dquot_reserve_block(inode, 1);
+ if (err)
+ return err;
+ }
+
+ if (time_to_inject(sbi, FAULT_BLOCK)) {
+ f2fs_show_injection_info(sbi, FAULT_BLOCK);
+ goto enospc;
+ }
+
+ spin_lock(&sbi->stat_lock);
+
+ valid_block_count = sbi->total_valid_block_count +
+ sbi->current_reserved_blocks + 1;
+
+ if (!__allow_reserved_blocks(sbi, inode, false))
+ valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
+ user_block_count = sbi->user_block_count;
+ if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
+ user_block_count -= sbi->unusable_block_count;
+
+ if (unlikely(valid_block_count > user_block_count)) {
+ spin_unlock(&sbi->stat_lock);
+ goto enospc;
+ }
+
+ valid_node_count = sbi->total_valid_node_count + 1;
+ if (unlikely(valid_node_count > sbi->total_node_count)) {
+ spin_unlock(&sbi->stat_lock);
+ goto enospc;
+ }
+
+ sbi->total_valid_node_count++;
+ sbi->total_valid_block_count++;
+ spin_unlock(&sbi->stat_lock);
+
+ if (inode) {
+ if (is_inode)
+ f2fs_mark_inode_dirty_sync(inode, true);
+ else
+ f2fs_i_blocks_write(inode, 1, true, true);
+ }
+
+ percpu_counter_inc(&sbi->alloc_valid_block_count);
+ return 0;
+
+enospc:
+ if (is_inode) {
+ if (inode)
+ dquot_free_inode(inode);
+ } else {
+ dquot_release_reservation_block(inode, 1);
+ }
+ return -ENOSPC;
+}
+
+static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
+ struct inode *inode, bool is_inode)
+{
+ spin_lock(&sbi->stat_lock);
+
+ f2fs_bug_on(sbi, !sbi->total_valid_block_count);
+ f2fs_bug_on(sbi, !sbi->total_valid_node_count);
+
+ sbi->total_valid_node_count--;
+ sbi->total_valid_block_count--;
+ if (sbi->reserved_blocks &&
+ sbi->current_reserved_blocks < sbi->reserved_blocks)
+ sbi->current_reserved_blocks++;
+
+ spin_unlock(&sbi->stat_lock);
+
+ if (is_inode) {
+ dquot_free_inode(inode);
+ } else {
+ if (unlikely(inode->i_blocks == 0)) {
+ f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu",
+ inode->i_ino,
+ (unsigned long long)inode->i_blocks);
+ set_sbi_flag(sbi, SBI_NEED_FSCK);
+ return;
+ }
+ f2fs_i_blocks_write(inode, 1, false, true);
+ }
+}
+
+static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
+{
+ return sbi->total_valid_node_count;
+}
+
+static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
+{
+ percpu_counter_inc(&sbi->total_valid_inode_count);
+}
+
+static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
+{
+ percpu_counter_dec(&sbi->total_valid_inode_count);
+}
+
+static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
+{
+ return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
+}
+
+static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
+ pgoff_t index, bool for_write)
+{
+ struct page *page;
+
+ if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
+ if (!for_write)
+ page = find_get_page_flags(mapping, index,
+ FGP_LOCK | FGP_ACCESSED);
+ else
+ page = find_lock_page(mapping, index);
+ if (page)
+ return page;
+
+ if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
+ f2fs_show_injection_info(F2FS_M_SB(mapping),
+ FAULT_PAGE_ALLOC);
+ return NULL;
+ }
+ }
+
+ if (!for_write)
+ return grab_cache_page(mapping, index);
+ return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
+}
+
+static inline struct page *f2fs_pagecache_get_page(
+ struct address_space *mapping, pgoff_t index,
+ int fgp_flags, gfp_t gfp_mask)
+{
+ if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
+ f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
+ return NULL;
+ }
+
+ return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
+}
+
+static inline void f2fs_copy_page(struct page *src, struct page *dst)
+{
+ char *src_kaddr = kmap(src);
+ char *dst_kaddr = kmap(dst);
+
+ memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
+ kunmap(dst);
+ kunmap(src);
+}
+
+static inline void f2fs_put_page(struct page *page, int unlock)
+{
+ if (!page)
+ return;
+
+ if (unlock) {
+ f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
+ unlock_page(page);
+ }
+ put_page(page);
+}
+
+static inline void f2fs_put_dnode(struct dnode_of_data *dn)
+{
+ if (dn->node_page)
+ f2fs_put_page(dn->node_page, 1);
+ if (dn->inode_page && dn->node_page != dn->inode_page)
+ f2fs_put_page(dn->inode_page, 0);
+ dn->node_page = NULL;
+ dn->inode_page = NULL;
+}
+
+static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
+ size_t size)
+{
+ return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
+}
+
+static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
+ gfp_t flags)
+{
+ void *entry;
+
+ entry = kmem_cache_alloc(cachep, flags);
+ if (!entry)
+ entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
+ return entry;
+}
+
+static inline struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi,
+ int npages, bool no_fail)
+{
+ struct bio *bio;
+
+ if (no_fail) {
+ /* No failure on bio allocation */
+ bio = bio_alloc(GFP_NOIO, npages);
+ if (!bio)
+ bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
+ return bio;
+ }
+ if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
+ f2fs_show_injection_info(sbi, FAULT_ALLOC_BIO);
+ return NULL;
+ }
+
+ return bio_alloc(GFP_KERNEL, npages);
+}
+
+static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
+{
+ if (sbi->gc_mode == GC_URGENT)
+ return true;
+
+ if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
+ get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
+ get_pages(sbi, F2FS_WB_CP_DATA) ||
+ get_pages(sbi, F2FS_DIO_READ) ||
+ get_pages(sbi, F2FS_DIO_WRITE))
+ return false;
+
+ if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
+ atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
+ return false;
+
+ if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
+ atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
+ return false;
+
+ return f2fs_time_over(sbi, type);
+}
+
+static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
+ unsigned long index, void *item)
+{
+ while (radix_tree_insert(root, index, item))
+ cond_resched();
+}
+
+#define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
+
+static inline bool IS_INODE(struct page *page)
+{
+ struct f2fs_node *p = F2FS_NODE(page);
+
+ return RAW_IS_INODE(p);
+}
+
+static inline int offset_in_addr(struct f2fs_inode *i)
+{
+ return (i->i_inline & F2FS_EXTRA_ATTR) ?
+ (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
+}
+
+static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
+{
+ return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
+}
+
+static inline int f2fs_has_extra_attr(struct inode *inode);
+static inline block_t datablock_addr(struct inode *inode,
+ struct page *node_page, unsigned int offset)
+{
+ struct f2fs_node *raw_node;
+ __le32 *addr_array;
+ int base = 0;
+ bool is_inode = IS_INODE(node_page);
+
+ raw_node = F2FS_NODE(node_page);
+
+ /* from GC path only */
+ if (is_inode) {
+ if (!inode)
+ base = offset_in_addr(&raw_node->i);
+ else if (f2fs_has_extra_attr(inode))
+ base = get_extra_isize(inode);
+ }
+
+ addr_array = blkaddr_in_node(raw_node);
+ return le32_to_cpu(addr_array[base + offset]);
+}
+
+static inline int f2fs_test_bit(unsigned int nr, char *addr)
+{
+ int mask;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ return mask & *addr;
+}
+
+static inline void f2fs_set_bit(unsigned int nr, char *addr)
+{
+ int mask;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ *addr |= mask;
+}
+
+static inline void f2fs_clear_bit(unsigned int nr, char *addr)
+{
+ int mask;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ *addr &= ~mask;
+}
+
+static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
+{
+ int mask;
+ int ret;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ ret = mask & *addr;
+ *addr |= mask;
+ return ret;
+}
+
+static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
+{
+ int mask;
+ int ret;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ ret = mask & *addr;
+ *addr &= ~mask;
+ return ret;
+}
+
+static inline void f2fs_change_bit(unsigned int nr, char *addr)
+{
+ int mask;
+
+ addr += (nr >> 3);
+ mask = 1 << (7 - (nr & 0x07));
+ *addr ^= mask;
+}
+
+/*
+ * On-disk inode flags (f2fs_inode::i_flags)
+ */
+#define F2FS_SYNC_FL 0x00000008 /* Synchronous updates */
+#define F2FS_IMMUTABLE_FL 0x00000010 /* Immutable file */
+#define F2FS_APPEND_FL 0x00000020 /* writes to file may only append */
+#define F2FS_NODUMP_FL 0x00000040 /* do not dump file */
+#define F2FS_NOATIME_FL 0x00000080 /* do not update atime */
+#define F2FS_INDEX_FL 0x00001000 /* hash-indexed directory */
+#define F2FS_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
+#define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
+#define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */
+
+/* Flags that should be inherited by new inodes from their parent. */
+#define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
+ F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
+ F2FS_CASEFOLD_FL)
+
+/* Flags that are appropriate for regular files (all but dir-specific ones). */
+#define F2FS_REG_FLMASK (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
+ F2FS_CASEFOLD_FL))
+
+/* Flags that are appropriate for non-directories/regular files. */
+#define F2FS_OTHER_FLMASK (F2FS_NODUMP_FL | F2FS_NOATIME_FL)
+
+static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
+{
+ if (S_ISDIR(mode))
+ return flags;
+ else if (S_ISREG(mode))
+ return flags & F2FS_REG_FLMASK;
+ else
+ return flags & F2FS_OTHER_FLMASK;
+}
+
+/* used for f2fs_inode_info->flags */
+enum {
+ FI_NEW_INODE, /* indicate newly allocated inode */
+ FI_DIRTY_INODE, /* indicate inode is dirty or not */
+ FI_AUTO_RECOVER, /* indicate inode is recoverable */
+ FI_DIRTY_DIR, /* indicate directory has dirty pages */
+ FI_INC_LINK, /* need to increment i_nlink */
+ FI_ACL_MODE, /* indicate acl mode */
+ FI_NO_ALLOC, /* should not allocate any blocks */
+ FI_FREE_NID, /* free allocated nide */
+ FI_NO_EXTENT, /* not to use the extent cache */
+ FI_INLINE_XATTR, /* used for inline xattr */
+ FI_INLINE_DATA, /* used for inline data*/
+ FI_INLINE_DENTRY, /* used for inline dentry */
+ FI_APPEND_WRITE, /* inode has appended data */
+ FI_UPDATE_WRITE, /* inode has in-place-update data */
+ FI_NEED_IPU, /* used for ipu per file */
+ FI_ATOMIC_FILE, /* indicate atomic file */
+ FI_ATOMIC_COMMIT, /* indicate the state of atomical committing */
+ FI_VOLATILE_FILE, /* indicate volatile file */
+ FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
+ FI_DROP_CACHE, /* drop dirty page cache */
+ FI_DATA_EXIST, /* indicate data exists */
+ FI_INLINE_DOTS, /* indicate inline dot dentries */
+ FI_DO_DEFRAG, /* indicate defragment is running */
+ FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */
+ FI_NO_PREALLOC, /* indicate skipped preallocated blocks */
+ FI_HOT_DATA, /* indicate file is hot */
+ FI_EXTRA_ATTR, /* indicate file has extra attribute */
+ FI_PROJ_INHERIT, /* indicate file inherits projectid */
+ FI_PIN_FILE, /* indicate file should not be gced */
+ FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
+ FI_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
+};
+
+static inline void __mark_inode_dirty_flag(struct inode *inode,
+ int flag, bool set)
+{
+ switch (flag) {
+ case FI_INLINE_XATTR:
+ case FI_INLINE_DATA:
+ case FI_INLINE_DENTRY:
+ case FI_NEW_INODE:
+ if (set)
+ return;
+ /* fall through */
+ case FI_DATA_EXIST:
+ case FI_INLINE_DOTS:
+ case FI_PIN_FILE:
+ f2fs_mark_inode_dirty_sync(inode, true);
+ }
+}
+
+static inline void set_inode_flag(struct inode *inode, int flag)
+{
+ if (!test_bit(flag, &F2FS_I(inode)->flags))
+ set_bit(flag, &F2FS_I(inode)->flags);
+ __mark_inode_dirty_flag(inode, flag, true);
+}
+
+static inline int is_inode_flag_set(struct inode *inode, int flag)
+{
+ return test_bit(flag, &F2FS_I(inode)->flags);
+}
+
+static inline void clear_inode_flag(struct inode *inode, int flag)
+{
+ if (test_bit(flag, &F2FS_I(inode)->flags))
+ clear_bit(flag, &F2FS_I(inode)->flags);
+ __mark_inode_dirty_flag(inode, flag, false);
+}
+
+static inline bool f2fs_verity_in_progress(struct inode *inode)
+{
+ return IS_ENABLED(CONFIG_FS_VERITY) &&
+ is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
+}
+
+static inline void set_acl_inode(struct inode *inode, umode_t mode)
+{
+ F2FS_I(inode)->i_acl_mode = mode;
+ set_inode_flag(inode, FI_ACL_MODE);
+ f2fs_mark_inode_dirty_sync(inode, false);
+}
+
+static inline void f2fs_i_links_write(struct inode *inode, bool inc)
+{
+ if (inc)
+ inc_nlink(inode);
+ else
+ drop_nlink(inode);
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void f2fs_i_blocks_write(struct inode *inode,
+ block_t diff, bool add, bool claim)
+{
+ bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
+ bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
+
+ /* add = 1, claim = 1 should be dquot_reserve_block in pair */
+ if (add) {
+ if (claim)
+ dquot_claim_block(inode, diff);
+ else
+ dquot_alloc_block_nofail(inode, diff);
+ } else {
+ dquot_free_block(inode, diff);
+ }
+
+ f2fs_mark_inode_dirty_sync(inode, true);
+ if (clean || recover)
+ set_inode_flag(inode, FI_AUTO_RECOVER);
+}
+
+static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
+{
+ bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
+ bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
+
+ if (i_size_read(inode) == i_size)
+ return;
+
+ i_size_write(inode, i_size);
+ f2fs_mark_inode_dirty_sync(inode, true);
+ if (clean || recover)
+ set_inode_flag(inode, FI_AUTO_RECOVER);
+}
+
+static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
+{
+ F2FS_I(inode)->i_current_depth = depth;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void f2fs_i_gc_failures_write(struct inode *inode,
+ unsigned int count)
+{
+ F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
+{
+ F2FS_I(inode)->i_xattr_nid = xnid;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
+{
+ F2FS_I(inode)->i_pino = pino;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
+{
+ struct f2fs_inode_info *fi = F2FS_I(inode);
+
+ if (ri->i_inline & F2FS_INLINE_XATTR)
+ set_bit(FI_INLINE_XATTR, &fi->flags);
+ if (ri->i_inline & F2FS_INLINE_DATA)
+ set_bit(FI_INLINE_DATA, &fi->flags);
+ if (ri->i_inline & F2FS_INLINE_DENTRY)
+ set_bit(FI_INLINE_DENTRY, &fi->flags);
+ if (ri->i_inline & F2FS_DATA_EXIST)
+ set_bit(FI_DATA_EXIST, &fi->flags);
+ if (ri->i_inline & F2FS_INLINE_DOTS)
+ set_bit(FI_INLINE_DOTS, &fi->flags);
+ if (ri->i_inline & F2FS_EXTRA_ATTR)
+ set_bit(FI_EXTRA_ATTR, &fi->flags);
+ if (ri->i_inline & F2FS_PIN_FILE)
+ set_bit(FI_PIN_FILE, &fi->flags);
+}
+
+static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
+{
+ ri->i_inline = 0;
+
+ if (is_inode_flag_set(inode, FI_INLINE_XATTR))
+ ri->i_inline |= F2FS_INLINE_XATTR;
+ if (is_inode_flag_set(inode, FI_INLINE_DATA))
+ ri->i_inline |= F2FS_INLINE_DATA;
+ if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
+ ri->i_inline |= F2FS_INLINE_DENTRY;
+ if (is_inode_flag_set(inode, FI_DATA_EXIST))
+ ri->i_inline |= F2FS_DATA_EXIST;
+ if (is_inode_flag_set(inode, FI_INLINE_DOTS))
+ ri->i_inline |= F2FS_INLINE_DOTS;
+ if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
+ ri->i_inline |= F2FS_EXTRA_ATTR;
+ if (is_inode_flag_set(inode, FI_PIN_FILE))
+ ri->i_inline |= F2FS_PIN_FILE;
+}
+
+static inline int f2fs_has_extra_attr(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_EXTRA_ATTR);
+}
+
+static inline int f2fs_has_inline_xattr(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_INLINE_XATTR);
+}
+
+static inline unsigned int addrs_per_inode(struct inode *inode)
+{
+ unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
+ get_inline_xattr_addrs(inode);
+ return ALIGN_DOWN(addrs, 1);
+}
+
+static inline unsigned int addrs_per_block(struct inode *inode)
+{
+ return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, 1);
+}
+
+static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
+{
+ struct f2fs_inode *ri = F2FS_INODE(page);
+
+ return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
+ get_inline_xattr_addrs(inode)]);
+}
+
+static inline int inline_xattr_size(struct inode *inode)
+{
+ if (f2fs_has_inline_xattr(inode))
+ return get_inline_xattr_addrs(inode) * sizeof(__le32);
+ return 0;
+}
+
+static inline int f2fs_has_inline_data(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_INLINE_DATA);
+}
+
+static inline int f2fs_exist_data(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_DATA_EXIST);
+}
+
+static inline int f2fs_has_inline_dots(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_INLINE_DOTS);
+}
+
+static inline bool f2fs_is_pinned_file(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_PIN_FILE);
+}
+
+static inline bool f2fs_is_atomic_file(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_ATOMIC_FILE);
+}
+
+static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
+}
+
+static inline bool f2fs_is_volatile_file(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_VOLATILE_FILE);
+}
+
+static inline bool f2fs_is_first_block_written(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
+}
+
+static inline bool f2fs_is_drop_cache(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_DROP_CACHE);
+}
+
+static inline void *inline_data_addr(struct inode *inode, struct page *page)
+{
+ struct f2fs_inode *ri = F2FS_INODE(page);
+ int extra_size = get_extra_isize(inode);
+
+ return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
+}
+
+static inline int f2fs_has_inline_dentry(struct inode *inode)
+{
+ return is_inode_flag_set(inode, FI_INLINE_DENTRY);
+}
+
+static inline int is_file(struct inode *inode, int type)
+{
+ return F2FS_I(inode)->i_advise & type;
+}
+
+static inline void set_file(struct inode *inode, int type)
+{
+ F2FS_I(inode)->i_advise |= type;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline void clear_file(struct inode *inode, int type)
+{
+ F2FS_I(inode)->i_advise &= ~type;
+ f2fs_mark_inode_dirty_sync(inode, true);
+}
+
+static inline bool f2fs_is_time_consistent(struct inode *inode)
+{
+ if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
+ return false;
+ if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
+ return false;
+ if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
+ return false;
+ if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
+ &F2FS_I(inode)->i_crtime))
+ return false;
+ return true;
+}
+
+static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
+{
+ bool ret;
+
+ if (dsync) {
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+ spin_lock(&sbi->inode_lock[DIRTY_META]);
+ ret = list_empty(&F2FS_I(inode)->gdirty_list);
+ spin_unlock(&sbi->inode_lock[DIRTY_META]);
+ return ret;
+ }
+ if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
+ file_keep_isize(inode) ||
+ i_size_read(inode) & ~PAGE_MASK)
+ return false;
+
+ if (!f2fs_is_time_consistent(inode))
+ return false;
+
+ down_read(&F2FS_I(inode)->i_sem);
+ ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
+ up_read(&F2FS_I(inode)->i_sem);
+
+ return ret;
+}
+
+static inline bool f2fs_readonly(struct super_block *sb)
+{
+ return sb_rdonly(sb);
+}
+
+static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
+{
+ return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
+}
+
+static inline bool is_dot_dotdot(const struct qstr *str)
+{
+ if (str->len == 1 && str->name[0] == '.')
+ return true;
+
+ if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
+ return true;
+
+ return false;
+}
+
+static inline bool f2fs_may_extent_tree(struct inode *inode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+ if (!test_opt(sbi, EXTENT_CACHE) ||
+ is_inode_flag_set(inode, FI_NO_EXTENT))
+ return false;
+
+ /*
+ * for recovered files during mount do not create extents
+ * if shrinker is not registered.
+ */
+ if (list_empty(&sbi->s_list))
+ return false;
+
+ return S_ISREG(inode->i_mode);
+}
+
+static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
+ size_t size, gfp_t flags)
+{
+ void *ret;
+
+ if (time_to_inject(sbi, FAULT_KMALLOC)) {
+ f2fs_show_injection_info(sbi, FAULT_KMALLOC);
+ return NULL;
+ }
+
+ ret = kmalloc(size, flags);
+ if (ret)
+ return ret;
+
+ return kvmalloc(size, flags);
+}
+
+static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
+ size_t size, gfp_t flags)
+{
+ return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
+}
+
+static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
+ size_t size, gfp_t flags)
+{
+ if (time_to_inject(sbi, FAULT_KVMALLOC)) {
+ f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
+ return NULL;
+ }
+
+ return kvmalloc(size, flags);
+}
+
+static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
+ size_t size, gfp_t flags)
+{
+ return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
+}
+
+static inline int get_extra_isize(struct inode *inode)
+{
+ return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
+}
+
+static inline int get_inline_xattr_addrs(struct inode *inode)
+{
+ return F2FS_I(inode)->i_inline_xattr_size;
+}
+
+#define f2fs_get_inode_mode(i) \
+ ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
+ (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
+
+#define F2FS_TOTAL_EXTRA_ATTR_SIZE \
+ (offsetof(struct f2fs_inode, i_extra_end) - \
+ offsetof(struct f2fs_inode, i_extra_isize)) \
+
+#define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
+#define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field) \
+ ((offsetof(typeof(*(f2fs_inode)), field) + \
+ sizeof((f2fs_inode)->field)) \
+ <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \
+
+static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
+{
+ int i;
+
+ spin_lock(&sbi->iostat_lock);
+ for (i = 0; i < NR_IO_TYPE; i++)
+ sbi->write_iostat[i] = 0;
+ spin_unlock(&sbi->iostat_lock);
+}
+
+static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+ enum iostat_type type, unsigned long long io_bytes)
+{
+ if (!sbi->iostat_enable)
+ return;
+ spin_lock(&sbi->iostat_lock);
+ sbi->write_iostat[type] += io_bytes;
+
+ if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
+ sbi->write_iostat[APP_BUFFERED_IO] =
+ sbi->write_iostat[APP_WRITE_IO] -
+ sbi->write_iostat[APP_DIRECT_IO];
+ spin_unlock(&sbi->iostat_lock);
+}
+
+#define __is_large_section(sbi) ((sbi)->segs_per_sec > 1)
+
+#define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
+
+bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
+ block_t blkaddr, int type);
+static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
+ block_t blkaddr, int type)
+{
+ if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
+ f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
+ blkaddr, type);
+ f2fs_bug_on(sbi, 1);
+ }
+}
+
+static inline bool __is_valid_data_blkaddr(block_t blkaddr)
+{
+ if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR)
+ return false;
+ return true;
+}
+
+static inline void f2fs_set_page_private(struct page *page,
+ unsigned long data)
+{
+ if (PagePrivate(page))
+ return;
+
+ get_page(page);
+ SetPagePrivate(page);
+ set_page_private(page, data);
+}
+
+static inline void f2fs_clear_page_private(struct page *page)
+{
+ if (!PagePrivate(page))
+ return;
+
+ set_page_private(page, 0);
+ ClearPagePrivate(page);
+ f2fs_put_page(page, 0);
+}
+
+/*
+ * file.c
+ */
+int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
+void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
+int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
+int f2fs_truncate(struct inode *inode);
+int f2fs_getattr(const struct path *path, struct kstat *stat,
+ u32 request_mask, unsigned int flags);
+int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
+int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
+void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
+int f2fs_precache_extents(struct inode *inode);
+long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
+long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
+int f2fs_pin_file_control(struct inode *inode, bool inc);
+
+/*
+ * inode.c
+ */
+void f2fs_set_inode_flags(struct inode *inode);
+bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
+void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
+struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
+struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
+int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
+void f2fs_update_inode(struct inode *inode, struct page *node_page);
+void f2fs_update_inode_page(struct inode *inode);
+int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
+void f2fs_evict_inode(struct inode *inode);
+void f2fs_handle_failed_inode(struct inode *inode);
+
+/*
+ * namei.c
+ */
+int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
+ bool hot, bool set);
+struct dentry *f2fs_get_parent(struct dentry *child);
+
+extern int f2fs_ci_compare(const struct inode *parent,
+ const struct qstr *name,
+ const struct qstr *entry,
+ bool quick);
+
+/*
+ * dir.c
+ */
+unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
+struct f2fs_dir_entry *f2fs_find_target_dentry(struct fscrypt_name *fname,
+ f2fs_hash_t namehash, int *max_slots,
+ struct f2fs_dentry_ptr *d);
+int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
+ unsigned int start_pos, struct fscrypt_str *fstr);
+void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
+ struct f2fs_dentry_ptr *d);
+struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
+ const struct qstr *new_name,
+ const struct qstr *orig_name, struct page *dpage);
+void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
+ unsigned int current_depth);
+int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
+void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
+struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
+ struct fscrypt_name *fname, struct page **res_page);
+struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
+ const struct qstr *child, struct page **res_page);
+struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
+ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
+ struct page **page);
+void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
+ struct page *page, struct inode *inode);
+void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
+ const struct qstr *name, f2fs_hash_t name_hash,
+ unsigned int bit_pos);
+int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
+ const struct qstr *orig_name,
+ struct inode *inode, nid_t ino, umode_t mode);
+int f2fs_add_dentry(struct inode *dir, struct fscrypt_name *fname,
+ struct inode *inode, nid_t ino, umode_t mode);
+int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
+ struct inode *inode, nid_t ino, umode_t mode);
+void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
+ struct inode *dir, struct inode *inode);
+int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
+bool f2fs_empty_dir(struct inode *dir);
+
+static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
+{
+ return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
+ inode, inode->i_ino, inode->i_mode);
+}
+
+/*
+ * super.c
+ */
+int f2fs_inode_dirtied(struct inode *inode, bool sync);
+void f2fs_inode_synced(struct inode *inode);
+int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
+int f2fs_quota_sync(struct super_block *sb, int type);
+void f2fs_quota_off_umount(struct super_block *sb);
+int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
+int f2fs_sync_fs(struct super_block *sb, int sync);
+int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
+
+/*
+ * hash.c
+ */
+f2fs_hash_t f2fs_dentry_hash(const struct inode *dir,
+ const struct qstr *name_info, struct fscrypt_name *fname);
+
+/*
+ * node.c
+ */
+struct dnode_of_data;
+struct node_info;
+
+int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
+bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
+bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
+void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
+void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
+void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
+int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
+bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
+bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
+int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
+ struct node_info *ni);
+pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
+int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
+int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
+int f2fs_truncate_xattr_node(struct inode *inode);
+int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
+ unsigned int seq_id);
+int f2fs_remove_inode_page(struct inode *inode);
+struct page *f2fs_new_inode_page(struct inode *inode);
+struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
+void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
+struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
+struct page *f2fs_get_node_page_ra(struct page *parent, int start);
+int f2fs_move_node_page(struct page *node_page, int gc_type);
+int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
+ struct writeback_control *wbc, bool atomic,
+ unsigned int *seq_id);
+int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
+ struct writeback_control *wbc,
+ bool do_balance, enum iostat_type io_type);
+int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
+bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
+void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
+void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
+int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
+void f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
+int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
+int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
+int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
+ unsigned int segno, struct f2fs_summary_block *sum);
+int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
+int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
+void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
+int __init f2fs_create_node_manager_caches(void);
+void f2fs_destroy_node_manager_caches(void);
+
+/*
+ * segment.c
+ */
+bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
+void f2fs_register_inmem_page(struct inode *inode, struct page *page);
+void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
+void f2fs_drop_inmem_pages(struct inode *inode);
+void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
+int f2fs_commit_inmem_pages(struct inode *inode);
+void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
+void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi);
+int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
+int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
+int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
+void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
+void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
+bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
+void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
+void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
+bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
+void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
+ struct cp_control *cpc);
+void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
+block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
+int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
+void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
+int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
+void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
+ unsigned int start, unsigned int end);
+void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi, int type);
+int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
+bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
+ struct cp_control *cpc);
+struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
+void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
+ block_t blk_addr);
+void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
+ enum iostat_type io_type);
+void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
+void f2fs_outplace_write_data(struct dnode_of_data *dn,
+ struct f2fs_io_info *fio);
+int f2fs_inplace_write_data(struct f2fs_io_info *fio);
+void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
+ block_t old_blkaddr, block_t new_blkaddr,
+ bool recover_curseg, bool recover_newaddr);
+void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
+ block_t old_addr, block_t new_addr,
+ unsigned char version, bool recover_curseg,
+ bool recover_newaddr);
+void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
+ block_t old_blkaddr, block_t *new_blkaddr,
+ struct f2fs_summary *sum, int type,
+ struct f2fs_io_info *fio, bool add_list);
+void f2fs_wait_on_page_writeback(struct page *page,
+ enum page_type type, bool ordered, bool locked);
+void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
+void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
+ block_t len);
+void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
+void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
+int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
+ unsigned int val, int alloc);
+void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
+int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
+void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
+int __init f2fs_create_segment_manager_caches(void);
+void f2fs_destroy_segment_manager_caches(void);
+int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
+enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
+ enum page_type type, enum temp_type temp);
+
+/*
+ * checkpoint.c
+ */
+void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
+struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
+struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
+struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index);
+struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
+bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
+ block_t blkaddr, int type);
+int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
+ int type, bool sync);
+void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
+long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
+ long nr_to_write, enum iostat_type io_type);
+void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
+void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
+void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
+bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
+void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
+ unsigned int devidx, int type);
+bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
+ unsigned int devidx, int type);
+int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
+int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
+void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
+void f2fs_add_orphan_inode(struct inode *inode);
+void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
+int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
+int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
+void f2fs_update_dirty_page(struct inode *inode, struct page *page);
+void f2fs_remove_dirty_inode(struct inode *inode);
+int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
+void f2fs_wait_on_all_pages_writeback(struct f2fs_sb_info *sbi);
+int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
+void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
+int __init f2fs_create_checkpoint_caches(void);
+void f2fs_destroy_checkpoint_caches(void);
+
+/*
+ * data.c
+ */
+int f2fs_init_post_read_processing(void);
+void f2fs_destroy_post_read_processing(void);
+int f2fs_init_bio_entry_cache(void);
+void f2fs_destroy_bio_entry_cache(void);
+void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
+void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
+ struct inode *inode, struct page *page,
+ nid_t ino, enum page_type type);
+void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
+ struct bio **bio, struct page *page);
+void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
+int f2fs_submit_page_bio(struct f2fs_io_info *fio);
+int f2fs_merge_page_bio(struct f2fs_io_info *fio);
+void f2fs_submit_page_write(struct f2fs_io_info *fio);
+struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
+ block_t blk_addr, struct bio *bio);
+int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
+void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
+void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
+int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
+int f2fs_reserve_new_block(struct dnode_of_data *dn);
+int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
+int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
+int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
+struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
+ int op_flags, bool for_write);
+struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
+struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
+ bool for_write);
+struct page *f2fs_get_new_data_page(struct inode *inode,
+ struct page *ipage, pgoff_t index, bool new_i_size);
+int f2fs_do_write_data_page(struct f2fs_io_info *fio);
+void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
+int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
+ int create, int flag);
+int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+ u64 start, u64 len);
+bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
+bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
+void f2fs_invalidate_page(struct page *page, unsigned int offset,
+ unsigned int length);
+int f2fs_release_page(struct page *page, gfp_t wait);
+#ifdef CONFIG_MIGRATION
+int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
+ struct page *page, enum migrate_mode mode);
+#endif
+bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
+void f2fs_clear_radix_tree_dirty_tag(struct page *page);
+
+/*
+ * gc.c
+ */
+int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
+void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
+block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
+int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
+ unsigned int segno);
+void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
+int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
+
+/*
+ * recovery.c
+ */
+int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
+bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
+
+/*
+ * debug.c
+ */
+#ifdef CONFIG_F2FS_STAT_FS
+struct f2fs_stat_info {
+ struct list_head stat_list;
+ struct f2fs_sb_info *sbi;
+ int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
+ int main_area_segs, main_area_sections, main_area_zones;
+ unsigned long long hit_largest, hit_cached, hit_rbtree;
+ unsigned long long hit_total, total_ext;
+ int ext_tree, zombie_tree, ext_node;
+ int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
+ int ndirty_data, ndirty_qdata;
+ int inmem_pages;
+ unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
+ int nats, dirty_nats, sits, dirty_sits;
+ int free_nids, avail_nids, alloc_nids;
+ int total_count, utilization;
+ int bg_gc, nr_wb_cp_data, nr_wb_data;
+ int nr_rd_data, nr_rd_node, nr_rd_meta;
+ int nr_dio_read, nr_dio_write;
+ unsigned int io_skip_bggc, other_skip_bggc;
+ int nr_flushing, nr_flushed, flush_list_empty;
+ int nr_discarding, nr_discarded;
+ int nr_discard_cmd;
+ unsigned int undiscard_blks;
+ int inline_xattr, inline_inode, inline_dir, append, update, orphans;
+ int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
+ unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
+ unsigned int bimodal, avg_vblocks;
+ int util_free, util_valid, util_invalid;
+ int rsvd_segs, overp_segs;
+ int dirty_count, node_pages, meta_pages;
+ int prefree_count, call_count, cp_count, bg_cp_count;
+ int tot_segs, node_segs, data_segs, free_segs, free_secs;
+ int bg_node_segs, bg_data_segs;
+ int tot_blks, data_blks, node_blks;
+ int bg_data_blks, bg_node_blks;
+ unsigned long long skipped_atomic_files[2];
+ int curseg[NR_CURSEG_TYPE];
+ int cursec[NR_CURSEG_TYPE];
+ int curzone[NR_CURSEG_TYPE];
+
+ unsigned int meta_count[META_MAX];
+ unsigned int segment_count[2];
+ unsigned int block_count[2];
+ unsigned int inplace_count;
+ unsigned long long base_mem, cache_mem, page_mem;
+};
+
+static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
+{
+ return (struct f2fs_stat_info *)sbi->stat_info;
+}
+
+#define stat_inc_cp_count(si) ((si)->cp_count++)
+#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
+#define stat_inc_call_count(si) ((si)->call_count++)
+#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
+#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
+#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
+#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
+#define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
+#define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext))
+#define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree))
+#define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest))
+#define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached))
+#define stat_inc_inline_xattr(inode) \
+ do { \
+ if (f2fs_has_inline_xattr(inode)) \
+ (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \
+ } while (0)
+#define stat_dec_inline_xattr(inode) \
+ do { \
+ if (f2fs_has_inline_xattr(inode)) \
+ (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \
+ } while (0)
+#define stat_inc_inline_inode(inode) \
+ do { \
+ if (f2fs_has_inline_data(inode)) \
+ (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \
+ } while (0)
+#define stat_dec_inline_inode(inode) \
+ do { \
+ if (f2fs_has_inline_data(inode)) \
+ (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \
+ } while (0)
+#define stat_inc_inline_dir(inode) \
+ do { \
+ if (f2fs_has_inline_dentry(inode)) \
+ (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \
+ } while (0)
+#define stat_dec_inline_dir(inode) \
+ do { \
+ if (f2fs_has_inline_dentry(inode)) \
+ (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \
+ } while (0)
+#define stat_inc_meta_count(sbi, blkaddr) \
+ do { \
+ if (blkaddr < SIT_I(sbi)->sit_base_addr) \
+ atomic_inc(&(sbi)->meta_count[META_CP]); \
+ else if (blkaddr < NM_I(sbi)->nat_blkaddr) \
+ atomic_inc(&(sbi)->meta_count[META_SIT]); \
+ else if (blkaddr < SM_I(sbi)->ssa_blkaddr) \
+ atomic_inc(&(sbi)->meta_count[META_NAT]); \
+ else if (blkaddr < SM_I(sbi)->main_blkaddr) \
+ atomic_inc(&(sbi)->meta_count[META_SSA]); \
+ } while (0)
+#define stat_inc_seg_type(sbi, curseg) \
+ ((sbi)->segment_count[(curseg)->alloc_type]++)
+#define stat_inc_block_count(sbi, curseg) \
+ ((sbi)->block_count[(curseg)->alloc_type]++)
+#define stat_inc_inplace_blocks(sbi) \
+ (atomic_inc(&(sbi)->inplace_count))
+#define stat_inc_atomic_write(inode) \
+ (atomic_inc(&F2FS_I_SB(inode)->aw_cnt))
+#define stat_dec_atomic_write(inode) \
+ (atomic_dec(&F2FS_I_SB(inode)->aw_cnt))
+#define stat_update_max_atomic_write(inode) \
+ do { \
+ int cur = atomic_read(&F2FS_I_SB(inode)->aw_cnt); \
+ int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt); \
+ if (cur > max) \
+ atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
+ } while (0)
+#define stat_inc_volatile_write(inode) \
+ (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
+#define stat_dec_volatile_write(inode) \
+ (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
+#define stat_update_max_volatile_write(inode) \
+ do { \
+ int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt); \
+ int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt); \
+ if (cur > max) \
+ atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
+ } while (0)
+#define stat_inc_seg_count(sbi, type, gc_type) \
+ do { \
+ struct f2fs_stat_info *si = F2FS_STAT(sbi); \
+ si->tot_segs++; \
+ if ((type) == SUM_TYPE_DATA) { \
+ si->data_segs++; \
+ si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
+ } else { \
+ si->node_segs++; \
+ si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
+ } \
+ } while (0)
+
+#define stat_inc_tot_blk_count(si, blks) \
+ ((si)->tot_blks += (blks))
+
+#define stat_inc_data_blk_count(sbi, blks, gc_type) \
+ do { \
+ struct f2fs_stat_info *si = F2FS_STAT(sbi); \
+ stat_inc_tot_blk_count(si, blks); \
+ si->data_blks += (blks); \
+ si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
+ } while (0)
+
+#define stat_inc_node_blk_count(sbi, blks, gc_type) \
+ do { \
+ struct f2fs_stat_info *si = F2FS_STAT(sbi); \
+ stat_inc_tot_blk_count(si, blks); \
+ si->node_blks += (blks); \
+ si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0; \
+ } while (0)
+
+int f2fs_build_stats(struct f2fs_sb_info *sbi);
+void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
+void __init f2fs_create_root_stats(void);
+void f2fs_destroy_root_stats(void);
+#else
+#define stat_inc_cp_count(si) do { } while (0)
+#define stat_inc_bg_cp_count(si) do { } while (0)
+#define stat_inc_call_count(si) do { } while (0)
+#define stat_inc_bggc_count(si) do { } while (0)
+#define stat_io_skip_bggc_count(sbi) do { } while (0)
+#define stat_other_skip_bggc_count(sbi) do { } while (0)
+#define stat_inc_dirty_inode(sbi, type) do { } while (0)
+#define stat_dec_dirty_inode(sbi, type) do { } while (0)
+#define stat_inc_total_hit(sb) do { } while (0)
+#define stat_inc_rbtree_node_hit(sb) do { } while (0)
+#define stat_inc_largest_node_hit(sbi) do { } while (0)
+#define stat_inc_cached_node_hit(sbi) do { } while (0)
+#define stat_inc_inline_xattr(inode) do { } while (0)
+#define stat_dec_inline_xattr(inode) do { } while (0)
+#define stat_inc_inline_inode(inode) do { } while (0)
+#define stat_dec_inline_inode(inode) do { } while (0)
+#define stat_inc_inline_dir(inode) do { } while (0)
+#define stat_dec_inline_dir(inode) do { } while (0)
+#define stat_inc_atomic_write(inode) do { } while (0)
+#define stat_dec_atomic_write(inode) do { } while (0)
+#define stat_update_max_atomic_write(inode) do { } while (0)
+#define stat_inc_volatile_write(inode) do { } while (0)
+#define stat_dec_volatile_write(inode) do { } while (0)
+#define stat_update_max_volatile_write(inode) do { } while (0)
+#define stat_inc_meta_count(sbi, blkaddr) do { } while (0)
+#define stat_inc_seg_type(sbi, curseg) do { } while (0)
+#define stat_inc_block_count(sbi, curseg) do { } while (0)
+#define stat_inc_inplace_blocks(sbi) do { } while (0)
+#define stat_inc_seg_count(sbi, type, gc_type) do { } while (0)
+#define stat_inc_tot_blk_count(si, blks) do { } while (0)
+#define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0)
+#define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0)
+
+static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
+static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
+static inline void __init f2fs_create_root_stats(void) { }
+static inline void f2fs_destroy_root_stats(void) { }
+#endif
+
+extern const struct file_operations f2fs_dir_operations;
+#ifdef CONFIG_UNICODE
+extern const struct dentry_operations f2fs_dentry_ops;
+#endif
+extern const struct file_operations f2fs_file_operations;
+extern const struct inode_operations f2fs_file_inode_operations;
+extern const struct address_space_operations f2fs_dblock_aops;
+extern const struct address_space_operations f2fs_node_aops;
+extern const struct address_space_operations f2fs_meta_aops;
+extern const struct inode_operations f2fs_dir_inode_operations;
+extern const struct inode_operations f2fs_symlink_inode_operations;
+extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
+extern const struct inode_operations f2fs_special_inode_operations;
+extern struct kmem_cache *f2fs_inode_entry_slab;
+
+/*
+ * inline.c
+ */
+bool f2fs_may_inline_data(struct inode *inode);
+bool f2fs_may_inline_dentry(struct inode *inode);
+void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
+void f2fs_truncate_inline_inode(struct inode *inode,
+ struct page *ipage, u64 from);
+int f2fs_read_inline_data(struct inode *inode, struct page *page);
+int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
+int f2fs_convert_inline_inode(struct inode *inode);
+int f2fs_write_inline_data(struct inode *inode, struct page *page);
+bool f2fs_recover_inline_data(struct inode *inode, struct page *npage);
+struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
+ struct fscrypt_name *fname, struct page **res_page);
+int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
+ struct page *ipage);
+int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
+ const struct qstr *orig_name,
+ struct inode *inode, nid_t ino, umode_t mode);
+void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
+ struct page *page, struct inode *dir,
+ struct inode *inode);
+bool f2fs_empty_inline_dir(struct inode *dir);
+int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
+ struct fscrypt_str *fstr);
+int f2fs_inline_data_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo,
+ __u64 start, __u64 len);
+
+/*
+ * shrinker.c
+ */
+unsigned long f2fs_shrink_count(struct shrinker *shrink,
+ struct shrink_control *sc);
+unsigned long f2fs_shrink_scan(struct shrinker *shrink,
+ struct shrink_control *sc);
+void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
+void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
+
+/*
+ * extent_cache.c
+ */
+struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
+ struct rb_entry *cached_re, unsigned int ofs);
+struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
+ struct rb_root_cached *root,
+ struct rb_node **parent,
+ unsigned int ofs, bool *leftmost);
+struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
+ struct rb_entry *cached_re, unsigned int ofs,
+ struct rb_entry **prev_entry, struct rb_entry **next_entry,
+ struct rb_node ***insert_p, struct rb_node **insert_parent,
+ bool force, bool *leftmost);
+bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
+ struct rb_root_cached *root);
+unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
+bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
+void f2fs_drop_extent_tree(struct inode *inode);
+unsigned int f2fs_destroy_extent_node(struct inode *inode);
+void f2fs_destroy_extent_tree(struct inode *inode);
+bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
+ struct extent_info *ei);
+void f2fs_update_extent_cache(struct dnode_of_data *dn);
+void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
+ pgoff_t fofs, block_t blkaddr, unsigned int len);
+void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
+int __init f2fs_create_extent_cache(void);
+void f2fs_destroy_extent_cache(void);
+
+/*
+ * sysfs.c
+ */
+int __init f2fs_init_sysfs(void);
+void f2fs_exit_sysfs(void);
+int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
+void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
+
+/* verity.c */
+extern const struct fsverity_operations f2fs_verityops;
+
+/*
+ * crypto support
+ */
+static inline bool f2fs_encrypted_file(struct inode *inode)
+{
+ return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
+}
+
+static inline void f2fs_set_encrypted_inode(struct inode *inode)
+{
+#ifdef CONFIG_FS_ENCRYPTION
+ file_set_encrypt(inode);
+ f2fs_set_inode_flags(inode);
+#endif
+}
+
+/*
+ * Returns true if the reads of the inode's data need to undergo some
+ * postprocessing step, like decryption or authenticity verification.
+ */
+static inline bool f2fs_post_read_required(struct inode *inode)
+{
+ return f2fs_encrypted_file(inode) || fsverity_active(inode);
+}
+
+#define F2FS_FEATURE_FUNCS(name, flagname) \
+static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
+{ \
+ return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
+}
+
+F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
+F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
+F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
+F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
+F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
+F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
+F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
+F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
+F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
+F2FS_FEATURE_FUNCS(verity, VERITY);
+F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
+F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
+
+#ifdef CONFIG_BLK_DEV_ZONED
+static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
+ block_t blkaddr)
+{
+ unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
+
+ return test_bit(zno, FDEV(devi).blkz_seq);
+}
+#endif
+
+static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
+{
+ return f2fs_sb_has_blkzoned(sbi);
+}
+
+static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
+{
+ return blk_queue_discard(bdev_get_queue(bdev)) ||
+ bdev_is_zoned(bdev);
+}
+
+static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
+{
+ int i;
+
+ if (!f2fs_is_multi_device(sbi))
+ return f2fs_bdev_support_discard(sbi->sb->s_bdev);
+
+ for (i = 0; i < sbi->s_ndevs; i++)
+ if (f2fs_bdev_support_discard(FDEV(i).bdev))
+ return true;
+ return false;
+}
+
+static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
+{
+ return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
+ f2fs_hw_should_discard(sbi);
+}
+
+static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
+{
+ int i;
+
+ if (!f2fs_is_multi_device(sbi))
+ return bdev_read_only(sbi->sb->s_bdev);
+
+ for (i = 0; i < sbi->s_ndevs; i++)
+ if (bdev_read_only(FDEV(i).bdev))
+ return true;
+ return false;
+}
+
+
+static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt)
+{
+ clear_opt(sbi, ADAPTIVE);
+ clear_opt(sbi, LFS);
+
+ switch (mt) {
+ case F2FS_MOUNT_ADAPTIVE:
+ set_opt(sbi, ADAPTIVE);
+ break;
+ case F2FS_MOUNT_LFS:
+ set_opt(sbi, LFS);
+ break;
+ }
+}
+
+static inline bool f2fs_may_encrypt(struct inode *inode)
+{
+#ifdef CONFIG_FS_ENCRYPTION
+ umode_t mode = inode->i_mode;
+
+ return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
+#else
+ return false;
+#endif
+}
+
+static inline int block_unaligned_IO(struct inode *inode,
+ struct kiocb *iocb, struct iov_iter *iter)
+{
+ unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
+ unsigned int blocksize_mask = (1 << i_blkbits) - 1;
+ loff_t offset = iocb->ki_pos;
+ unsigned long align = offset | iov_iter_alignment(iter);
+
+ return align & blocksize_mask;
+}
+
+static inline int allow_outplace_dio(struct inode *inode,
+ struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ int rw = iov_iter_rw(iter);
+
+ return (test_opt(sbi, LFS) && (rw == WRITE) &&
+ !block_unaligned_IO(inode, iocb, iter));
+}
+
+static inline bool f2fs_force_buffered_io(struct inode *inode,
+ struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ int rw = iov_iter_rw(iter);
+
+ if (f2fs_post_read_required(inode))
+ return true;
+ if (f2fs_is_multi_device(sbi))
+ return true;
+ /*
+ * for blkzoned device, fallback direct IO to buffered IO, so
+ * all IOs can be serialized by log-structured write.
+ */
+ if (f2fs_sb_has_blkzoned(sbi))
+ return true;
+ if (test_opt(sbi, LFS) && (rw == WRITE)) {
+ if (block_unaligned_IO(inode, iocb, iter))
+ return true;
+ if (F2FS_IO_ALIGNED(sbi))
+ return true;
+ }
+ if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
+ !IS_SWAPFILE(inode))
+ return true;
+
+ return false;
+}
+
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
+ unsigned int type);
+#else
+#define f2fs_build_fault_attr(sbi, rate, type) do { } while (0)
+#endif
+
+static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
+{
+#ifdef CONFIG_QUOTA
+ if (f2fs_sb_has_quota_ino(sbi))
+ return true;
+ if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
+ F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
+ F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
+ return true;
+#endif
+ return false;
+}
+
+#define EFSBADCRC EBADMSG /* Bad CRC detected */
+#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
+
+#endif /* _LINUX_F2FS_H */