ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/fs/f2fs/inline.c b/marvell/linux/fs/f2fs/inline.c
new file mode 100644
index 0000000..cef1715
--- /dev/null
+++ b/marvell/linux/fs/f2fs/inline.c
@@ -0,0 +1,810 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fs/f2fs/inline.c
+ * Copyright (c) 2013, Intel Corporation
+ * Authors: Huajun Li <huajun.li@intel.com>
+ * Haicheng Li <haicheng.li@intel.com>
+ */
+
+#include <linux/fs.h>
+#include <linux/f2fs_fs.h>
+
+#include "f2fs.h"
+#include "node.h"
+#include <trace/events/f2fs.h>
+#include <trace/events/android_fs.h>
+
+bool f2fs_may_inline_data(struct inode *inode)
+{
+ if (f2fs_is_atomic_file(inode))
+ return false;
+
+ if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
+ return false;
+
+ if (i_size_read(inode) > MAX_INLINE_DATA(inode))
+ return false;
+
+ if (f2fs_post_read_required(inode))
+ return false;
+
+ return true;
+}
+
+bool f2fs_may_inline_dentry(struct inode *inode)
+{
+ if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
+ return false;
+
+ if (!S_ISDIR(inode->i_mode))
+ return false;
+
+ return true;
+}
+
+void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
+{
+ struct inode *inode = page->mapping->host;
+
+ if (PageUptodate(page))
+ return;
+
+ f2fs_bug_on(F2FS_P_SB(page), page->index);
+
+ zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
+
+ /* Copy the whole inline data block */
+ memcpy_to_page(page, 0, inline_data_addr(inode, ipage),
+ MAX_INLINE_DATA(inode));
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+}
+
+void f2fs_truncate_inline_inode(struct inode *inode,
+ struct page *ipage, u64 from)
+{
+ void *addr;
+
+ if (from >= MAX_INLINE_DATA(inode))
+ return;
+
+ addr = inline_data_addr(inode, ipage);
+
+ f2fs_wait_on_page_writeback(ipage, NODE, true, true);
+ memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
+ set_page_dirty(ipage);
+
+ if (from == 0)
+ clear_inode_flag(inode, FI_DATA_EXIST);
+}
+
+int f2fs_read_inline_data(struct inode *inode, struct page *page)
+{
+ struct page *ipage;
+
+ if (trace_android_fs_dataread_start_enabled()) {
+ char *path, pathbuf[MAX_TRACE_PATHBUF_LEN];
+
+ path = android_fstrace_get_pathname(pathbuf,
+ MAX_TRACE_PATHBUF_LEN,
+ inode);
+ trace_android_fs_dataread_start(inode, page_offset(page),
+ PAGE_SIZE, current->pid,
+ path, current->comm);
+ }
+
+ ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+ if (IS_ERR(ipage)) {
+ trace_android_fs_dataread_end(inode, page_offset(page),
+ PAGE_SIZE);
+ unlock_page(page);
+ return PTR_ERR(ipage);
+ }
+
+ if (!f2fs_has_inline_data(inode)) {
+ f2fs_put_page(ipage, 1);
+ trace_android_fs_dataread_end(inode, page_offset(page),
+ PAGE_SIZE);
+ return -EAGAIN;
+ }
+
+ if (page->index)
+ zero_user_segment(page, 0, PAGE_SIZE);
+ else
+ f2fs_do_read_inline_data(page, ipage);
+
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+ f2fs_put_page(ipage, 1);
+ trace_android_fs_dataread_end(inode, page_offset(page),
+ PAGE_SIZE);
+ unlock_page(page);
+ return 0;
+}
+
+int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
+{
+ struct f2fs_io_info fio = {
+ .sbi = F2FS_I_SB(dn->inode),
+ .ino = dn->inode->i_ino,
+ .type = DATA,
+ .op = REQ_OP_WRITE,
+ .op_flags = REQ_SYNC | REQ_PRIO,
+ .page = page,
+ .encrypted_page = NULL,
+ .io_type = FS_DATA_IO,
+ };
+ struct node_info ni;
+ int dirty, err;
+
+ if (!f2fs_exist_data(dn->inode))
+ goto clear_out;
+
+ err = f2fs_reserve_block(dn, 0);
+ if (err)
+ return err;
+
+ err = f2fs_get_node_info(fio.sbi, dn->nid, &ni);
+ if (err) {
+ f2fs_truncate_data_blocks_range(dn, 1);
+ f2fs_put_dnode(dn);
+ return err;
+ }
+
+ fio.version = ni.version;
+
+ if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
+ f2fs_put_dnode(dn);
+ set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
+ f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
+ __func__, dn->inode->i_ino, dn->data_blkaddr);
+ return -EFSCORRUPTED;
+ }
+
+ f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
+
+ f2fs_do_read_inline_data(page, dn->inode_page);
+ set_page_dirty(page);
+
+ /* clear dirty state */
+ dirty = clear_page_dirty_for_io(page);
+
+ /* write data page to try to make data consistent */
+ set_page_writeback(page);
+ ClearPageError(page);
+ fio.old_blkaddr = dn->data_blkaddr;
+ set_inode_flag(dn->inode, FI_HOT_DATA);
+ f2fs_outplace_write_data(dn, &fio);
+ f2fs_wait_on_page_writeback(page, DATA, true, true);
+ if (dirty) {
+ inode_dec_dirty_pages(dn->inode);
+ f2fs_remove_dirty_inode(dn->inode);
+ }
+
+ /* this converted inline_data should be recovered. */
+ set_inode_flag(dn->inode, FI_APPEND_WRITE);
+
+ /* clear inline data and flag after data writeback */
+ f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
+ clear_page_private_inline(dn->inode_page);
+clear_out:
+ stat_dec_inline_inode(dn->inode);
+ clear_inode_flag(dn->inode, FI_INLINE_DATA);
+ f2fs_put_dnode(dn);
+ return 0;
+}
+
+int f2fs_convert_inline_inode(struct inode *inode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct dnode_of_data dn;
+ struct page *ipage, *page;
+ int err = 0;
+
+ if (!f2fs_has_inline_data(inode) ||
+ f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb))
+ return 0;
+
+ err = dquot_initialize(inode);
+ if (err)
+ return err;
+
+ page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
+ if (!page)
+ return -ENOMEM;
+
+ f2fs_lock_op(sbi);
+
+ ipage = f2fs_get_node_page(sbi, inode->i_ino);
+ if (IS_ERR(ipage)) {
+ err = PTR_ERR(ipage);
+ goto out;
+ }
+
+ set_new_dnode(&dn, inode, ipage, ipage, 0);
+
+ if (f2fs_has_inline_data(inode))
+ err = f2fs_convert_inline_page(&dn, page);
+
+ f2fs_put_dnode(&dn);
+out:
+ f2fs_unlock_op(sbi);
+
+ f2fs_put_page(page, 1);
+
+ if (!err)
+ f2fs_balance_fs(sbi, dn.node_changed);
+
+ return err;
+}
+
+int f2fs_write_inline_data(struct inode *inode, struct page *page)
+{
+ struct dnode_of_data dn;
+ int err;
+
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
+ if (err)
+ return err;
+
+ if (!f2fs_has_inline_data(inode)) {
+ f2fs_put_dnode(&dn);
+ return -EAGAIN;
+ }
+
+ f2fs_bug_on(F2FS_I_SB(inode), page->index);
+
+ f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
+ memcpy_from_page(inline_data_addr(inode, dn.inode_page),
+ page, 0, MAX_INLINE_DATA(inode));
+ set_page_dirty(dn.inode_page);
+
+ f2fs_clear_page_cache_dirty_tag(page);
+
+ set_inode_flag(inode, FI_APPEND_WRITE);
+ set_inode_flag(inode, FI_DATA_EXIST);
+
+ clear_page_private_inline(dn.inode_page);
+ f2fs_put_dnode(&dn);
+ return 0;
+}
+
+int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct f2fs_inode *ri = NULL;
+ void *src_addr, *dst_addr;
+ struct page *ipage;
+
+ /*
+ * The inline_data recovery policy is as follows.
+ * [prev.] [next] of inline_data flag
+ * o o -> recover inline_data
+ * o x -> remove inline_data, and then recover data blocks
+ * x o -> remove data blocks, and then recover inline_data
+ * x x -> recover data blocks
+ */
+ if (IS_INODE(npage))
+ ri = F2FS_INODE(npage);
+
+ if (f2fs_has_inline_data(inode) &&
+ ri && (ri->i_inline & F2FS_INLINE_DATA)) {
+process_inline:
+ ipage = f2fs_get_node_page(sbi, inode->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
+ f2fs_wait_on_page_writeback(ipage, NODE, true, true);
+
+ src_addr = inline_data_addr(inode, npage);
+ dst_addr = inline_data_addr(inode, ipage);
+ memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
+
+ set_inode_flag(inode, FI_INLINE_DATA);
+ set_inode_flag(inode, FI_DATA_EXIST);
+
+ set_page_dirty(ipage);
+ f2fs_put_page(ipage, 1);
+ return 1;
+ }
+
+ if (f2fs_has_inline_data(inode)) {
+ ipage = f2fs_get_node_page(sbi, inode->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+ f2fs_truncate_inline_inode(inode, ipage, 0);
+ stat_dec_inline_inode(inode);
+ clear_inode_flag(inode, FI_INLINE_DATA);
+ f2fs_put_page(ipage, 1);
+ } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
+ int ret;
+
+ ret = f2fs_truncate_blocks(inode, 0, false);
+ if (ret)
+ return ret;
+ stat_inc_inline_inode(inode);
+ goto process_inline;
+ }
+ return 0;
+}
+
+struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
+ const struct f2fs_filename *fname,
+ struct page **res_page)
+{
+ struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
+ struct f2fs_dir_entry *de;
+ struct f2fs_dentry_ptr d;
+ struct page *ipage;
+ void *inline_dentry;
+
+ ipage = f2fs_get_node_page(sbi, dir->i_ino);
+ if (IS_ERR(ipage)) {
+ *res_page = ipage;
+ return NULL;
+ }
+
+ inline_dentry = inline_data_addr(dir, ipage);
+
+ make_dentry_ptr_inline(dir, &d, inline_dentry);
+ de = f2fs_find_target_dentry(&d, fname, NULL);
+ unlock_page(ipage);
+ if (IS_ERR(de)) {
+ *res_page = ERR_CAST(de);
+ de = NULL;
+ }
+ if (de)
+ *res_page = ipage;
+ else
+ f2fs_put_page(ipage, 0);
+
+ return de;
+}
+
+int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
+ struct page *ipage)
+{
+ struct f2fs_dentry_ptr d;
+ void *inline_dentry;
+
+ inline_dentry = inline_data_addr(inode, ipage);
+
+ make_dentry_ptr_inline(inode, &d, inline_dentry);
+ f2fs_do_make_empty_dir(inode, parent, &d);
+
+ set_page_dirty(ipage);
+
+ /* update i_size to MAX_INLINE_DATA */
+ if (i_size_read(inode) < MAX_INLINE_DATA(inode))
+ f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
+ return 0;
+}
+
+/*
+ * NOTE: ipage is grabbed by caller, but if any error occurs, we should
+ * release ipage in this function.
+ */
+static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
+ void *inline_dentry)
+{
+ struct page *page;
+ struct dnode_of_data dn;
+ struct f2fs_dentry_block *dentry_blk;
+ struct f2fs_dentry_ptr src, dst;
+ int err;
+
+ page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
+ if (!page) {
+ f2fs_put_page(ipage, 1);
+ return -ENOMEM;
+ }
+
+ set_new_dnode(&dn, dir, ipage, NULL, 0);
+ err = f2fs_reserve_block(&dn, 0);
+ if (err)
+ goto out;
+
+ if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
+ f2fs_put_dnode(&dn);
+ set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
+ f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
+ __func__, dir->i_ino, dn.data_blkaddr);
+ err = -EFSCORRUPTED;
+ goto out;
+ }
+
+ f2fs_wait_on_page_writeback(page, DATA, true, true);
+
+ dentry_blk = page_address(page);
+
+ /*
+ * Start by zeroing the full block, to ensure that all unused space is
+ * zeroed and no uninitialized memory is leaked to disk.
+ */
+ memset(dentry_blk, 0, F2FS_BLKSIZE);
+
+ make_dentry_ptr_inline(dir, &src, inline_dentry);
+ make_dentry_ptr_block(dir, &dst, dentry_blk);
+
+ /* copy data from inline dentry block to new dentry block */
+ memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
+ memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
+ memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
+
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+ set_page_dirty(page);
+
+ /* clear inline dir and flag after data writeback */
+ f2fs_truncate_inline_inode(dir, ipage, 0);
+
+ stat_dec_inline_dir(dir);
+ clear_inode_flag(dir, FI_INLINE_DENTRY);
+
+ /*
+ * should retrieve reserved space which was used to keep
+ * inline_dentry's structure for backward compatibility.
+ */
+ if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
+ !f2fs_has_inline_xattr(dir))
+ F2FS_I(dir)->i_inline_xattr_size = 0;
+
+ f2fs_i_depth_write(dir, 1);
+ if (i_size_read(dir) < PAGE_SIZE)
+ f2fs_i_size_write(dir, PAGE_SIZE);
+out:
+ f2fs_put_page(page, 1);
+ return err;
+}
+
+static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
+{
+ struct f2fs_dentry_ptr d;
+ unsigned long bit_pos = 0;
+ int err = 0;
+
+ make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+ while (bit_pos < d.max) {
+ struct f2fs_dir_entry *de;
+ struct f2fs_filename fname;
+ nid_t ino;
+ umode_t fake_mode;
+
+ if (!test_bit_le(bit_pos, d.bitmap)) {
+ bit_pos++;
+ continue;
+ }
+
+ de = &d.dentry[bit_pos];
+
+ if (unlikely(!de->name_len)) {
+ bit_pos++;
+ continue;
+ }
+
+ /*
+ * We only need the disk_name and hash to move the dentry.
+ * We don't need the original or casefolded filenames.
+ */
+ memset(&fname, 0, sizeof(fname));
+ fname.disk_name.name = d.filename[bit_pos];
+ fname.disk_name.len = le16_to_cpu(de->name_len);
+ fname.hash = de->hash_code;
+
+ ino = le32_to_cpu(de->ino);
+ fake_mode = f2fs_get_de_type(de) << S_SHIFT;
+
+ err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
+ if (err)
+ goto punch_dentry_pages;
+
+ bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
+ }
+ return 0;
+punch_dentry_pages:
+ truncate_inode_pages(&dir->i_data, 0);
+ f2fs_truncate_blocks(dir, 0, false);
+ f2fs_remove_dirty_inode(dir);
+ return err;
+}
+
+static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
+ void *inline_dentry)
+{
+ void *backup_dentry;
+ int err;
+
+ backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
+ MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
+ if (!backup_dentry) {
+ f2fs_put_page(ipage, 1);
+ return -ENOMEM;
+ }
+
+ memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
+ f2fs_truncate_inline_inode(dir, ipage, 0);
+
+ unlock_page(ipage);
+
+ err = f2fs_add_inline_entries(dir, backup_dentry);
+ if (err)
+ goto recover;
+
+ lock_page(ipage);
+
+ stat_dec_inline_dir(dir);
+ clear_inode_flag(dir, FI_INLINE_DENTRY);
+
+ /*
+ * should retrieve reserved space which was used to keep
+ * inline_dentry's structure for backward compatibility.
+ */
+ if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
+ !f2fs_has_inline_xattr(dir))
+ F2FS_I(dir)->i_inline_xattr_size = 0;
+
+ kfree(backup_dentry);
+ return 0;
+recover:
+ lock_page(ipage);
+ f2fs_wait_on_page_writeback(ipage, NODE, true, true);
+ memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
+ f2fs_i_depth_write(dir, 0);
+ f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
+ set_page_dirty(ipage);
+ f2fs_put_page(ipage, 1);
+
+ kfree(backup_dentry);
+ return err;
+}
+
+static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
+ void *inline_dentry)
+{
+ if (!F2FS_I(dir)->i_dir_level)
+ return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
+ else
+ return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
+}
+
+int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+ struct page *ipage;
+ struct f2fs_filename fname;
+ void *inline_dentry = NULL;
+ int err = 0;
+
+ if (!f2fs_has_inline_dentry(dir))
+ return 0;
+
+ f2fs_lock_op(sbi);
+
+ err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
+ if (err)
+ goto out;
+
+ ipage = f2fs_get_node_page(sbi, dir->i_ino);
+ if (IS_ERR(ipage)) {
+ err = PTR_ERR(ipage);
+ goto out_fname;
+ }
+
+ if (f2fs_has_enough_room(dir, ipage, &fname)) {
+ f2fs_put_page(ipage, 1);
+ goto out_fname;
+ }
+
+ inline_dentry = inline_data_addr(dir, ipage);
+
+ err = do_convert_inline_dir(dir, ipage, inline_dentry);
+ if (!err)
+ f2fs_put_page(ipage, 1);
+out_fname:
+ f2fs_free_filename(&fname);
+out:
+ f2fs_unlock_op(sbi);
+ return err;
+}
+
+int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
+ struct inode *inode, nid_t ino, umode_t mode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+ struct page *ipage;
+ unsigned int bit_pos;
+ void *inline_dentry = NULL;
+ struct f2fs_dentry_ptr d;
+ int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
+ struct page *page = NULL;
+ int err = 0;
+
+ ipage = f2fs_get_node_page(sbi, dir->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
+ inline_dentry = inline_data_addr(dir, ipage);
+ make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+ bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
+ if (bit_pos >= d.max) {
+ err = do_convert_inline_dir(dir, ipage, inline_dentry);
+ if (err)
+ return err;
+ err = -EAGAIN;
+ goto out;
+ }
+
+ if (inode) {
+ down_write(&F2FS_I(inode)->i_sem);
+ page = f2fs_init_inode_metadata(inode, dir, fname, ipage);
+ if (IS_ERR(page)) {
+ err = PTR_ERR(page);
+ goto fail;
+ }
+ }
+
+ f2fs_wait_on_page_writeback(ipage, NODE, true, true);
+
+ f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
+ bit_pos);
+
+ set_page_dirty(ipage);
+
+ /* we don't need to mark_inode_dirty now */
+ if (inode) {
+ f2fs_i_pino_write(inode, dir->i_ino);
+
+ /* synchronize inode page's data from inode cache */
+ if (is_inode_flag_set(inode, FI_NEW_INODE))
+ f2fs_update_inode(inode, page);
+
+ f2fs_put_page(page, 1);
+ }
+
+ f2fs_update_parent_metadata(dir, inode, 0);
+fail:
+ if (inode)
+ up_write(&F2FS_I(inode)->i_sem);
+out:
+ f2fs_put_page(ipage, 1);
+ return err;
+}
+
+void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
+ struct inode *dir, struct inode *inode)
+{
+ struct f2fs_dentry_ptr d;
+ void *inline_dentry;
+ int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
+ unsigned int bit_pos;
+ int i;
+
+ lock_page(page);
+ f2fs_wait_on_page_writeback(page, NODE, true, true);
+
+ inline_dentry = inline_data_addr(dir, page);
+ make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+ bit_pos = dentry - d.dentry;
+ for (i = 0; i < slots; i++)
+ __clear_bit_le(bit_pos + i, d.bitmap);
+
+ set_page_dirty(page);
+ f2fs_put_page(page, 1);
+
+ dir->i_ctime = dir->i_mtime = current_time(dir);
+ f2fs_mark_inode_dirty_sync(dir, false);
+
+ if (inode)
+ f2fs_drop_nlink(dir, inode);
+}
+
+bool f2fs_empty_inline_dir(struct inode *dir)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
+ struct page *ipage;
+ unsigned int bit_pos = 2;
+ void *inline_dentry;
+ struct f2fs_dentry_ptr d;
+
+ ipage = f2fs_get_node_page(sbi, dir->i_ino);
+ if (IS_ERR(ipage))
+ return false;
+
+ inline_dentry = inline_data_addr(dir, ipage);
+ make_dentry_ptr_inline(dir, &d, inline_dentry);
+
+ bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
+
+ f2fs_put_page(ipage, 1);
+
+ if (bit_pos < d.max)
+ return false;
+
+ return true;
+}
+
+int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
+ struct fscrypt_str *fstr)
+{
+ struct inode *inode = file_inode(file);
+ struct page *ipage = NULL;
+ struct f2fs_dentry_ptr d;
+ void *inline_dentry = NULL;
+ int err;
+
+ make_dentry_ptr_inline(inode, &d, inline_dentry);
+
+ if (ctx->pos == d.max)
+ return 0;
+
+ ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
+ /*
+ * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
+ * ipage without page's lock held.
+ */
+ unlock_page(ipage);
+
+ inline_dentry = inline_data_addr(inode, ipage);
+
+ make_dentry_ptr_inline(inode, &d, inline_dentry);
+
+ err = f2fs_fill_dentries(ctx, &d, 0, fstr);
+ if (!err)
+ ctx->pos = d.max;
+
+ f2fs_put_page(ipage, 0);
+ return err < 0 ? err : 0;
+}
+
+int f2fs_inline_data_fiemap(struct inode *inode,
+ struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
+{
+ __u64 byteaddr, ilen;
+ __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
+ FIEMAP_EXTENT_LAST;
+ struct node_info ni;
+ struct page *ipage;
+ int err = 0;
+
+ ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
+
+ if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
+ !f2fs_has_inline_data(inode)) {
+ err = -EAGAIN;
+ goto out;
+ }
+
+ if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
+ err = -EAGAIN;
+ goto out;
+ }
+
+ ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
+ if (start >= ilen)
+ goto out;
+ if (start + len < ilen)
+ ilen = start + len;
+ ilen -= start;
+
+ err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
+ if (err)
+ goto out;
+
+ byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
+ byteaddr += (char *)inline_data_addr(inode, ipage) -
+ (char *)F2FS_INODE(ipage);
+ err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
+ trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
+out:
+ f2fs_put_page(ipage, 1);
+ return err;
+}