[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/fs/btrfs/transaction.h b/src/kernel/linux/v4.19/fs/btrfs/transaction.h
new file mode 100644
index 0000000..c1d34cc
--- /dev/null
+++ b/src/kernel/linux/v4.19/fs/btrfs/transaction.h
@@ -0,0 +1,235 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2007 Oracle. All rights reserved.
+ */
+
+#ifndef BTRFS_TRANSACTION_H
+#define BTRFS_TRANSACTION_H
+
+#include <linux/refcount.h>
+#include "btrfs_inode.h"
+#include "delayed-ref.h"
+#include "ctree.h"
+
+enum btrfs_trans_state {
+ TRANS_STATE_RUNNING = 0,
+ TRANS_STATE_BLOCKED = 1,
+ TRANS_STATE_COMMIT_START = 2,
+ TRANS_STATE_COMMIT_DOING = 3,
+ TRANS_STATE_UNBLOCKED = 4,
+ TRANS_STATE_COMPLETED = 5,
+ TRANS_STATE_MAX = 6,
+};
+
+#define BTRFS_TRANS_HAVE_FREE_BGS 0
+#define BTRFS_TRANS_DIRTY_BG_RUN 1
+#define BTRFS_TRANS_CACHE_ENOSPC 2
+
+struct btrfs_transaction {
+ u64 transid;
+ /*
+ * total external writers(USERSPACE/START/ATTACH) in this
+ * transaction, it must be zero before the transaction is
+ * being committed
+ */
+ atomic_t num_extwriters;
+ /*
+ * total writers in this transaction, it must be zero before the
+ * transaction can end
+ */
+ atomic_t num_writers;
+ refcount_t use_count;
+ atomic_t pending_ordered;
+
+ unsigned long flags;
+
+ /* Be protected by fs_info->trans_lock when we want to change it. */
+ enum btrfs_trans_state state;
+ int aborted;
+ struct list_head list;
+ struct extent_io_tree dirty_pages;
+ time64_t start_time;
+ wait_queue_head_t writer_wait;
+ wait_queue_head_t commit_wait;
+ wait_queue_head_t pending_wait;
+ struct list_head pending_snapshots;
+ struct list_head pending_chunks;
+ struct list_head switch_commits;
+ struct list_head dirty_bgs;
+
+ /*
+ * There is no explicit lock which protects io_bgs, rather its
+ * consistency is implied by the fact that all the sites which modify
+ * it do so under some form of transaction critical section, namely:
+ *
+ * - btrfs_start_dirty_block_groups - This function can only ever be
+ * run by one of the transaction committers. Refer to
+ * BTRFS_TRANS_DIRTY_BG_RUN usage in btrfs_commit_transaction
+ *
+ * - btrfs_write_dirty_blockgroups - this is called by
+ * commit_cowonly_roots from transaction critical section
+ * (TRANS_STATE_COMMIT_DOING)
+ *
+ * - btrfs_cleanup_dirty_bgs - called on transaction abort
+ */
+ struct list_head io_bgs;
+ struct list_head dropped_roots;
+
+ /*
+ * we need to make sure block group deletion doesn't race with
+ * free space cache writeout. This mutex keeps them from stomping
+ * on each other
+ */
+ struct mutex cache_write_mutex;
+ spinlock_t dirty_bgs_lock;
+ unsigned int num_dirty_bgs;
+ /* Protected by spin lock fs_info->unused_bgs_lock. */
+ struct list_head deleted_bgs;
+ spinlock_t dropped_roots_lock;
+ struct btrfs_delayed_ref_root delayed_refs;
+ struct btrfs_fs_info *fs_info;
+};
+
+#define __TRANS_FREEZABLE (1U << 0)
+
+#define __TRANS_START (1U << 9)
+#define __TRANS_ATTACH (1U << 10)
+#define __TRANS_JOIN (1U << 11)
+#define __TRANS_JOIN_NOLOCK (1U << 12)
+#define __TRANS_DUMMY (1U << 13)
+#define __TRANS_JOIN_NOSTART (1U << 14)
+
+#define TRANS_START (__TRANS_START | __TRANS_FREEZABLE)
+#define TRANS_ATTACH (__TRANS_ATTACH)
+#define TRANS_JOIN (__TRANS_JOIN | __TRANS_FREEZABLE)
+#define TRANS_JOIN_NOLOCK (__TRANS_JOIN_NOLOCK)
+#define TRANS_JOIN_NOSTART (__TRANS_JOIN_NOSTART)
+
+#define TRANS_EXTWRITERS (__TRANS_START | __TRANS_ATTACH)
+
+#define BTRFS_SEND_TRANS_STUB ((void *)1)
+
+struct btrfs_trans_handle {
+ u64 transid;
+ u64 bytes_reserved;
+ u64 chunk_bytes_reserved;
+ unsigned long delayed_ref_updates;
+ struct btrfs_transaction *transaction;
+ struct btrfs_block_rsv *block_rsv;
+ struct btrfs_block_rsv *orig_rsv;
+ refcount_t use_count;
+ unsigned int type;
+ short aborted;
+ bool adding_csums;
+ bool allocating_chunk;
+ bool can_flush_pending_bgs;
+ bool reloc_reserved;
+ bool sync;
+ bool dirty;
+ struct btrfs_root *root;
+ struct btrfs_fs_info *fs_info;
+ struct list_head new_bgs;
+};
+
+struct btrfs_pending_snapshot {
+ struct dentry *dentry;
+ struct inode *dir;
+ struct btrfs_root *root;
+ struct btrfs_root_item *root_item;
+ struct btrfs_root *snap;
+ struct btrfs_qgroup_inherit *inherit;
+ struct btrfs_path *path;
+ /* block reservation for the operation */
+ struct btrfs_block_rsv block_rsv;
+ /* extra metadata reservation for relocation */
+ int error;
+ bool readonly;
+ struct list_head list;
+};
+
+static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
+ struct inode *inode)
+{
+ spin_lock(&BTRFS_I(inode)->lock);
+ BTRFS_I(inode)->last_trans = trans->transaction->transid;
+ BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid;
+ BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit;
+ spin_unlock(&BTRFS_I(inode)->lock);
+}
+
+/*
+ * Make qgroup codes to skip given qgroupid, means the old/new_roots for
+ * qgroup won't contain the qgroupid in it.
+ */
+static inline void btrfs_set_skip_qgroup(struct btrfs_trans_handle *trans,
+ u64 qgroupid)
+{
+ struct btrfs_delayed_ref_root *delayed_refs;
+
+ delayed_refs = &trans->transaction->delayed_refs;
+ WARN_ON(delayed_refs->qgroup_to_skip);
+ delayed_refs->qgroup_to_skip = qgroupid;
+}
+
+static inline void btrfs_clear_skip_qgroup(struct btrfs_trans_handle *trans)
+{
+ struct btrfs_delayed_ref_root *delayed_refs;
+
+ delayed_refs = &trans->transaction->delayed_refs;
+ WARN_ON(!delayed_refs->qgroup_to_skip);
+ delayed_refs->qgroup_to_skip = 0;
+}
+
+int btrfs_end_transaction(struct btrfs_trans_handle *trans);
+struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
+ unsigned int num_items);
+struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv(
+ struct btrfs_root *root,
+ unsigned int num_items,
+ int min_factor);
+struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_join_transaction_nostart(struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_attach_transaction_barrier(
+ struct btrfs_root *root);
+int btrfs_wait_for_commit(struct btrfs_fs_info *fs_info, u64 transid);
+
+void btrfs_add_dead_root(struct btrfs_root *root);
+int btrfs_defrag_root(struct btrfs_root *root);
+int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root);
+int btrfs_commit_transaction(struct btrfs_trans_handle *trans);
+int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
+ int wait_for_unblock);
+
+/*
+ * Try to commit transaction asynchronously, so this is safe to call
+ * even holding a spinlock.
+ *
+ * It's done by informing transaction_kthread to commit transaction without
+ * waiting for commit interval.
+ */
+static inline void btrfs_commit_transaction_locksafe(
+ struct btrfs_fs_info *fs_info)
+{
+ set_bit(BTRFS_FS_NEED_ASYNC_COMMIT, &fs_info->flags);
+ wake_up_process(fs_info->transaction_kthread);
+}
+int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans);
+int btrfs_should_end_transaction(struct btrfs_trans_handle *trans);
+void btrfs_throttle(struct btrfs_fs_info *fs_info);
+int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+int btrfs_write_marked_extents(struct btrfs_fs_info *fs_info,
+ struct extent_io_tree *dirty_pages, int mark);
+int btrfs_wait_extents(struct btrfs_fs_info *fs_info,
+ struct extent_io_tree *dirty_pages);
+int btrfs_wait_tree_log_extents(struct btrfs_root *root, int mark);
+int btrfs_transaction_blocked(struct btrfs_fs_info *info);
+int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
+void btrfs_put_transaction(struct btrfs_transaction *transaction);
+void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info);
+void btrfs_add_dropped_root(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root);
+
+#endif