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-rw-r--r--fs/btrfs/transaction.h116
1 files changed, 80 insertions, 36 deletions
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index f104b57ad4e..7dd558ed071 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -20,93 +20,138 @@
#define __BTRFS_TRANSACTION__
#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,
+};
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
*/
- unsigned long num_writers;
+ atomic_t num_writers;
+ atomic_t use_count;
- unsigned long num_joined;
- int in_commit;
- int use_count;
- int commit_done;
- int blocked;
+ /* Be protected by fs_info->trans_lock when we want to change it. */
+ enum btrfs_trans_state state;
struct list_head list;
struct extent_io_tree dirty_pages;
unsigned long start_time;
wait_queue_head_t writer_wait;
wait_queue_head_t commit_wait;
struct list_head pending_snapshots;
+ struct list_head ordered_operations;
+ struct list_head pending_chunks;
+ struct list_head switch_commits;
struct btrfs_delayed_ref_root delayed_refs;
+ int aborted;
};
+#define __TRANS_FREEZABLE (1U << 0)
+
+#define __TRANS_USERSPACE (1U << 8)
+#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_USERSPACE (__TRANS_USERSPACE | __TRANS_FREEZABLE)
+#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_EXTWRITERS (__TRANS_USERSPACE | __TRANS_START | \
+ __TRANS_ATTACH)
+
+#define BTRFS_SEND_TRANS_STUB 1
+
struct btrfs_trans_handle {
u64 transid;
- u64 block_group;
u64 bytes_reserved;
+ u64 qgroup_reserved;
+ unsigned long use_count;
unsigned long blocks_reserved;
unsigned long blocks_used;
unsigned long delayed_ref_updates;
struct btrfs_transaction *transaction;
struct btrfs_block_rsv *block_rsv;
+ struct btrfs_block_rsv *orig_rsv;
+ short aborted;
+ short adding_csums;
+ bool allocating_chunk;
+ bool reloc_reserved;
+ bool sync;
+ unsigned int type;
+ /*
+ * this root is only needed to validate that the root passed to
+ * start_transaction is the same as the one passed to end_transaction.
+ * Subvolume quota depends on this
+ */
+ struct btrfs_root *root;
+ struct seq_list delayed_ref_elem;
+ struct list_head qgroup_ref_list;
+ struct list_head new_bgs;
};
struct btrfs_pending_snapshot {
struct dentry *dentry;
+ struct inode *dir;
struct btrfs_root *root;
struct btrfs_root *snap;
+ struct btrfs_qgroup_inherit *inherit;
/* block reservation for the operation */
struct btrfs_block_rsv block_rsv;
+ u64 qgroup_reserved;
/* extra metadata reseration for relocation */
int error;
+ bool readonly;
struct list_head list;
};
-static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
- struct inode *inode)
-{
- trans->block_group = BTRFS_I(inode)->block_group;
-}
-
-static inline void btrfs_update_inode_block_group(
- struct btrfs_trans_handle *trans,
- struct inode *inode)
-{
- BTRFS_I(inode)->block_group = trans->block_group;
-}
-
static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
struct inode *inode)
{
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;
}
int btrfs_end_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_end_transaction_nolock(struct btrfs_trans_handle *trans,
- struct btrfs_root *root);
struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
int num_items);
-struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
- int num_blocks);
-struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root,
- int num_blocks);
-struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
- int num_blocks);
+struct btrfs_trans_handle *btrfs_start_transaction_lflush(
+ struct btrfs_root *root, int num_items);
+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_attach_transaction(struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_attach_transaction_barrier(
+ struct btrfs_root *root);
+struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root);
int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid);
int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
- struct btrfs_root *root);
-int btrfs_add_dead_root(struct btrfs_root *root);
-int btrfs_drop_dead_root(struct btrfs_root *root);
-int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
-int btrfs_clean_old_snapshots(struct btrfs_root *root);
+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,
struct btrfs_root *root);
int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
@@ -119,12 +164,11 @@ int btrfs_should_end_transaction(struct btrfs_trans_handle *trans,
void btrfs_throttle(struct btrfs_root *root);
int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
- struct extent_io_tree *dirty_pages, int mark);
int btrfs_write_marked_extents(struct btrfs_root *root,
struct extent_io_tree *dirty_pages, int mark);
int btrfs_wait_marked_extents(struct btrfs_root *root,
struct extent_io_tree *dirty_pages, 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);
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:04:04 +0000