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btrfs: tracepoints: add trace event for log_new_dir_dentries()

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log_new_dir_dentries() is an important step called during a fsync, as
well as during rename and link operations on inodes that were previously
logged. Add trace events for when entering and exiting that function.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2026-05-05 15:59:37 +01:00 committed by David Sterba
parent e61574f1a9
commit bb10bfba75
2 changed files with 61 additions and 2 deletions
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10
fs/btrfs/tree-log.c
View File

@ -5902,9 +5902,13 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
struct btrfs_inode *curr_inode = start_inode;
int ret = 0;
trace_btrfs_log_new_dir_dentries_enter(trans, start_inode);
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
if (!path) {
ret = -ENOMEM;
goto out;
}
/* Pairs with btrfs_add_delayed_iput below. */
ihold(&curr_inode->vfs_inode);
@ -6023,6 +6027,8 @@ static int log_new_dir_dentries(struct btrfs_trans_handle *trans,
kfree(dir_elem);
}
trace_btrfs_log_new_dir_dentries_exit(trans, start_inode, ret);
return ret;
}

53
include/trace/events/btrfs.h
View File

@ -1175,6 +1175,59 @@ TRACE_EVENT(btrfs_log_all_new_ancestors_exit,
__entry->transid, __entry->ret)
);
TRACE_EVENT(btrfs_log_new_dir_dentries_enter,
TP_PROTO(const struct btrfs_trans_handle *trans,
const struct btrfs_inode *inode),
TP_ARGS(trans, inode),
TP_STRUCT__entry_btrfs(
__field( u64, root_objectid )
__field( u64, ino )
__field( u64, transid )
),
TP_fast_assign(
TP_fast_assign_fsid(inode->root->fs_info);
__entry->root_objectid = btrfs_root_id(inode->root);
__entry->ino = btrfs_ino(inode);
__entry->transid = trans->transid;
),
TP_printk_btrfs("root=%llu(%s) ino=%llu transid=%llu",
show_root_type(__entry->root_objectid), __entry->ino,
__entry->transid)
);
TRACE_EVENT(btrfs_log_new_dir_dentries_exit,
TP_PROTO(const struct btrfs_trans_handle *trans,
const struct btrfs_inode *inode,
int ret),
TP_ARGS(trans, inode, ret),
TP_STRUCT__entry_btrfs(
__field( u64, root_objectid )
__field( u64, ino )
__field( u64, transid )
__field( int, ret )
),
TP_fast_assign(
TP_fast_assign_fsid(inode->root->fs_info);
__entry->root_objectid = btrfs_root_id(inode->root);
__entry->ino = btrfs_ino(inode);
__entry->transid = trans->transid;
__entry->ret = ret;
),
TP_printk_btrfs("root=%llu(%s) ino=%llu transid=%llu ret=%d",
show_root_type(__entry->root_objectid), __entry->ino,
__entry->transid, __entry->ret)
);
TRACE_EVENT(btrfs_sync_fs,
TP_PROTO(const struct btrfs_fs_info *fs_info, int wait),