diff options
| author | Josef Bacik <[email protected]> | 2020-08-10 11:42:31 -0400 |
|---|---|---|
| committer | David Sterba <[email protected]> | 2020-08-27 14:13:23 +0200 |
| commit | d3beaa253fd6fa40b8b18a216398e6e5376a9d21 (patch) | |
| tree | 93a9c3f00b55d2ea75d03afac745bda9f3a7dcf5 | |
| parent | ad24466588ab7d7c879053c5afd919b0c555fec0 (diff) | |
btrfs: set the lockdep class for log tree extent buffers
These are special extent buffers that get rewound in order to lookup
the state of the tree at a specific point in time. As such they do not
go through the normal initialization paths that set their lockdep class,
so handle them appropriately when they are created and before they are
locked.
CC: [email protected] # 4.4+
Reviewed-by: Filipe Manana <[email protected]>
Signed-off-by: Josef Bacik <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
| -rw-r--r-- | fs/btrfs/ctree.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index cd1cd673bc0b..cd392da69b81 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -1297,6 +1297,8 @@ tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct btrfs_path *path, btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); + btrfs_set_buffer_lockdep_class(btrfs_header_owner(eb_rewin), + eb_rewin, btrfs_header_level(eb_rewin)); btrfs_tree_read_lock(eb_rewin); __tree_mod_log_rewind(fs_info, eb_rewin, time_seq, tm); WARN_ON(btrfs_header_nritems(eb_rewin) > @@ -1370,7 +1372,6 @@ get_old_root(struct btrfs_root *root, u64 time_seq) if (!eb) return NULL; - btrfs_tree_read_lock(eb); if (old_root) { btrfs_set_header_bytenr(eb, eb->start); btrfs_set_header_backref_rev(eb, BTRFS_MIXED_BACKREF_REV); @@ -1378,6 +1379,9 @@ get_old_root(struct btrfs_root *root, u64 time_seq) btrfs_set_header_level(eb, old_root->level); btrfs_set_header_generation(eb, old_generation); } + btrfs_set_buffer_lockdep_class(btrfs_header_owner(eb), eb, + btrfs_header_level(eb)); + btrfs_tree_read_lock(eb); if (tm) __tree_mod_log_rewind(fs_info, eb, time_seq, tm); else |