diff options
| author | Ioannis Angelakopoulos <iangelak@fb.com> | 2022-07-25 15:11:59 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-09-26 12:27:53 +0200 |
| commit | 5f4403e10f9b75b081bcc763b98d73e29de8c248 (patch) | |
| tree | 08d0bce0022fa665e96b9758b3c58ba2fea62f56 /fs/btrfs/disk-io.c | |
| parent | 9d7464c87b159bbf763c24faeb7a2dcaac96e4a1 (diff) | |
btrfs: add lockdep annotations for the ordered extents wait event
This wait event is very similar to the pending ordered wait event in the
sense that it occurs in a different context than the condition signaling
for the event. The signaling occurs in btrfs_remove_ordered_extent()
while the wait event is implemented in btrfs_start_ordered_extent() in
fs/btrfs/ordered-data.c
However, in this case a thread must not acquire the lockdep map for the
ordered extents wait event when the ordered extent is related to a free
space inode. That is because lockdep creates dependencies between locks
acquired both in execution paths related to normal inodes and paths
related to free space inodes, thus leading to false positives.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Ioannis Angelakopoulos <iangelak@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 393553fdfed6..e0e1730e67d7 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2993,6 +2993,7 @@ void btrfs_init_fs_info(struct btrfs_fs_info *fs_info) btrfs_lockdep_init_map(fs_info, btrfs_trans_num_writers); btrfs_lockdep_init_map(fs_info, btrfs_trans_num_extwriters); btrfs_lockdep_init_map(fs_info, btrfs_trans_pending_ordered); + btrfs_lockdep_init_map(fs_info, btrfs_ordered_extent); btrfs_state_lockdep_init_map(fs_info, btrfs_trans_commit_start, BTRFS_LOCKDEP_TRANS_COMMIT_START); btrfs_state_lockdep_init_map(fs_info, btrfs_trans_unblocked, |