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| author | Niels Dossche <dossche.niels@gmail.com> | 2022-03-03 03:38:39 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-03-14 15:13:53 +0300 |
| commit | bf7bd725b022cca0195aa81a378a82b1e731a4a3 (patch) | |
| tree | afd8412a8ccc3f0181546f72112b71b804fcf1e6 /fs/btrfs/space-info.c | |
| parent | 3777369ff1518b579560611a0d0c33f930154f64 (diff) | |
| download | linux-bf7bd725b022cca0195aa81a378a82b1e731a4a3.tar.xz | |
btrfs: add lockdep_assert_held to need_preemptive_reclaim
In a previous patch ("btrfs: extend locking to all space_info members
accesses") the locking for the space_info members was extended in
btrfs_preempt_reclaim_metadata_space because not all the member
accesses that needed locks were actually locked (bytes_pinned et al).
It was then suggested to also add a call to lockdep_assert_held to
need_preemptive_reclaim. This function also works with space_info
members. As of now, it has only two call sites which both hold the lock.
Suggested-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Niels Dossche <dossche.niels@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/space-info.c')
| -rw-r--r-- | fs/btrfs/space-info.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index 62382ae1eb02..b87931a458eb 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -737,6 +737,8 @@ static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info, u64 thresh = div_factor_fine(space_info->total_bytes, 90); u64 used; + lockdep_assert_held(&space_info->lock); + /* If we're just plain full then async reclaim just slows us down. */ if ((space_info->bytes_used + space_info->bytes_reserved + global_rsv_size) >= thresh) |