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authorAnand Jain <anand.jain@oracle.com>2019-01-30 09:45:01 +0300
committerDavid Sterba <dsterba@suse.com>2019-02-25 16:13:37 +0300
commiteb4318e59a0d5caa636662225afeea9796b27092 (patch)
treefbd61530a6b09874512df82b840be71f07b2439e /fs
parent1cec3f27168d7835ff3d23ab371cd548440131bb (diff)
downloadlinux-eb4318e59a0d5caa636662225afeea9796b27092.tar.xz
btrfs: scrub: add scrub_lock lockdep check in scrub_workers_get
scrub_workers_refcnt is protected by scrub_lock, add lockdep_assert_held() in scrub_workers_get(). Signed-off-by: Anand Jain <anand.jain@oracle.com> Suggested-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/scrub.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index f2f0be7864b8..17925af759ae 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3741,6 +3741,8 @@ static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info,
unsigned int flags = WQ_FREEZABLE | WQ_UNBOUND;
int max_active = fs_info->thread_pool_size;
+ lockdep_assert_held(&fs_info->scrub_lock);
+
if (fs_info->scrub_workers_refcnt == 0) {
fs_info->scrub_workers = btrfs_alloc_workqueue(fs_info, "scrub",
flags, is_dev_replace ? 1 : max_active, 4);