diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2022-03-08 17:15:19 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2022-03-10 13:44:43 -0500 |
| commit | 0a8e9599b91db84b25e4f13e89ed9b5cc3c2d15f (patch) | |
| tree | 11af4892e9c416e0b2edf7ea6ae03b911ec229c8 /drivers/md/dm.c | |
| parent | b99fdcdc36369d2a3a26bf44736d420eb629d8b7 (diff) | |
dm: add WARN_ON_ONCE to dm_submit_bio_remap
If a target uses dm_submit_bio_remap() it should set
ti->accounts_remapped_io.
Also, switch dm_start_io_acct() WARN_ON to WARN_ON_ONCE.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index d9111e17f0fc..1c5c9036a20e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -541,7 +541,7 @@ static void dm_start_io_acct(struct dm_io *io, struct bio *clone) * Expect no possibility for race unless is_duplicate_bio. */ if (!clone || likely(!clone_to_tio(clone)->is_duplicate_bio)) { - if (WARN_ON(io->was_accounted)) + if (WARN_ON_ONCE(io->was_accounted)) return; io->was_accounted = 1; } else if (xchg(&io->was_accounted, 1) == 1) @@ -1202,6 +1202,8 @@ void dm_submit_bio_remap(struct bio *clone, struct bio *tgt_clone, struct dm_target_io *tio = clone_to_tio(clone); struct dm_io *io = tio->io; + WARN_ON_ONCE(!tio->ti->accounts_remapped_io); + /* establish bio that will get submitted */ if (!tgt_clone) tgt_clone = clone; |