diff options
| author | Mike Snitzer <snitzer@redhat.com> | 2018-12-11 17:10:26 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-12-11 17:40:02 +0300 |
| commit | c4576aed8d85d808cd6443bda58393d525207d01 (patch) | |
| tree | 909ff78658e5c82da4e8d575da1457dcaccd79bd /drivers/md | |
| parent | 6451fe73fa0f542a49bfacd7205b88a597897f58 (diff) | |
| download | linux-c4576aed8d85d808cd6443bda58393d525207d01.tar.xz | |
dm: fix request-based dm's use of dm_wait_for_completion
The md->wait waitqueue is used by both bio-based and request-based DM.
Commit dbd3bbd291 ("dm rq: leverage blk_mq_queue_busy() to check for
outstanding IO") lost sight of the requirement that
dm_wait_for_completion() must work with all types of DM devices.
Fix md_in_flight() to call the blk-mq or bio-based method accordingly.
Fixes: dbd3bbd291 ("dm rq: leverage blk_mq_queue_busy() to check for outstanding IO")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-rq.c | 6 | ||||
| -rw-r--r-- | drivers/md/dm.c | 10 |
2 files changed, 11 insertions, 5 deletions
diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c index d2397d8fcbd1..4e06be4f0a62 100644 --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c @@ -131,10 +131,8 @@ static void rq_end_stats(struct mapped_device *md, struct request *orig) static void rq_completed(struct mapped_device *md, int rw, bool run_queue) { /* nudge anyone waiting on suspend queue */ - if (unlikely(waitqueue_active(&md->wait))) { - if (!blk_mq_queue_busy(md->queue)) - wake_up(&md->wait); - } + if (unlikely(waitqueue_active(&md->wait))) + wake_up(&md->wait); /* * dm_put() must be at the end of this function. See the comment above diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 79ad4b3d215c..c414d40d645d 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -646,7 +646,7 @@ static void free_tio(struct dm_target_io *tio) bio_put(&tio->clone); } -static bool md_in_flight(struct mapped_device *md) +static bool md_in_flight_bios(struct mapped_device *md) { int cpu; struct hd_struct *part = &dm_disk(md)->part0; @@ -660,6 +660,14 @@ static bool md_in_flight(struct mapped_device *md) return sum != 0; } +static bool md_in_flight(struct mapped_device *md) +{ + if (queue_is_mq(md->queue)) + return blk_mq_queue_busy(md->queue); + else + return md_in_flight_bios(md); +} + static void start_io_acct(struct dm_io *io) { struct mapped_device *md = io->md; |