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author | Pingfan Liu <piliu@redhat.com> | 2023-02-15 19:23:40 +0800 |
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committer | Mike Snitzer <snitzer@kernel.org> | 2023-02-16 12:06:44 -0500 |
commit | 0ca44fcef241768fd25ee763b3d203b9852f269b (patch) | |
tree | f9f29a6be4d2d5cdfa3533389ee9b1afc8e58515 /drivers | |
parent | b0bbd86a288ab35234edb704935982c20f74628d (diff) | |
download | linux-stable-0ca44fcef241768fd25ee763b3d203b9852f269b.tar.gz linux-stable-0ca44fcef241768fd25ee763b3d203b9852f269b.tar.bz2 linux-stable-0ca44fcef241768fd25ee763b3d203b9852f269b.zip |
dm: add cond_resched() to dm_wq_work()
Otherwise the while() loop in dm_wq_work() can result in a "dead
loop" on systems that have preemption disabled. This is particularly
problematic on single cpu systems.
Cc: stable@vger.kernel.org
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/md/dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 90b64bfc63b0..15b91959e433 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2570,6 +2570,7 @@ static void dm_wq_work(struct work_struct *work) break; submit_bio_noacct(bio); + cond_resched(); } } |