6.8-stable review patch. If anyone has any objections, please let me know.
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From: Benjamin Marzinski bmarzins@redhat.com
[ Upstream commit 64eb88d6caee2c8eb806a68dab3f184f14f818a4 ]
delay_ctr() pointlessly compared max_delay in cases where multiple delay classes were initialized identically. Also, when write delays were configured different than read delays, delay_ctr() never compared their value against max_delay. Fix these issues.
Fixes: 70bbeb29fab0 ("dm delay: for short delays, use kthread instead of timers and wq") Signed-off-by: Benjamin Marzinski bmarzins@redhat.com Signed-off-by: Mike Snitzer snitzer@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-delay.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c index 4ba12d5369949..2ac43d1f1b92c 100644 --- a/drivers/md/dm-delay.c +++ b/drivers/md/dm-delay.c @@ -242,19 +242,18 @@ static int delay_ctr(struct dm_target *ti, unsigned int argc, char **argv) ret = delay_class_ctr(ti, &dc->flush, argv); if (ret) goto bad; - max_delay = max(max_delay, dc->write.delay); - max_delay = max(max_delay, dc->flush.delay); goto out; }
ret = delay_class_ctr(ti, &dc->write, argv + 3); if (ret) goto bad; + max_delay = max(max_delay, dc->write.delay); + if (argc == 6) { ret = delay_class_ctr(ti, &dc->flush, argv + 3); if (ret) goto bad; - max_delay = max(max_delay, dc->flush.delay); goto out; }