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dm-delay: fix max_delay calculations

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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: 70bbeb29fa ("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>
This commit is contained in:
Benjamin Marzinski 2024-05-06 17:55:44 -04:00 committed by Mike Snitzer
parent d14646f233
commit 64eb88d6ca
1 changed files with 2 additions and 3 deletions
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5
drivers/md/dm-delay.c
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@ -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;
}