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dm cache: add cond_resched() to various workqueue loops

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[ Upstream commit 76227f6dc805e9e960128bcc6276647361e0827c ]

Otherwise on resource constrained systems these workqueues may be too
greedy.

Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mike Snitzer 2023-02-16 15:31:08 -05:00 committed by Greg Kroah-Hartman
parent 52206dd1c7
commit 9b8047b210
1 changed files with 4 additions and 0 deletions
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4
drivers/md/dm-cache-target.c
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@ -1883,6 +1883,7 @@ static void process_deferred_bios(struct work_struct *ws)
else
commit_needed = process_bio(cache, bio) || commit_needed;
cond_resched();
}
if (commit_needed)
@ -1905,6 +1906,7 @@ static void requeue_deferred_bios(struct cache *cache)
while ((bio = bio_list_pop(&bios))) {
bio->bi_status = BLK_STS_DM_REQUEUE;
bio_endio(bio);
cond_resched();
}
}
@ -1945,6 +1947,8 @@ static void check_migrations(struct work_struct *ws)
r = mg_start(cache, op, NULL);
if (r)
break;
cond_resched();
}
}