From: Mike Snitzer snitzer@kernel.org
[ 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 --- drivers/md/dm-cache-target.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 9b2aec3098010..f98ad4366301b 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -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(); } }