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| author | Mike Snitzer <snitzer@kernel.org> | 2023-02-16 15:31:08 -0500 |
|---|---|---|
| committer | Mike Snitzer <snitzer@kernel.org> | 2023-02-17 14:49:12 -0500 |
| commit | 76227f6dc805e9e960128bcc6276647361e0827c (patch) | |
| tree | 0c977877005aeafbc29bb527ea1514b8dc2d25a5 | |
| parent | e4f80303c2353952e6e980b23914e4214487f2a6 (diff) | |
| download | lwn-76227f6dc805e9e960128bcc6276647361e0827c.tar.gz lwn-76227f6dc805e9e960128bcc6276647361e0827c.zip | |
dm cache: add cond_resched() to various workqueue loops
Otherwise on resource constrained systems these workqueues may be too
greedy.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
| -rw-r--r-- | drivers/md/dm-cache-target.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 23195701dc15..dbbcfa580078 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1829,6 +1829,7 @@ static void process_deferred_bios(struct work_struct *ws) else commit_needed = process_bio(cache, bio) || commit_needed; + cond_resched(); } if (commit_needed) @@ -1852,6 +1853,7 @@ 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(); } } @@ -1892,6 +1894,8 @@ static void check_migrations(struct work_struct *ws) r = mg_start(cache, op, NULL); if (r) break; + + cond_resched(); } } |