[PATCH AUTOSEL 6.2 55/60] dm thin: add cond_resched() to various workqueue loops

Sasha Levin
2023-02-27T02:07:19Z

From: Mike Snitzer <snitzer@kernel.org>

[ Upstream commit e4f80303c2353952e6e980b23914e4214487f2a6 ]

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-thin.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 64cfcf46881dc..e4c1a8a21bbd0 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2207,6 +2207,7 @@ static void process_thin_deferred_bios(struct thin_c *tc)
throttle_work_update(&pool->throttle);
dm_pool_issue_prefetches(pool->pmd);
}
+ cond_resched();
}
blk_finish_plug(&plug);
}
@@ -2289,6 +2290,7 @@ static void process_thin_deferred_cells(struct thin_c *tc)
else
pool->process_cell(tc, cell);
}
+ cond_resched();
} while (!list_empty(&cells));
}

--
2.39.0