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Commit 3b46b2cb authored by Mike Snitzer's avatar Mike Snitzer Committed by Greg Kroah-Hartman
Browse files

dm thin: add cond_resched() to various workqueue loops 



[ Upstream commit e4f80303c2353952e6e980b23914e4214487f2a6 ]

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

Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 2c055b6a

drivers/md/dm-thin.c

+2 −0
Original line number Diff line number Diff line
@@ -2224,6 +2224,7 @@ 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);

}
@@ -2307,6 +2308,7 @@ static void process_thin_deferred_cells(struct thin_c *tc) 
			else

				pool->process_cell(tc, cell);

		}

		cond_resched();

	} while (!list_empty(&cells));

}