Commit 8d30cc05 authored Apr 21, 2020 by hyeongseok.kim Committed by Paul Lawrence Apr 24, 2020

ANDROID: dm-bow: Fix not to skip trim at framented range



If free blocks hole is smaller than discard_granularity,
TRIM to this range can be skipped.
Fix this by changing the granularity to 4kb at dm-bow layer,
not to skip TRIM to every tiny free blocks.

Bug: 154411183
Signed-off-by: hyeongseok.kim <hyeongseok@gmail.com>
Cc: hyeongseok.kim <hyeongseok.kim@lge.com>
Change-Id: Ic7c33d94a016d0ad5a75514eae1056c328c9c1ba
(cherry picked from commit ca986e448cf2f92f1bb672fe9bc0b651fa6b76c5)
Signed-off-by: Paul Lawrence <paullawrence@google.com>

parent a531490d

drivers/md/dm-bow.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -657,6 +657,7 @@ static int dm_bow_ctr(struct dm_target ti, unsigned int argc, char *argv)
		bc->dev->bdev->bd_queue->limits.max_discard_sectors = 1 << 15;
		bc->forward_trims = false;
		} else {
		bc->dev->bdev->bd_queue->limits.discard_granularity = 1 << 12;
		bc->forward_trims = true;
		}