we want to skip the logical block which is partially covered by
the discard bio, so check the remaining size and subtract it if
there is a need to goto the next logical block.
This patch corrects the offset usage in zram_bio_discard.
Signed-off-by: Weijie Yang <weijie.y...@samsung.com>
---
drivers/block/zram/zram_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 9849b52..48eccb3 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -572,10 +572,10 @@ static void zram_bio_discard(struct zram *zram, u32 index,
* skipping this logical block is appropriate here.
*/
if (offset) {
- if (n < offset)
+ if (n <= (PAGE_SIZE - offset))
return;
- n -= offset;
+ n -= (PAGE_SIZE - offset);
index++;
}
--
1.7.10.4
--
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