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-rw-r--r--include/linux/blkdev.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 22cfba64ce81..0deed7274a7f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -815,7 +815,8 @@ static inline bool rq_mergeable(struct request *rq)
static inline bool blk_write_same_mergeable(struct bio *a, struct bio *b)
{
- if (bio_data(a) == bio_data(b))
+ if (bio_page(a) == bio_page(b) &&
+ bio_offset(a) == bio_offset(b))
return true;
return false;