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Diffstat (limited to 'drivers/block/brd.c')
-rw-r--r--drivers/block/brd.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index c2e5b2ad88bc..a8730cc4db10 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -297,6 +297,10 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
unsigned int len = bvec.bv_len;
int err;
+ /* Don't support un-aligned buffer */
+ WARN_ON_ONCE((bvec.bv_offset & (SECTOR_SIZE - 1)) ||
+ (len & (SECTOR_SIZE - 1)));
+
err = brd_do_bvec(brd, bvec.bv_page, len, bvec.bv_offset,
bio_op(bio), sector);
if (err)