[PATCH] block: take offset into account in blk_bvec_map_sg again

[Christoph Hellwig <hch@lst.de>]

The rebase of commit 09595e0c9d65 ("block: pass a phys_addr_t to
get_max_segment_size") lost adding the total to to the offset in
blk_bvec_map_sg.  Add it back.

Fixes: 09595e0c9d65 ("block: pass a phys_addr_t to get_max_segment_size")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Reported-by: Chaitanya Kulkarni <chaitanyak@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/blk-merge.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-merge.c b/block/blk-merge.c
index e41ea331809936..048d07a5091f79 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -491,8 +491,8 @@ static unsigned blk_bvec_map_sg(struct request_queue *q,
 
 	while (nbytes > 0) {
 		unsigned offset = bvec->bv_offset + total;
-		unsigned len = get_max_segment_size(&q->limits, bvec_phys(bvec),
-			nbytes);
+		unsigned len = get_max_segment_size(&q->limits,
+				bvec_phys(bvec) + total, nbytes);
 		struct page *page = bvec->bv_page;
 
 		/*
-- 
2.43.0