2016-10-29 08:14:09

by Ming Lei

Subject: [PATCH 18/60] mm: page_io.c: comment on direct access to bvec table

Signed-off-by: Ming Lei <[email protected]>
---
mm/page_io.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/mm/page_io.c b/mm/page_io.c
index a2651f58c86a..b0c0069ec1f4 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -43,6 +43,7 @@ static struct bio *get_swap_bio(gfp_t gfp_flags,

void end_swap_bio_write(struct bio *bio)
{
+ /* single page bio, safe for multipage bvec */
struct page *page = bio->bi_io_vec[0].bv_page;

if (bio->bi_error) {
--
2.7.4