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Subject[PATCH 17/60] kernel/power/swap.c: comment on direct access to bvec table
Date
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
kernel/power/swap.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index a3b1e617bcdc..8bc13a4461bc 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -238,6 +238,8 @@ static void hib_init_batch(struct hib_bio_batch *hb)
static void hib_end_io(struct bio *bio)
{
struct hib_bio_batch *hb = bio->bi_private;
+
+ /* single page bio, safe for multipage bvec */
struct page *page = bio->bi_io_vec[0].bv_page;

if (bio->bi_error) {
--
2.7.4
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