[PATCH 17/60] kernel/power/swap.c: comment on direct access to bvec table

From
Ming Lei <tom.leiming@gmail.com>
Date
2016-10-29 08:13:10
Also in
linux-block, linux-fsdevel, lkml
Reply to
Ming Lei, 2016-10-29
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
Thread (4 messages) 4 messages, 2 authors, last reply 2016-10-31
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