* [PATCH v3 03/49] kernel/power/swap.c: comment on direct access to bvec table
[not found] <20170808084548.18963-1-ming.lei@redhat.com>
@ 2017-08-08 8:45 ` Ming Lei
0 siblings, 0 replies; only message in thread
From: Ming Lei @ 2017-08-08 8:45 UTC (permalink / raw)
To: Jens Axboe, Christoph Hellwig, Huang Ying, Andrew Morton,
Alexander Viro
Cc: linux-kernel, linux-block, linux-fsdevel, linux-mm, Ming Lei,
Rafael J. Wysocki, linux-pm
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
kernel/power/swap.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 57d22571f306..aa52ccc03fcc 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_status) {
--
2.9.4
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