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[v2,03/51] kernel/power/swap.c: comment on direct access to bvec table

Message ID 20170626121034.3051-4-ming.lei@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ming Lei June 26, 2017, 12:09 p.m. UTC
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(+)
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Patch

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) {