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[PATCH v1 03/54] kernel/power/swap.c: comment on direct access to bvec table

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  [PATCH v1 03/54] kernel/power/swap.c: comment on direct access to bvec table Ming Lei <tom.leiming@gmail.com> - 2016-12-27 17:10 +0100

#1547646 — [PATCH v1 03/54] kernel/power/swap.c: comment on direct access to bvec table

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 32e0c232efba..031e709c9fc4 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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