From: Ming Lei <tom.leiming@gmail.com>
To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
Ming Lei <tom.leiming@gmail.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
"open list:HIBERNATION aka Software Suspend,
aka swsusp" <linux-pm@vger.kernel.org>
Subject: [PATCH 17/60] kernel/power/swap.c: comment on direct access to bvec table
Date: Sat, 29 Oct 2016 16:08:16 +0800 [thread overview]
Message-ID: <1477728600-12938-18-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1477728600-12938-1-git-send-email-tom.leiming@gmail.com>
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
next prev parent reply other threads:[~2016-10-29 8:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-29 8:07 [PATCH 00/60] block: support multipage bvec Ming Lei
2016-10-29 8:08 ` Ming Lei [this message]
2016-10-31 15:25 ` Christoph Hellwig
2016-10-31 22:52 ` Ming Lei
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