From: Ming Lei <tom.leiming@gmail.com>
To: Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Ming Lei <tom.leiming@gmail.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
"open list:SUSPEND TO RAM" <linux-pm@vger.kernel.org>
Subject: [PATCH v1 26/27] kernel/power/swap.c: use bio_get_base_vec()
Date: Thu, 14 Apr 2016 20:02:44 +0800 [thread overview]
Message-ID: <1460635375-28282-27-git-send-email-tom.leiming@gmail.com> (raw)
In-Reply-To: <1460635375-28282-1-git-send-email-tom.leiming@gmail.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
---
kernel/power/swap.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 12cd989..cedf752 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -230,7 +230,15 @@ 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;
- struct page *page = bio->bi_io_vec[0].bv_page;
+
+ /*
+ * Single bvec bio.
+ *
+ * For accessing page pointed to by the 1st bvec, it
+ * works too after multipage bvecs.
+ */
+ struct bio_vec *bvec = bio_get_base_vec(bio);
+ struct page *page = bvec->bv_page;
if (bio->bi_error) {
printk(KERN_ALERT "Read-error on swap-device (%u:%u:%Lu)\n",
--
1.9.1
prev parent reply other threads:[~2016-04-14 12:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 12:02 [PATCH v1 00/27] block: cleanup direct access to .bi_vcnt & .bi_io_vec Ming Lei
2016-04-14 12:02 ` Ming Lei [this message]
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