[PATCH v1 26/27] kernel/power/swap.c: use bio_get_base_vec()

Ming Lei
2016-04-14T12:04:56Z

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