| Message ID | 20170808084548.18963-5-ming.lei@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Can we just add a bio_first_page macro that always return the first page in the bio?
diff --git a/mm/page_io.c b/mm/page_io.c index b6c4ac388209..11c6f4a9a25b 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -43,6 +43,7 @@ static struct bio *get_swap_bio(gfp_t gfp_flags, void end_swap_bio_write(struct bio *bio) { + /* single page bio, safe for multipage bvec */ struct page *page = bio->bi_io_vec[0].bv_page; if (bio->bi_status) { @@ -116,6 +117,7 @@ static void swap_slot_free_notify(struct page *page) static void end_swap_bio_read(struct bio *bio) { + /* single page bio, safe for multipage bvec */ struct page *page = bio->bi_io_vec[0].bv_page; struct task_struct *waiter = bio->bi_private;
Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org Signed-off-by: Ming Lei <ming.lei@redhat.com> --- mm/page_io.c | 2 ++ 1 file changed, 2 insertions(+)