block: remove bio_get_nr_vecs()

We can always fill up the bio now, no need to estimate the possible
size based on queue parameters.

Acked-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
[hch: rebased and wrote a changelog]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/direct-io.c b/fs/direct-io.c
index 818c647f36d3..11256291642e 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -655,7 +655,7 @@ static inline int dio_new_bio(struct dio *dio, struct dio_submit *sdio,
         if (ret)
                 goto out;
         sector = start_sector << (sdio->blkbits - 9);
-        nr_pages = min(sdio->pages_in_io, bio_get_nr_vecs(map_bh->b_bdev));
+        nr_pages = min(sdio->pages_in_io, BIO_MAX_PAGES);
         BUG_ON(nr_pages <= 0);
         dio_bio_alloc(dio, sdio, map_bh->b_bdev, sector, nr_pages);
         sdio->boundary = 0;