loop: fix bad bio_alloc() nr_iovec request

Don't allocate room for an iovec when it is not needed.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 56e23042728a..b8af22e610df 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -610,7 +610,7 @@ static int loop_thread(void *data)
 static int loop_switch(struct loop_device *lo, struct file *file)
 {
         struct switch_request w;
-        struct bio *bio = bio_alloc(GFP_KERNEL, 1);
+        struct bio *bio = bio_alloc(GFP_KERNEL, 0);
         if (!bio)
                 return -ENOMEM;
         init_completion(&w.wait);