[Qemu-devel] [PATCH 1/9] mirror: fix calling of blk_aio_pwritev/blk_aio_preadv

["Denis V. Lunev" <den@openvz.org>]

4th argument is flags rather than size. Fortunately flags occupies
5 less significant bits and they are always zero due to alignment.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <famz@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
CC: Eric Blake <eblake@redhat.com>
---
 block/mirror.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/block/mirror.c b/block/mirror.c
index 80fd3c7..3760e29 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -156,8 +156,7 @@ static void mirror_read_complete(void *opaque, int ret)
         mirror_iteration_done(op, ret);
         return;
     }
-    blk_aio_pwritev(s->target, op->sector_num * BDRV_SECTOR_SIZE, &op->qiov,
-                    op->nb_sectors * BDRV_SECTOR_SIZE,
+    blk_aio_pwritev(s->target, op->sector_num * BDRV_SECTOR_SIZE, &op->qiov, 0,
                     mirror_write_complete, op);
 }
 
@@ -274,8 +273,7 @@ static int mirror_do_read(MirrorBlockJob *s, int64_t sector_num,
     s->sectors_in_flight += nb_sectors;
     trace_mirror_one_iteration(s, sector_num, nb_sectors);
 
-    blk_aio_preadv(source, sector_num * BDRV_SECTOR_SIZE, &op->qiov,
-                   nb_sectors * BDRV_SECTOR_SIZE,
+    blk_aio_preadv(source, sector_num * BDRV_SECTOR_SIZE, &op->qiov, 0,
                    mirror_read_complete, op);
     return ret;
 }
-- 
2.5.0