diff mbox

[RFC,5/5] qcow: small optimization initializing QCowAIOCB

Message ID 1311170189-29734-6-git-send-email-freddy77@gmail.com
State New
Headers show

Commit Message

Frediano Ziglio July 20, 2011, 1:56 p.m. UTC 
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
 block/qcow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/block/qcow.c b/block/qcow.c
index 007fb57..8fd1ee5 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -499,7 +499,6 @@  static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs,
         int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
         int is_write, QCowAIOCB *acb)
 {
-    memset(acb, 0, sizeof(*acb));
     acb->bs = bs;
     acb->sector_num = sector_num;
     acb->qiov = qiov;
@@ -509,6 +508,7 @@  static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs,
         if (is_write)
             qemu_iovec_to_buffer(qiov, acb->buf);
     } else {
+        acb->orig_buf = NULL;
         acb->buf = (uint8_t *)qiov->iov->iov_base;
     }
     acb->nb_sectors = nb_sectors;