native preadv/pwritev support (Christoph Hellwig)

This ties up the preadv/pwritev syscalls to qemu if they are declared in
unistd.h.  This is the case currently on at least NetBSD and OpenBSD and
will hopefully soon be the case on Linux.

Thanks to Blue Swirl and Gerd Hoffmann for the configure autodetection
of preadv/pwritev.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7021 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 1 insertions, 2 deletions

diff --git a/block.c b/block.c
index 8a78f14ed..74d19ad28 100644
--- a/block.c
+++ b/block.c
@@ -1354,10 +1354,9 @@ static void bdrv_aio_bh_cb(void *opaque)
 {
     BlockDriverAIOCBSync *acb = opaque;
 
-    qemu_vfree(acb->bounce);
-
     if (!acb->is_write)
         qemu_iovec_from_buffer(acb->qiov, acb->bounce, acb->qiov->size);
+    qemu_vfree(acb->bounce);
     acb->common.cb(acb->common.opaque, acb->ret);
 
     qemu_aio_release(acb);