[Xen-devel] [PATCH 7 of 12] backport c240b9af599d20e06a58090366be682684bd8555

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Backport c240b9af599d20e06a58090366be682684bd8555 from qemu upstream:

Fix vectored aio bounce handling immediate errors (Avi Kivity)

---

diff -r 1a457d3e3071 block.c
--- a/block.c   Fri Oct 02 13:38:46 2009 +0100
+++ b/block.c   Fri Oct 02 13:39:04 2009 +0100
@@ -1414,6 +1414,11 @@
         s->aiocb = bdrv_aio_read(bs, sector_num, s->bounce, nb_sectors,
                                  bdrv_aio_rw_vector_cb, s);
     }
+    if (!s->aiocb) {
+        qemu_vfree(s->bounce);
+        qemu_aio_release(s);
+        return NULL;
+    }
     return &s->common;
 }
 

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