Re: [Qemu-devel] [PATCH v3] block/vdi: Add locking for parallel requests

[Kevin Wolf <kwolf@redhat.com>]

Am 27.02.2015 um 20:54 hat Max Reitz geschrieben:
> When allocating a new cluster, the first write to it must be the one
> doing the allocation, because that one pads its write request to the
> cluster size; if another write to that cluster is executed before it,
> that write will be overwritten due to the padding.
> 
> See https://bugs.launchpad.net/qemu/+bug/1422307 for what can go wrong
> without this patch.
> 
> Cc: qemu-stable <qemu-stable@nongnu.org>
> Signed-off-by: Max Reitz <mreitz@redhat.com>
> ---
> v3: Hopefully finally found the real issue which causes the problems
>     described in the bug report; at least it sounds very reasonable and
>     I can no longer reproduce any of the issues described there.
>     Thank you, Paolo and Stefan!

Thanks, applied to the block branch.

Kevin