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Re: [Qemu-block] [PATCH v2 03/17] block: Fix harmless off-by-one in bdrv
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-block] [PATCH v2 03/17] block: Fix harmless off-by-one in bdrv_aligned_preadv() |
Date: |
Mon, 20 Jun 2016 13:12:49 +0100 |
User-agent: |
Mutt/1.6.1 (2016-04-27) |
On Tue, Jun 14, 2016 at 03:30:25PM -0600, Eric Blake wrote:
> If the amount of data to read ends exactly on the total size
> of the bs, then we were wasting time creating a local qiov
> to read the data in preparation for what would normally be
> appending zeroes beyond the end, even though this corner case
> has nothing further to do.
>
> Signed-off-by: Eric Blake <address@hidden>
> Reviewed-by: Kevin Wolf <address@hidden>
>
> ---
> v2: no change, add R-b
> ---
> block/io.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Stefan Hajnoczi <address@hidden>
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- Re: [Qemu-block] [PATCH v2 02/17] block: Document supported flags during bdrv_aligned_preadv(), (continued)
- [Qemu-block] [PATCH v2 01/17] block: Tighter assertions on bdrv_aligned_pwritev(), Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 04/17] nbd: Allow larger requests, Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 03/17] block: Fix harmless off-by-one in bdrv_aligned_preadv(), Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 05/17] nbd: Advertise realistic limits to block layer, Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 11/17] raw-win32: Set request_alignment during .bdrv_refresh_limits(), Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 12/17] block: Set request_alignment during .bdrv_refresh_limits(), Eric Blake, 2016/06/14
- [Qemu-block] [PATCH v2 06/17] iscsi: Advertise realistic limits to block layer, Eric Blake, 2016/06/14