From: Eric Blake <eblake@redhat.com>
To: Kevin Wolf <kwolf@redhat.com>, qemu-block@nongnu.org
Cc: pbonzini@redhat.com, mreitz@redhat.com, stefanha@redhat.com,
famz@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 6/6] block: Don't enforce 512 byte minimum alignment
Date: Wed, 8 Jun 2016 10:06:10 -0600 [thread overview]
Message-ID: <57584272.9020101@redhat.com> (raw)
In-Reply-To: <1465395011-26088-7-git-send-email-kwolf@redhat.com>
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On 06/08/2016 08:10 AM, Kevin Wolf wrote:
> If block drivers say that they can do an alignment < 512 bytes, let's
> just suppose they mean it. raw-posix used to be an offender with respect
> to this, but it can actually deal with byte-aligned requests now.
>
> The default is still 512 bytes for any drivers that only implement
> sector-based interfaces, but it is 1 now for drivers that implement
> .bdrv_co_preadv.
>
> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
> ---
> block.c | 2 +-
> block/io.c | 8 +++-----
> 2 files changed, 4 insertions(+), 6 deletions(-)
>
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2016-06-08 16:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 14:10 [Qemu-devel] [PATCH 0/6] block: Enable byte granularity I/O Kevin Wolf
2016-06-08 14:10 ` [Qemu-devel] [PATCH 1/6] block: Byte-based bdrv_co_do_copy_on_readv() Kevin Wolf
2016-06-08 14:25 ` Eric Blake
2016-06-14 12:09 ` Stefan Hajnoczi
2016-06-08 14:10 ` [Qemu-devel] [PATCH 2/6] block: Prepare bdrv_aligned_preadv() for byte-aligned requests Kevin Wolf
2016-06-08 14:33 ` Eric Blake
2016-06-14 12:09 ` Stefan Hajnoczi
2016-06-08 14:10 ` [Qemu-devel] [PATCH 3/6] block: Prepare bdrv_aligned_pwritev() " Kevin Wolf
2016-06-08 14:46 ` Eric Blake
2016-06-14 12:09 ` Stefan Hajnoczi
2016-06-08 14:10 ` [Qemu-devel] [PATCH 4/6] raw-posix: Switch to bdrv_co_* interfaces Kevin Wolf
2016-06-08 15:13 ` Eric Blake
2016-06-14 12:04 ` Stefan Hajnoczi
2016-06-08 14:10 ` [Qemu-devel] [PATCH 5/6] raw-posix: Implement .bdrv_co_preadv/pwritev Kevin Wolf
2016-06-08 15:38 ` Eric Blake
2016-06-14 12:09 ` Stefan Hajnoczi
2016-06-08 14:10 ` [Qemu-devel] [PATCH 6/6] block: Don't enforce 512 byte minimum alignment Kevin Wolf
2016-06-08 16:06 ` Eric Blake [this message]
2016-06-14 12:09 ` Stefan Hajnoczi
2016-06-14 13:04 ` Kevin Wolf
2016-06-13 13:27 ` [Qemu-devel] [PATCH 0/6] block: Enable byte granularity I/O Stefan Hajnoczi
2016-06-13 13:43 ` Kevin Wolf
2016-06-14 8:57 ` Stefan Hajnoczi
2016-06-14 12:10 ` Stefan Hajnoczi
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