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Re: [Qemu-devel] [PATCH 03/27] block/parallels: switch to bdrv_read


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH 03/27] block/parallels: switch to bdrv_read
Date: Thu, 23 Apr 2015 09:48:32 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, Apr 22, 2015 at 03:30:50PM +0300, Denis V. Lunev wrote:
> On 22/04/15 15:23, Stefan Hajnoczi wrote:
> >On Wed, Mar 11, 2015 at 01:27:57PM +0300, Denis V. Lunev wrote:
> >>From: Roman Kagan <address@hidden>
> >>
> >>Switch the .bdrv_read method implementation from using bdrv_pread() to
> >>bdrv_read() on the underlying file, since the latter is subject to i/o
> >>throttling while the former is not.
> >>
> >>Besides, since bdrv_read() operates in sectors rather than bytes, adjust
> >>the helper functions to do so too.
> >Can this patch be dropped since "[PATCH 06/27] block/parallels: provide
> >_co_readv routine for parallels format driver" switches to
> >.bdrv_co_readv() anyway?
> >
> >Stefan
> this is not that easy. This patch changes seek_to_sector call and
> in reality to drop it I have to merge patches 3, 4 and 6.
> Besides that this patch has been written by my colleague and
> I feel comfortable to preserve original Signed-off-by of him.

I understand.

Stefan

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