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Re: [Qemu-devel] [PATCH] vmdk: Leave bdi intact if -ENOTSUP in vmdk_get_


From: Fam Zheng
Subject: Re: [Qemu-devel] [PATCH] vmdk: Leave bdi intact if -ENOTSUP in vmdk_get_info
Date: Mon, 17 Nov 2014 10:14:04 +0800
User-agent: Mutt/1.5.23 (2014-03-12)

On Fri, 11/14 09:29, Stefan Hajnoczi wrote:
> On Fri, Nov 14, 2014 at 12:09:21PM +0800, Fam Zheng wrote:
> > When extent types don't match, we return -ENOTSUP. In this case, be
> > polite to the caller and don't modify bdi.
> > 
> > Signed-off-by: Fam Zheng <address@hidden>
> > ---
> >  block/vmdk.c | 20 +++++++++++++-------
> >  1 file changed, 13 insertions(+), 7 deletions(-)
> 
> At this stage of the release process it would be very helpful to include
> some context for this patch: is it a pure cleanup or actually a bug fix
> that needs to go into QEMU 2.2?

This one is more of a cleanup than bug fix: although there is a small logical
change, it's only visible to user on abnormally structured VMDK (mixed extent
type, etc.) that require manual editing image file, which is AFAIK not a valid
use case and will not cause anything worse than an error. I sent the patch
mostly for the function semantic purpose: don't change caller's data unless
it's necessary to.

> 
> Since you are a regular contributor and I therefore trust you, I have
> merged this patch.  But please be clear in commit descriptions about
> whether or not a patch is a bug fix (how to reproduce the bug, if a
> previous commit's regression is being fixed, etc).

OK. I'll remember next time. Thanks for pointing out.

Fam



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