From: Christoph Hellwig <hch@lst.de>
To: Kevin Wolf <kwolf@redhat.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Christoph Hellwig <hch@lst.de>,
Frediano Ziglio <freddy77@gmail.com>
Subject: Re: [Qemu-devel] [PATCH 1/2] linux aio: support flush operation
Date: Fri, 29 Jul 2011 16:24:14 +0200 [thread overview]
Message-ID: <20110729142414.GA7665@lst.de> (raw)
In-Reply-To: <4E3158DE.2010404@redhat.com>
On Thu, Jul 28, 2011 at 02:41:02PM +0200, Kevin Wolf wrote:
> > More or less. There's one corner case for all Linux I/O, and that is
> > only writes up to INT_MAX are supported, and larger writes (and reads)
> > get truncated to it. It's pretty nasty, but Linux has been vocally
> > opposed to fixing this issue.
>
> I think we can safely ignore this. So just replacing the current
> ret = -EINVAL; by a memset(buf + ret, 0, len - ret); ret = 0; should be
> okay, right? (Of course using the qiov versions, but you get the idea)
This should be safe.
next prev parent reply other threads:[~2011-07-29 14:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-27 18:25 [Qemu-devel] [PATCH 0/2] improve Linux AIO support Frediano Ziglio
2011-07-27 18:25 ` [Qemu-devel] [PATCH 1/2] linux aio: support flush operation Frediano Ziglio
2011-07-27 18:31 ` Christoph Hellwig
2011-07-27 19:52 ` Frediano Ziglio
2011-07-27 19:57 ` Christoph Hellwig
2011-07-28 7:47 ` Kevin Wolf
2011-07-28 12:15 ` Christoph Hellwig
2011-07-28 12:41 ` Kevin Wolf
2011-07-29 14:24 ` Christoph Hellwig [this message]
2011-07-29 15:33 ` Stefan Hajnoczi
2011-07-27 18:25 ` [Qemu-devel] [PATCH 2/2] aio: use Linux AIO even if nocache is not specified Frediano Ziglio
2011-07-27 18:32 ` Christoph Hellwig
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