From: Christoph Hellwig <hch@lst.de>
To: "Leonardo E. Reiter" <lreiter@vbridges.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>,
QEMU Developers Mailing List <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [PATCH 1/5] block: Virtual Bridges VERDE GOW disk image format documentation
Date: Sat, 24 Mar 2012 16:43:33 +0100 [thread overview]
Message-ID: <20120324154333.GH13014@lst.de> (raw)
In-Reply-To: <CA+BHXk+eb=Sm9RC17HJGROBsgyNGMaQRYNXF-5fqC+27Xbt26g@mail.gmail.com>
On Sun, Mar 11, 2012 at 04:03:01PM -0500, Leonardo E. Reiter wrote:
> indeed mmap() is used in the code. This is unfortunate that it cannot be
> used. It's a really high performance way to achieve what we want here, and
> very safe for the use-case. Of course the only medium we support in the
> product that uses this is filesystem, so I see your point. I'll see about
> using some different mechanism.
using shared writeable mmaps for disk I/O is never a safe approach, as
there is no way for sane error handling.
prev parent reply other threads:[~2012-03-24 15:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-08 22:13 [Qemu-devel] [PATCH 1/5] block: Virtual Bridges VERDE GOW disk image format documentation Leonardo E. Reiter
2012-03-09 10:50 ` Stefan Hajnoczi
2012-03-11 21:03 ` Leonardo E. Reiter
2012-03-24 15:43 ` Christoph Hellwig [this message]
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