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From: Kevin Wolf <kwolf@redhat.com>
To: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
	qemu-devel@nongnu.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [Qemu-devel] [PATCH 1/2] raw-posix: Use pread/pwrite instead of	lseek+read/write
Date: Tue, 20 Apr 2010 10:37:06 +0200	[thread overview]
Message-ID: <4BCD67B2.4050807@redhat.com> (raw)
In-Reply-To: <1271680452-24121-1-git-send-email-stefanha@linux.vnet.ibm.com>

Am 19.04.2010 14:34, schrieb Stefan Hajnoczi:
> This patch combines the lseek+read/write calls to use pread/pwrite
> instead.  This will result in fewer system calls and is already used by
> AIO.
> 
> Thanks to Jan Kiszka <jan.kiszka@siemens.com> for identifying excessive
> lseek and Christoph Hellwig <hch@lst.de> for confirming that this
> approach should work.
> 
> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Thanks, applied to the block branch.

Kevin

      parent reply	other threads:[~2010-04-20  8:37 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-19 12:34 [Qemu-devel] [PATCH 1/2] raw-posix: Use pread/pwrite instead of lseek+read/write Stefan Hajnoczi
2010-04-19 12:34 ` [Qemu-devel] [PATCH 2/2] block: Cache total_sectors to reduce bdrv_getlength calls Stefan Hajnoczi
2010-04-19 14:10   ` [Qemu-devel] " Kevin Wolf
2010-04-19 14:26     ` Stefan Hajnoczi
2010-04-19 14:31       ` Kevin Wolf
2010-04-20  8:37 ` Kevin Wolf [this message]

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