From: Christoph Hellwig <hch@lst.de>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: aliguori@us.ibm.com, qemu-stable@nongnu.org,
Anthony Liguori <anthony@codemonkey.ws>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PULL 0/2] xen_disk: use NATIVE_AIO and NOCACHE
Date: Tue, 27 Mar 2012 18:11:23 +0200 [thread overview]
Message-ID: <20120327161123.GA32116@lst.de> (raw)
In-Reply-To: <alpine.DEB.2.00.1203271645570.15151@kaball-desktop>
On Tue, Mar 27, 2012 at 04:48:19PM +0100, Stefano Stabellini wrote:
> Anthony,
> please pull this small patch series that allows xen_disk to be used
> correctly with NATIVE_AIO and O_DIRECT.
>
> This series should be backported to the stable branch too.
Any plans to add BLKIF_OP_FLUSH_DISKCACHE support to xen_disk? Unlike
the old bnroken Xen barrier scheme this actually implements pure flushes
for fdatasync or blockdevice O_SYNC I/O corectly, and for modern Linux
kernels it actually will be quite a bit faster, too.
next prev parent reply other threads:[~2012-03-27 16:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-27 15:48 [Qemu-devel] [PULL 0/2] xen_disk: use NATIVE_AIO and NOCACHE Stefano Stabellini
2012-03-27 15:50 ` [Qemu-devel] [PATCH 1/2] xen_disk: open disk with BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NATIVE_AIO Stefano Stabellini
2012-03-27 15:50 ` [Qemu-devel] [PATCH 2/2] xen_disk: when using AIO flush after the operation is completed Stefano Stabellini
2012-03-27 16:11 ` Christoph Hellwig [this message]
2012-03-27 16:20 ` [Qemu-devel] [PULL 0/2] xen_disk: use NATIVE_AIO and NOCACHE Stefano Stabellini
2012-03-30 13:12 ` Anthony Liguori
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