From: Stefan Hajnoczi <stefanha@gmail.com>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: aliguori@us.ibm.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/2] hw/9pfs: Add new virtfs option cache=writethrough to skip host page cache
Date: Sat, 8 Oct 2011 12:24:37 +0100 [thread overview]
Message-ID: <CAJSP0QUA6j4zFwSLMNQL_s_STu1AXa61stW3ZuWUH_GLBirCDQ@mail.gmail.com> (raw)
In-Reply-To: <1317969967-8983-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
On Fri, Oct 7, 2011 at 7:46 AM, Aneesh Kumar K.V
<aneesh.kumar@linux.vnet.ibm.com> wrote:
> cache=writethrough implies the file are opened in the host with O_SYNC open flag
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> ---
> fsdev/file-op-9p.h | 1 +
> fsdev/qemu-fsdev.c | 10 ++++++++--
> fsdev/qemu-fsdev.h | 2 ++
> hw/9pfs/virtio-9p-device.c | 5 +++++
> hw/9pfs/virtio-9p.c | 24 ++++++++++++++++++------
> qemu-config.c | 6 ++++++
> qemu-options.hx | 17 ++++++++++++-----
> vl.c | 6 ++++++
> 8 files changed, 58 insertions(+), 13 deletions(-)
When would this be used? For serving up vanilla 9P?
I think 9P.u and 9P.l have support for fsync(2) while vanilla 9P does not.
Stefan
next prev parent reply other threads:[~2011-10-08 11:24 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-07 6:46 [Qemu-devel] [PATCH 1/2] hw/9pfs: Add new virtfs option cache=writethrough to skip host page cache Aneesh Kumar K.V
2011-10-07 6:46 ` [Qemu-devel] [PATCH 2/2] qemu-options.hx: Update virtfs command documentation Aneesh Kumar K.V
2011-10-08 11:24 ` Stefan Hajnoczi [this message]
2011-10-09 15:34 ` [Qemu-devel] [PATCH 1/2] hw/9pfs: Add new virtfs option cache=writethrough to skip host page cache Aneesh Kumar K.V
2011-10-09 16:16 ` Stefan Hajnoczi
2011-10-09 18:35 ` Aneesh Kumar K.V
2011-10-10 4:54 ` Stefan Hajnoczi
2011-10-10 9:06 ` Aneesh Kumar K.V
2011-10-12 9:55 ` Stefan Hajnoczi
2011-10-12 13:19 ` Aneesh Kumar K.V
2011-10-12 14:32 ` Stefan Hajnoczi
2011-10-12 15:15 ` Aneesh Kumar K.V
2011-10-13 14:45 ` Stefan Hajnoczi
-- strict thread matches above, loose matches on Subject: below --
2011-06-06 17:17 Aneesh Kumar K.V
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