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From: majianpeng <majianpeng@gmail.com>
To: "Yan, Zheng" <ukernel@gmail.com>
Cc: sage <sage@inktank.com>, ceph-devel <ceph-devel@vger.kernel.org>
Subject: Re: Re: [PATCH] ceph:Update the file time after mmap-write.
Date: Thu, 11 Jul 2013 15:53:53 +0800	[thread overview]
Message-ID: <201307111553503594177@gmail.com> (raw)
In-Reply-To: CAAM7YA=3stCqYppd6YAwk9tC_rHMzraqge_L6gGZkzaG8LH6Ag@mail.gmail.com

>On Thu, Jul 11, 2013 at 9:17 AM, majianpeng <majianpeng@gmail.com> wrote:
>> Although, mmap-write of ceph update the time of file using
>> file_update_time.Because it don't mark the relative cap so the time
>> can't save.
>
>I think cephfs' mmap IO support is still broken. mmap IO does not respect
>ceph capabilities at all. It's possible that the kclient has no Fw cap when
>ceph_page_mkwrite is called.
>
>Yan, Zheng
>
>
Hi Yan,
	For the read of mmap, i think we also add cap-check.
And i think we can rewrite the filemap_fault ect ceph_filemap_fault.
In ceph_filemap_fault, most code from filemap_fault, we only add cap-check for read-operation.
How about this or can you suggest anthor method?

Thanks!
Jianpeng Ma

  parent reply	other threads:[~2013-07-11  7:54 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-11  1:17 [PATCH] ceph:Update the file time after mmap-write majianpeng
2013-07-11  1:42 ` Yan, Zheng
2013-07-11  1:49   ` majianpeng
2013-07-11  7:53   ` majianpeng [this message]
2013-07-11  9:03     ` Yan, Zheng
2013-07-12  2:26       ` majianpeng
2013-07-12  2:46       ` Gregory Farnum
2013-07-12  3:16         ` Yan, Zheng

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