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From: Alex Elder <elder@dreamhost.com>
To: Jan Kara <jack@suse.cz>
Cc: LKML <linux-kernel@vger.kernel.org>,
	linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Eric Sandeen <sandeen@redhat.com>,
	Dave Chinner <david@fromorbit.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 09/11] sysfs: Push file_update_time() into bin_page_mkwrite()
Date: Thu, 16 Feb 2012 13:04:44 -0600	[thread overview]
Message-ID: <1329419084.3121.39.camel@doink> (raw)
In-Reply-To: <1329399979-3647-10-git-send-email-jack@suse.cz>

On Thu, 2012-02-16 at 14:46 +0100, Jan Kara wrote:
> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Jan Kara <jack@suse.cz>
> ---
>  fs/sysfs/bin.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c
> index a475983..6ceb16f 100644
> --- a/fs/sysfs/bin.c
> +++ b/fs/sysfs/bin.c
> @@ -225,6 +225,8 @@ static int bin_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
>  	if (!sysfs_get_active(attr_sd))
>  		return VM_FAULT_SIGBUS;
>  
> +	file_update_time(file);
> +
>  	ret = 0;
>  	if (bb->vm_ops->page_mkwrite)
>  		ret = bb->vm_ops->page_mkwrite(vma, vmf);

If the filesystem's page_mkwrite() function is responsible
for updating the time, can't the call to file_update_time()
here be conditional?

I.e:
	ret = 0;
	if (bb->vm_ops->page_mkwrite)
 		ret = bb->vm_ops->page_mkwrite(vma, vmf);
	else
		file_update_time(file);

					-Alex





  parent reply	other threads:[~2012-02-16 19:04 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-16 13:46 [PATCH 00/11] Push file_update_time() into .page_mkwrite Jan Kara
2012-02-16 13:46 ` [PATCH 01/11] perf: Push file_update_time() into perf_mmap_fault() Jan Kara
2012-02-16 13:50   ` Peter Zijlstra
2012-02-20 22:33     ` Jan Kara
2012-02-16 13:46 ` [PATCH 02/11] fb_defio: Push file_update_time() into fb_deferred_io_mkwrite() Jan Kara
2012-02-16 13:46 ` [PATCH 03/11] fs: Push file_update_time() into __block_page_mkwrite() Jan Kara
2012-02-16 13:46 ` [PATCH 04/11] ceph: Push file_update_time() into ceph_page_mkwrite() Jan Kara
2012-02-16 19:04   ` Alex Elder
2012-02-16 19:13     ` Sage Weil
2012-02-20 22:42       ` Jan Kara
2012-02-20 22:57         ` Sage Weil
2012-02-20 11:06     ` Jan Kara
2012-02-16 13:46 ` [PATCH 05/11] cifs: Push file_update_time() into cifs_page_mkwrite() Jan Kara
2012-02-16 13:46 ` [PATCH 06/11] 9p: Push file_update_time() into v9fs_vm_page_mkwrite() Jan Kara
2012-02-16 13:46 ` [PATCH 07/11] fuse: Push file_update_time() into fuse_page_mkwrite() Jan Kara
2012-02-16 13:46 ` [PATCH 08/11] gfs2: Push file_update_time() into gfs2_page_mkwrite() Jan Kara
2012-02-16 16:47   ` Steven Whitehouse
2012-02-16 13:46 ` [PATCH 09/11] sysfs: Push file_update_time() into bin_page_mkwrite() Jan Kara
2012-02-16 16:24   ` Greg Kroah-Hartman
2012-02-16 19:04   ` Alex Elder [this message]
2012-02-20 11:00     ` Jan Kara
2012-02-29 17:46       ` Eric W. Biederman
2012-02-16 13:46 ` [PATCH 10/11] nfs: Push file_update_time() into nfs_vm_page_mkwrite() Jan Kara
2012-02-16 13:50   ` Myklebust, Trond
2012-02-20 22:32     ` Jan Kara
2012-02-16 13:46 ` [PATCH 11/11] mm: Update file times from fault path only if .page_mkwrite is not set Jan Kara

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