linux-kernel - Re: [PATCH 4/9] cifs: Push file_update_time() into cifs_page

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Date:	Thu, 1 Mar 2012 13:30:35 +0100
From:	Jan Kara <jack@...e.cz>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	linux-mm@...ck.org, LKML <linux-kernel@...r.kernel.org>,
	Al Viro <viro@...IV.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, dchinner@...hat.com,
	Steve French <sfrench@...ba.org>, linux-cifs@...r.kernel.org
Subject: Re: [PATCH 4/9] cifs: Push file_update_time() into
 cifs_page_mkwrite()

On Thu 01-03-12 07:25:37, Jeff Layton wrote:
> On Thu,  1 Mar 2012 12:41:38 +0100
> Jan Kara <jack@...e.cz> wrote:
> 
> > CC: Steve French <sfrench@...ba.org>
> > CC: linux-cifs@...r.kernel.org
> > Signed-off-by: Jan Kara <jack@...e.cz>
> > ---
> >  fs/cifs/file.c |    3 +++
> >  1 files changed, 3 insertions(+), 0 deletions(-)
> > 
> > diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> > index 4dd9283..8e3b23b 100644
> > --- a/fs/cifs/file.c
> > +++ b/fs/cifs/file.c
> > @@ -2425,6 +2425,9 @@ cifs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
> >  {
> >  	struct page *page = vmf->page;
> >  
> > +	/* Update file times before taking page lock */
> > +	file_update_time(vma->vm_file);
> > +
> >  	lock_page(page);
> >  	return VM_FAULT_LOCKED;
> >  }
> 
> Sorry, I meant to comment on this earlier...
> 
> I think we can probably drop this patch. cifs doesn't currently set
> S_NOCMTIME on all inodes (only when MS_NOATIME is set currently), but I
> think that it probably should. Timestamps should be the purview of the
> server.
  OK, thanks for letting me know. Patch dropped.

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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