linux-kernel - Re: [PATCH 04/11] ceph: Push file_update_time() into ceph_page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <Pine.LNX.4.64.1202161113001.24079@cobra.newdream.net>
Date:	Thu, 16 Feb 2012 11:13:53 -0800 (PST)
From:	Sage Weil <sage@...dream.net>
To:	Alex Elder <elder@...amhost.com>
cc:	Jan Kara <jack@...e.cz>, LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Sandeen <sandeen@...hat.com>,
	Dave Chinner <david@...morbit.com>, ceph-devel@...r.kernel.org
Subject: Re: [PATCH 04/11] ceph: Push file_update_time() into ceph_page_mkwrite()

On Thu, 16 Feb 2012, Alex Elder wrote:
> On Thu, 2012-02-16 at 14:46 +0100, Jan Kara wrote:
> > CC: Sage Weil <sage@...dream.net>
> > CC: ceph-devel@...r.kernel.org
> > Signed-off-by: Jan Kara <jack@...e.cz>
> 
> 
> This will update the timestamp even if a write
> fault fails, which is different from before.
> 
> Hard to avoid though.
> 
> Looks good to me.

Yeah.  Let's put something in the tracker to take a look later (I think we 
can do better), but this is okay for now.

Signed-off-by: Sage Weil <sage@...dream.net>

> 
> Signed-off-by: Alex Elder <elder@...amhost.com>
> 
> >  fs/ceph/addr.c |    3 +++
> >  1 files changed, 3 insertions(+), 0 deletions(-)
> > 
> > diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> > index 173b1d2..12b139f 100644
> > --- a/fs/ceph/addr.c
> > +++ b/fs/ceph/addr.c
> > @@ -1181,6 +1181,9 @@ static int ceph_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
> >  	loff_t size, len;
> >  	int ret;
> >  
> > +	/* Update time before taking page lock */
> > +	file_update_time(vma->vm_file);
> > +
> >  	size = i_size_read(inode);
> >  	if (off + PAGE_CACHE_SIZE <= size)
> >  		len = PAGE_CACHE_SIZE;
> 
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/