From: Peter Zijlstra <a.p.zijlstra@chello.nl>
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>, Ingo Molnar <mingo@elte.hu>,
Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [PATCH 01/11] perf: Push file_update_time() into perf_mmap_fault()
Date: Thu, 16 Feb 2012 14:50:47 +0100 [thread overview]
Message-ID: <1329400247.2293.219.camel@twins> (raw)
In-Reply-To: <1329399979-3647-2-git-send-email-jack@suse.cz>
On Thu, 2012-02-16 at 14:46 +0100, Jan Kara wrote:
> CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
> CC: Ingo Molnar <mingo@elte.hu>
> CC: Paul Mackerras <paulus@samba.org>
> CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
> Signed-off-by: Jan Kara <jack@suse.cz>
> ---
> kernel/events/core.c | 4 +++-
> 1 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/kernel/events/core.c b/kernel/events/core.c
> index ba36013..61a67f3 100644
> --- a/kernel/events/core.c
> +++ b/kernel/events/core.c
> @@ -3316,8 +3316,10 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
> int ret = VM_FAULT_SIGBUS;
>
> if (vmf->flags & FAULT_FLAG_MKWRITE) {
> - if (vmf->pgoff == 0)
> + if (vmf->pgoff == 0) {
> ret = 0;
> + file_update_time(vma->vm_file);
> + }
> return ret;
> }
Its an anon filedesc, there's no actual file and while I guess one could
probably call fstat() on it, people really shouldn't care.
So feel free to introduce this patch to the bitbucket.
next prev parent reply other threads:[~2012-02-16 13:51 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 [this message]
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
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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