On Thu, 2012-02-16 at 14:46 +0100, Jan Kara wrote:
> CC: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
> CC: Ingo Molnar <mingo@xxxxxxx>
> CC: Paul Mackerras <paulus@xxxxxxxxx>
> CC: Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jan Kara <jack@xxxxxxx>
> ---
> 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.
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