Messages in this thread | | | Subject | Re: [PATCH 01/11] perf: Push file_update_time() into perf_mmap_fault() | From | Peter Zijlstra <> | Date | Thu, 16 Feb 2012 14:50:47 +0100 |
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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.
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