Messages in this thread | | | Date | Tue, 17 May 2016 18:30:44 +0200 | From | Oleg Nesterov <> | Subject | Re: [PATCH v2 1/1] userfaultfd: don't pin the user memory in userfaultfd_file_create() |
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On 05/17, Michal Hocko wrote: > > On Mon 16-05-16 19:22:54, Oleg Nesterov wrote: > > > The patch adds the new trivial helper, mmget_not_zero(), it can have more users. > > Is this really helpful?
Well, this is subjective of course, but I think the code looks a bit better this way. uprobes, fs/proc and more can use this helper too.
And in fact the initial version of this patch did atomic_inc_not_zero(mm->users) by hand, then it was suggested to add a helper.
> > Signed-off-by: Oleg Nesterov <oleg@redhat.com> > > The patch seems good to me but I am not familiar with the userfaultfd > internals enought to give you reviewed-by nor acked-by. I welcome the > change anyway.
Thanks ;)
Oleg.
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