Messages in this thread | | | Date | Thu, 03 Jan 2013 00:50:03 -0500 | From | Rik van Riel <> | Subject | Re: [PATCH 8/9] mm: directly use __mlock_vma_pages_range() in find_extend_vma() |
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On 12/20/2012 07:49 PM, Michel Lespinasse wrote: > In find_extend_vma(), we don't need mlock_vma_pages_range() to verify the > vma type - we know we're working with a stack. So, we can call directly > into __mlock_vma_pages_range(), and remove the last make_pages_present() > call site. > > Note that we don't use mm_populate() here, so we can't release the mmap_sem > while allocating new stack pages. This is deemed acceptable, because the > stack vmas grow by a bounded number of pages at a time, and these are > anon pages so we don't have to read from disk to populate them. > > Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
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