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futex: reduce mmap_sem usage
authorPeter Zijlstra <a.p.zijlstra@chello.nl>
Fri, 26 Sep 2008 17:32:21 +0000 (19:32 +0200)
committerIngo Molnar <mingo@elte.hu>
Tue, 30 Sep 2008 10:35:36 +0000 (12:35 +0200)
now that we rely on get_user_pages() for the shared key handling
move all the mmap_sem stuff closely around the slow paths.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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