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futex: rely on get_user_pages() for shared futexes

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On the way of getting rid of the mmap_sem requirement for shared futexes,
start by relying on get_user_pages().

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>
This commit is contained in:
Peter Zijlstra
2008-09-26 19:32:20 +02:00
committed by Ingo Molnar
parent 94aca1dac6
commit 38d47c1b70
2 changed files with 82 additions and 82 deletions
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2
include/linux/futex.h
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@ -164,6 +164,8 @@ union futex_key {
} both;
};
#define FUTEX_KEY_INIT (union futex_key) { .both = { .ptr = NULL } }
#ifdef CONFIG_FUTEX
extern void exit_robust_list(struct task_struct *curr);
extern void exit_pi_state_list(struct task_struct *curr);