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| author | Ingo Molnar <mingo@kernel.org> | 2018-03-20 10:01:37 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-20 10:01:37 +0100 |
| commit | 3eb93ea3272d428aab3c03e2dd272a78a7729ba8 (patch) | |
| tree | 63ca8b7e7feccb109f4b5cb868939da395c7632f /kernel/fork.c | |
| parent | 5927145efd5de71976e62e2822511b13014d7e56 (diff) | |
| parent | 565977a3d929fc4427769117a8ac976ec16776d5 (diff) | |
Merge branch 'x86/mm' into x86/dma, to pick up dependencies
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index be8aa5b98666..e5d9d405ae4e 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -592,7 +592,7 @@ static void check_mm(struct mm_struct *mm) * is dropped: either by a lazy thread or by * mmput. Free the page directory and the mm. */ -static void __mmdrop(struct mm_struct *mm) +void __mmdrop(struct mm_struct *mm) { BUG_ON(mm == &init_mm); mm_free_pgd(mm); @@ -603,18 +603,7 @@ static void __mmdrop(struct mm_struct *mm) put_user_ns(mm->user_ns); free_mm(mm); } - -void mmdrop(struct mm_struct *mm) -{ - /* - * The implicit full barrier implied by atomic_dec_and_test() is - * required by the membarrier system call before returning to - * user-space, after storing to rq->curr. - */ - if (unlikely(atomic_dec_and_test(&mm->mm_count))) - __mmdrop(mm); -} -EXPORT_SYMBOL_GPL(mmdrop); +EXPORT_SYMBOL_GPL(__mmdrop); static void mmdrop_async_fn(struct work_struct *work) { |