Messages in this thread Patch in this message |  | | From | Yuanhan Liu <> | Subject | [PATCH 4/4] mm/rmap.c: move anon_vma initialization code into anon_vma_ctor | Date | Fri, 1 Nov 2013 15:54:27 +0800 |
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Cc: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Rik van Riel <riel@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michel Lespinasse <walken@google.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> --- mm/rmap.c | 23 +++++++++-------------- 1 files changed, 9 insertions(+), 14 deletions(-)
diff --git a/mm/rmap.c b/mm/rmap.c index 246b5fe..831dd4e 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -67,19 +67,7 @@ static struct kmem_cache *anon_vma_chain_cachep; static inline struct anon_vma *anon_vma_alloc(void) { - struct anon_vma *anon_vma; - - anon_vma = kmem_cache_alloc(anon_vma_cachep, GFP_KERNEL); - if (anon_vma) { - atomic_set(&anon_vma->refcount, 1); - /* - * Initialise the anon_vma root to point to itself. If called - * from fork, the root will be reset to the parents anon_vma. - */ - anon_vma->root = anon_vma; - } - - return anon_vma; + return kmem_cache_alloc(anon_vma_cachep, GFP_KERNEL); } static inline void anon_vma_free(struct anon_vma *anon_vma) @@ -293,8 +281,15 @@ static void anon_vma_ctor(void *data) struct anon_vma *anon_vma = data; rwlock_init(&anon_vma->rwlock); - atomic_set(&anon_vma->refcount, 0); anon_vma->rb_root = RB_ROOT; + + atomic_set(&anon_vma->refcount, 1); + /* + * Initialise the anon_vma root to point to itself. If called + * from fork, the root will be reset to the parents anon_vma. + */ + anon_vma->root = anon_vma; + } void __init anon_vma_init(void) -- 1.7.7.6
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