From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: [PATCH 08/28] mm: Rename drop_anon_vma to put_anon_vma Date: Mon, 07 Jun 2010 13:07:02 +0200 Message-ID: <20100607111407.125772998@chello.nl> References: <20100607110654.606530953@chello.nl> Return-path: Received: from [18.85.46.34] ([18.85.46.34]:37730 "EHLO bombadil.infradead.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756759Ab0FGLU0 (ORCPT ); Mon, 7 Jun 2010 07:20:26 -0400 Content-Disposition: inline; filename=put_anon_vma.patch Sender: linux-arch-owner@vger.kernel.org List-ID: To: Andrea Arcangeli , Avi Kivity , Thomas Gleixner , Rik van Riel , Ingo Molnar , akpm@linux-fou Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Benjamin Herrenschmidt , David Miller , Hugh Dickins , Mel Gorman , Nick Piggin , Peter Zijlstra , "Paul E. McKenney" The normal code pattern used in the kernel is: get/put. Signed-off-by: Peter Zijlstra --- include/linux/rmap.h | 4 ++-- mm/ksm.c | 10 +++++----- mm/migrate.c | 2 +- mm/rmap.c | 4 ++-- 4 files changed, 10 insertions(+), 10 deletions(-) Index: linux-2.6/include/linux/rmap.h =================================================================== --- linux-2.6.orig/include/linux/rmap.h +++ linux-2.6/include/linux/rmap.h @@ -87,7 +87,7 @@ static inline void get_anon_vma(struct a atomic_inc(&anon_vma->external_refcount); } -void drop_anon_vma(struct anon_vma *); +void put_anon_vma(struct anon_vma *); #else static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) { @@ -102,7 +102,7 @@ static inline void get_anon_vma(struct a { } -static inline void drop_anon_vma(struct anon_vma *anon_vma) +static inline void put_anon_vma(struct anon_vma *anon_vma) { } #endif /* CONFIG_KSM */ Index: linux-2.6/mm/ksm.c =================================================================== --- linux-2.6.orig/mm/ksm.c +++ linux-2.6/mm/ksm.c @@ -321,11 +321,11 @@ static void hold_anon_vma(struct rmap_it get_anon_vma(anon_vma); } -static void ksm_drop_anon_vma(struct rmap_item *rmap_item) +static void ksm_put_anon_vma(struct rmap_item *rmap_item) { struct anon_vma *anon_vma = rmap_item->anon_vma; - drop_anon_vma(anon_vma); + put_anon_vma(anon_vma); } /* @@ -410,7 +410,7 @@ static void break_cow(struct rmap_item * * It is not an accident that whenever we want to break COW * to undo, we also need to drop a reference to the anon_vma. */ - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); down_read(&mm->mmap_sem); if (ksm_test_exit(mm)) @@ -465,7 +465,7 @@ static void remove_node_from_stable_tree ksm_pages_sharing--; else ksm_pages_shared--; - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); rmap_item->address &= PAGE_MASK; cond_resched(); } @@ -553,7 +553,7 @@ static void remove_rmap_item_from_tree(s else ksm_pages_shared--; - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); rmap_item->address &= PAGE_MASK; } else if (rmap_item->address & UNSTABLE_FLAG) { Index: linux-2.6/mm/migrate.c =================================================================== --- linux-2.6.orig/mm/migrate.c +++ linux-2.6/mm/migrate.c @@ -683,7 +683,7 @@ rcu_unlock: /* Drop an anon_vma reference if we took one */ if (anon_vma) - drop_anon_vma(anon_vma); + put_anon_vma(anon_vma); if (rcu_locked) rcu_read_unlock(); Index: linux-2.6/mm/rmap.c =================================================================== --- linux-2.6.orig/mm/rmap.c +++ linux-2.6/mm/rmap.c @@ -272,7 +272,7 @@ static void anon_vma_unlink(struct anon_ if (empty) { /* We no longer need the root anon_vma */ - drop_anon_vma(anon_vma->root); + put_anon_vma(anon_vma->root); anon_vma_free(anon_vma); } } @@ -1398,7 +1398,7 @@ int try_to_munlock(struct page *page) * we know we are the last user, nobody else can get a reference and we * can do the freeing without the lock. */ -void drop_anon_vma(struct anon_vma *anon_vma) +void put_anon_vma(struct anon_vma *anon_vma) { if (atomic_dec_and_lock(&anon_vma->external_refcount, &anon_vma->root->lock)) { struct anon_vma *root = anon_vma->root; From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from [18.85.46.34] ([18.85.46.34]:37730 "EHLO bombadil.infradead.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756759Ab0FGLU0 (ORCPT ); Mon, 7 Jun 2010 07:20:26 -0400 Message-ID: <20100607111407.125772998@chello.nl> Date: Mon, 07 Jun 2010 13:07:02 +0200 From: Peter Zijlstra Subject: [PATCH 08/28] mm: Rename drop_anon_vma to put_anon_vma References: <20100607110654.606530953@chello.nl> Content-Disposition: inline; filename=put_anon_vma.patch Sender: linux-arch-owner@vger.kernel.org List-ID: To: Andrea Arcangeli , Avi Kivity , Thomas Gleixner , Rik van Riel , Ingo Molnar , akpm@linux-foundation.org, Linus Torvalds Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, Benjamin Herrenschmidt , David Miller , Hugh Dickins , Mel Gorman , Nick Piggin , Peter Zijlstra , "Paul E. McKenney" Message-ID: <20100607110702.ebqEU4GSda8RzS_g0mIQbBNCxIeJ3Uc86vr5qvA9_yg@z> The normal code pattern used in the kernel is: get/put. Signed-off-by: Peter Zijlstra --- include/linux/rmap.h | 4 ++-- mm/ksm.c | 10 +++++----- mm/migrate.c | 2 +- mm/rmap.c | 4 ++-- 4 files changed, 10 insertions(+), 10 deletions(-) Index: linux-2.6/include/linux/rmap.h =================================================================== --- linux-2.6.orig/include/linux/rmap.h +++ linux-2.6/include/linux/rmap.h @@ -87,7 +87,7 @@ static inline void get_anon_vma(struct a atomic_inc(&anon_vma->external_refcount); } -void drop_anon_vma(struct anon_vma *); +void put_anon_vma(struct anon_vma *); #else static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma) { @@ -102,7 +102,7 @@ static inline void get_anon_vma(struct a { } -static inline void drop_anon_vma(struct anon_vma *anon_vma) +static inline void put_anon_vma(struct anon_vma *anon_vma) { } #endif /* CONFIG_KSM */ Index: linux-2.6/mm/ksm.c =================================================================== --- linux-2.6.orig/mm/ksm.c +++ linux-2.6/mm/ksm.c @@ -321,11 +321,11 @@ static void hold_anon_vma(struct rmap_it get_anon_vma(anon_vma); } -static void ksm_drop_anon_vma(struct rmap_item *rmap_item) +static void ksm_put_anon_vma(struct rmap_item *rmap_item) { struct anon_vma *anon_vma = rmap_item->anon_vma; - drop_anon_vma(anon_vma); + put_anon_vma(anon_vma); } /* @@ -410,7 +410,7 @@ static void break_cow(struct rmap_item * * It is not an accident that whenever we want to break COW * to undo, we also need to drop a reference to the anon_vma. */ - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); down_read(&mm->mmap_sem); if (ksm_test_exit(mm)) @@ -465,7 +465,7 @@ static void remove_node_from_stable_tree ksm_pages_sharing--; else ksm_pages_shared--; - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); rmap_item->address &= PAGE_MASK; cond_resched(); } @@ -553,7 +553,7 @@ static void remove_rmap_item_from_tree(s else ksm_pages_shared--; - ksm_drop_anon_vma(rmap_item); + ksm_put_anon_vma(rmap_item); rmap_item->address &= PAGE_MASK; } else if (rmap_item->address & UNSTABLE_FLAG) { Index: linux-2.6/mm/migrate.c =================================================================== --- linux-2.6.orig/mm/migrate.c +++ linux-2.6/mm/migrate.c @@ -683,7 +683,7 @@ rcu_unlock: /* Drop an anon_vma reference if we took one */ if (anon_vma) - drop_anon_vma(anon_vma); + put_anon_vma(anon_vma); if (rcu_locked) rcu_read_unlock(); Index: linux-2.6/mm/rmap.c =================================================================== --- linux-2.6.orig/mm/rmap.c +++ linux-2.6/mm/rmap.c @@ -272,7 +272,7 @@ static void anon_vma_unlink(struct anon_ if (empty) { /* We no longer need the root anon_vma */ - drop_anon_vma(anon_vma->root); + put_anon_vma(anon_vma->root); anon_vma_free(anon_vma); } } @@ -1398,7 +1398,7 @@ int try_to_munlock(struct page *page) * we know we are the last user, nobody else can get a reference and we * can do the freeing without the lock. */ -void drop_anon_vma(struct anon_vma *anon_vma) +void put_anon_vma(struct anon_vma *anon_vma) { if (atomic_dec_and_lock(&anon_vma->external_refcount, &anon_vma->root->lock)) { struct anon_vma *root = anon_vma->root;