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authorRik van Riel <riel@redhat.com>2010-08-09 17:18:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-09 20:44:55 -0700
commitcba48b98f2348c814316c4b4f411a07a0e4a2bf9 (patch)
tree49c0426f8d41cb147722305c2c3495dd515c3253 /mm/rmap.c
parentbb4a340e075b7897ece109686bfa177f8518d2db (diff)
mm: change direct call of spin_lock(anon_vma->lock) to inline function
Subsitute a direct call of spin_lock(anon_vma->lock) with an inline function doing exactly the same. This makes it easier to do the substitution to the root anon_vma lock in a following patch. We will deal with the handful of special locks (nested, dec_and_lock, etc) separately. Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Tested-by: Larry Woodman <lwoodman@redhat.com> Acked-by: Larry Woodman <lwoodman@redhat.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 38a336e2eea1..b65f00d1707f 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -134,7 +134,7 @@ int anon_vma_prepare(struct vm_area_struct *vma)
allocated = anon_vma;
}
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
/* page_table_lock to protect against threads */
spin_lock(&mm->page_table_lock);
if (likely(!vma->anon_vma)) {
@@ -147,7 +147,7 @@ int anon_vma_prepare(struct vm_area_struct *vma)
avc = NULL;
}
spin_unlock(&mm->page_table_lock);
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
if (unlikely(allocated))
anon_vma_free(allocated);
@@ -170,9 +170,9 @@ static void anon_vma_chain_link(struct vm_area_struct *vma,
avc->anon_vma = anon_vma;
list_add(&avc->same_vma, &vma->anon_vma_chain);
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_add_tail(&avc->same_anon_vma, &anon_vma->head);
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
}
/*
@@ -246,12 +246,12 @@ static void anon_vma_unlink(struct anon_vma_chain *anon_vma_chain)
if (!anon_vma)
return;
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_del(&anon_vma_chain->same_anon_vma);
/* We must garbage collect the anon_vma if it's empty */
empty = list_empty(&anon_vma->head) && !anonvma_external_refcount(anon_vma);
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
if (empty)
anon_vma_free(anon_vma);
@@ -302,7 +302,7 @@ struct anon_vma *page_lock_anon_vma(struct page *page)
goto out;
anon_vma = (struct anon_vma *) (anon_mapping - PAGE_MAPPING_ANON);
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
return anon_vma;
out:
rcu_read_unlock();
@@ -311,7 +311,7 @@ out:
void page_unlock_anon_vma(struct anon_vma *anon_vma)
{
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
rcu_read_unlock();
}
@@ -1389,7 +1389,7 @@ static int rmap_walk_anon(struct page *page, int (*rmap_one)(struct page *,
anon_vma = page_anon_vma(page);
if (!anon_vma)
return ret;
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_for_each_entry(avc, &anon_vma->head, same_anon_vma) {
struct vm_area_struct *vma = avc->vma;
unsigned long address = vma_address(page, vma);
@@ -1399,7 +1399,7 @@ static int rmap_walk_anon(struct page *page, int (*rmap_one)(struct page *,
if (ret != SWAP_AGAIN)
break;
}
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
return ret;
}

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