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authorRik van Riel <riel@redhat.com>2010-08-10 04:18:38 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-10 07:44:55 +0400
commitcba48b98f2348c814316c4b4f411a07a0e4a2bf9 (patch)
tree49c0426f8d41cb147722305c2c3495dd515c3253 /mm/ksm.c
parentbb4a340e075b7897ece109686bfa177f8518d2db (diff)
downloadlinux-cba48b98f2348c814316c4b4f411a07a0e4a2bf9.tar.xz
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/ksm.c')
-rw-r--r--mm/ksm.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/mm/ksm.c b/mm/ksm.c
index 6c3e99b4ae7c..eb9f6806ed51 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -327,7 +327,7 @@ static void drop_anon_vma(struct rmap_item *rmap_item)
if (atomic_dec_and_lock(&anon_vma->external_refcount, &anon_vma->lock)) {
int empty = list_empty(&anon_vma->head);
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
if (empty)
anon_vma_free(anon_vma);
}
@@ -1566,7 +1566,7 @@ again:
struct anon_vma_chain *vmac;
struct vm_area_struct *vma;
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
vma = vmac->vma;
if (rmap_item->address < vma->vm_start ||
@@ -1589,7 +1589,7 @@ again:
if (!search_new_forks || !mapcount)
break;
}
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
if (!mapcount)
goto out;
}
@@ -1619,7 +1619,7 @@ again:
struct anon_vma_chain *vmac;
struct vm_area_struct *vma;
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
vma = vmac->vma;
if (rmap_item->address < vma->vm_start ||
@@ -1637,11 +1637,11 @@ again:
ret = try_to_unmap_one(page, vma,
rmap_item->address, flags);
if (ret != SWAP_AGAIN || !page_mapped(page)) {
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
goto out;
}
}
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
}
if (!search_new_forks++)
goto again;
@@ -1671,7 +1671,7 @@ again:
struct anon_vma_chain *vmac;
struct vm_area_struct *vma;
- spin_lock(&anon_vma->lock);
+ anon_vma_lock(anon_vma);
list_for_each_entry(vmac, &anon_vma->head, same_anon_vma) {
vma = vmac->vma;
if (rmap_item->address < vma->vm_start ||
@@ -1688,11 +1688,11 @@ again:
ret = rmap_one(page, vma, rmap_item->address, arg);
if (ret != SWAP_AGAIN) {
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
goto out;
}
}
- spin_unlock(&anon_vma->lock);
+ anon_vma_unlock(anon_vma);
}
if (!search_new_forks++)
goto again;