Merge branch 'for-linus-1' of git://git.infradead.org/mtd-2.6

[pandora-kernel.git] / mm / ksm.c

diff --git a/mm/ksm.c b/mm/ksm.c
index c2b2a94..1bbe785 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -301,20 +301,6 @@ static inline int in_stable_tree(struct rmap_item *rmap_item)
        return rmap_item->address & STABLE_FLAG;
 }
 
-static void hold_anon_vma(struct rmap_item *rmap_item,
-                         struct anon_vma *anon_vma)
-{
-       rmap_item->anon_vma = anon_vma;
-       get_anon_vma(anon_vma);
-}
-
-static void ksm_drop_anon_vma(struct rmap_item *rmap_item)
-{
-       struct anon_vma *anon_vma = rmap_item->anon_vma;
-
-       drop_anon_vma(anon_vma);
-}
-
 /*
  * ksmd, and unmerge_and_remove_all_rmap_items(), must not touch an mm's
  * page tables after it has passed through ksm_exit() - which, if necessary,
@@ -397,7 +383,7 @@ static void break_cow(struct rmap_item *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);
+       put_anon_vma(rmap_item->anon_vma);
 
        down_read(&mm->mmap_sem);
        if (ksm_test_exit(mm))
@@ -466,7 +452,7 @@ static void remove_node_from_stable_tree(struct stable_node *stable_node)
                        ksm_pages_sharing--;
                else
                        ksm_pages_shared--;
-               ksm_drop_anon_vma(rmap_item);
+               put_anon_vma(rmap_item->anon_vma);
                rmap_item->address &= PAGE_MASK;
                cond_resched();
        }
@@ -554,7 +540,7 @@ static void remove_rmap_item_from_tree(struct rmap_item *rmap_item)
                else
                        ksm_pages_shared--;
 
-               ksm_drop_anon_vma(rmap_item);
+               put_anon_vma(rmap_item->anon_vma);
                rmap_item->address &= PAGE_MASK;
 
        } else if (rmap_item->address & UNSTABLE_FLAG) {
@@ -949,7 +935,8 @@ static int try_to_merge_with_ksm_page(struct rmap_item *rmap_item,
                goto out;
 
        /* Must get reference to anon_vma while still holding mmap_sem */
-       hold_anon_vma(rmap_item, vma->anon_vma);
+       rmap_item->anon_vma = vma->anon_vma;
+       get_anon_vma(vma->anon_vma);
 out:
        up_read(&mm->mmap_sem);
        return err;