mempolicy: rename mpol_copy to mpol_dup

This patch renames mpol_copy() to mpol_dup() because, well, that's what it
does.  Like, e.g., strdup() for strings, mpol_dup() takes a pointer to an
existing mempolicy, allocates a new one and copies the contents.

In a later patch, I want to use the name mpol_copy() to copy the contents from
one mempolicy to another like, e.g., strcpy() does for strings.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 5 insertions, 5 deletions

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index ce2c5b6bf9f8..e9fc1c1ae66c 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1566,15 +1566,15 @@ struct page *alloc_pages_current(gfp_t gfp, unsigned order)
 EXPORT_SYMBOL(alloc_pages_current);
 
 /*
- * If mpol_copy() sees current->cpuset == cpuset_being_rebound, then it
+ * If mpol_dup() sees current->cpuset == cpuset_being_rebound, then it
  * rebinds the mempolicy its copying by calling mpol_rebind_policy()
  * with the mems_allowed returned by cpuset_mems_allowed().  This
  * keeps mempolicies cpuset relative after its cpuset moves.  See
  * further kernel/cpuset.c update_nodemask().
  */
 
-/* Slow path of a mempolicy copy */
-struct mempolicy *__mpol_copy(struct mempolicy *old)
+/* Slow path of a mempolicy duplicate */
+struct mempolicy *__mpol_dup(struct mempolicy *old)
 {
         struct mempolicy *new = kmem_cache_alloc(policy_cache, GFP_KERNEL);
 
diff --git a/mm/mmap.c b/mm/mmap.c
index 36c85e04fa93..677d184b0d42 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1810,7 +1810,7 @@ int split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
                 new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT);
         }
 
-        pol = mpol_copy(vma_policy(vma));
+        pol = mpol_dup(vma_policy(vma));
         if (IS_ERR(pol)) {
                 kmem_cache_free(vm_area_cachep, new);
                 return PTR_ERR(pol);
@@ -2126,7 +2126,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
                 new_vma = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
                 if (new_vma) {
                         *new_vma = *vma;
-                        pol = mpol_copy(vma_policy(vma));
+                        pol = mpol_dup(vma_policy(vma));
                         if (IS_ERR(pol)) {
                                 kmem_cache_free(vm_area_cachep, new_vma);
                                 return NULL;