mm: rename page struct field helpers

The function names page_xchg_last_nid(), page_last_nid() and
reset_page_last_nid() were judged to be inconsistent so rename them to a
struct_field_op style pattern.  As it looked jarring to have
reset_page_mapcount() and page_nid_reset_last() beside each other in
memmap_init_zone(), this patch also renames reset_page_mapcount() to
page_mapcount_reset().  There are others like init_page_count() but as
it is used throughout the arch code a rename would likely cause more
conflicts than it is worth.

[akpm@linux-foundation.org: fix zcache]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/slub.c b/mm/slub.c
index ba2ca53f6c3a..ebcc44eb43b9 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1408,7 +1408,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
         __ClearPageSlab(page);
 
         memcg_release_pages(s, order);
-        reset_page_mapcount(page);
+        page_mapcount_reset(page);
         if (current->reclaim_state)
                 current->reclaim_state->reclaimed_slab += pages;
         __free_memcg_kmem_pages(page, order);