mm, page_alloc: un-inline the bad part of free_pages_check

From: Vlastimil Babka <vbabka@suse.cz>

!DEBUG_VM size and bloat-o-meter:

  add/remove: 1/0 grow/shrink: 0/2 up/down: 124/-370 (-246)
  function                                     old     new   delta
  free_pages_check_bad                           -     124    +124
  free_pcppages_bulk                          1288    1171    -117
  __free_pages_ok                              948     695    -253

DEBUG_VM:

  add/remove: 1/0 grow/shrink: 0/1 up/down: 124/-214 (-90)
  function                                     old     new   delta
  free_pages_check_bad                           -     124    +124
  free_pages_prepare                          1112     898    -214

[akpm@linux-foundation.org: fix whitespace]
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 13 insertions, 8 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 76a394812776..d51543de1813 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -806,18 +806,11 @@ static inline bool page_expected_state(struct page *page,
         return true;
 }
 
-static inline int free_pages_check(struct page *page)
+static void free_pages_check_bad(struct page *page)
 {
         const char *bad_reason;
         unsigned long bad_flags;
 
-        if (page_expected_state(page, PAGE_FLAGS_CHECK_AT_FREE)) {
-                page_cpupid_reset_last(page);
-                page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
-                return 0;
-        }
-
-        /* Something has gone sideways, find it */
         bad_reason = NULL;
         bad_flags = 0;
 
@@ -836,6 +829,18 @@ static inline int free_pages_check(struct page *page)
                 bad_reason = "page still charged to cgroup";
 #endif
         bad_page(page, bad_reason, bad_flags);
+}
+
+static inline int free_pages_check(struct page *page)
+{
+        if (likely(page_expected_state(page, PAGE_FLAGS_CHECK_AT_FREE))) {
+                page_cpupid_reset_last(page);
+                page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
+                return 0;
+        }
+
+        /* Something has gone sideways, find it */
+        free_pages_check_bad(page);
         return 1;
 }