mm/zsmalloc.c: fix -Wunneeded-internal-declaration warning
authorNick Desaulniers <nick.desaulniers@gmail.com>
Mon, 10 Jul 2017 22:47:26 +0000 (15:47 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 10 Jul 2017 23:32:30 +0000 (16:32 -0700)
is_first_page() is only called from the macro VM_BUG_ON_PAGE() which is
only compiled in as a runtime check when CONFIG_DEBUG_VM is set,
otherwise is checked at compile time and not actually compiled in.

Fixes the following warning, found with Clang:

  mm/zsmalloc.c:472:12: warning: function 'is_first_page' is not needed and will not be emitted [-Wunneeded-internal-declaration]
  static int is_first_page(struct page *page)
           ^

Link: http://lkml.kernel.org/r/20170524053859.29059-1-nick.desaulniers@gmail.com
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/zsmalloc.c

index d41edd28298b68ff335e6324df7e4e793a481d93..15959d35fc26c16e2d1ce622b83a375a95a7db18 100644 (file)
@@ -469,7 +469,7 @@ static bool is_zspage_isolated(struct zspage *zspage)
        return zspage->isolated;
 }
 
-static int is_first_page(struct page *page)
+static __maybe_unused int is_first_page(struct page *page)
 {
        return PagePrivate(page);
 }