4.9-stable review patch. If anyone has any objections, please let me know.
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From: Nick Desaulniers nick.desaulniers@gmail.com
commit 3457f4147675108aa83f9f33c136f06bb9f8518f upstream.
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 Signed-off-by: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/zsmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -473,7 +473,7 @@ static bool is_zspage_isolated(struct zs return zspage->isolated; }
-static int is_first_page(struct page *page) +static __maybe_unused int is_first_page(struct page *page) { return PagePrivate(page); }