From ffd8f251f1a61e592aa3146d2c3cfb6a992e80f2 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Wed, 30 Jun 2021 18:53:53 -0700 Subject: mm/page_alloc: move prototype for find_suitable_fallback make W=1 generates the following warning in mmap_lock.c for allnoconfig mm/page_alloc.c:2670:5: warning: no previous prototype for `find_suitable_fallback' [-Wmissing-prototypes] int find_suitable_fallback(struct free_area *area, unsigned int order, ^~~~~~~~~~~~~~~~~~~~~~ find_suitable_fallback is only shared outside of page_alloc.c for CONFIG_COMPACTION but to suppress the warning, move the protype outside of CONFIG_COMPACTION. It is not worth the effort at this time to find a clever way of allowing compaction.c to share the code or avoid the use entirely as the function is called on relatively slow paths. Link: https://lkml.kernel.org/r/20210520084809.8576-14-mgorman@techsingularity.net Signed-off-by: Mel Gorman Reviewed-by: Yang Shi Acked-by: Vlastimil Babka Cc: Dan Streetman Cc: David Hildenbrand Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/internal.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'mm/internal.h') diff --git a/mm/internal.h b/mm/internal.h index f38bc5d75ab7..2d7c9a2e0118 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -274,11 +274,10 @@ isolate_freepages_range(struct compact_control *cc, int isolate_migratepages_range(struct compact_control *cc, unsigned long low_pfn, unsigned long end_pfn); +#endif int find_suitable_fallback(struct free_area *area, unsigned int order, int migratetype, bool only_stealable, bool *can_steal); -#endif - /* * This function returns the order of a free page in the buddy system. In * general, page_zone(page)->lock must be held by the caller to prevent the -- cgit v1.2.3