mm: remove unused pagevec_free

It not exported and now nobody uses it.

Signed-off-by: Konstantin Khlebnikov <[e-mail]>
Cc: Mel Gorman <[e-mail]>
Cc: KOSAKI Motohiro <[e-mail]>
Reviewed-by: Minchan Kim <[e-mail]>
Acked-by: Hugh Dickins <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/linux/pagevec.h

···
 };
 
 void __pagevec_release(struct pagevec *pvec);
-void __pagevec_free(struct pagevec *pvec);
 void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru);
 void pagevec_strip(struct pagevec *pvec);
 unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping,
···
 {
 	if (pagevec_count(pvec))
 		__pagevec_release(pvec);
-}
-
-static inline void pagevec_free(struct pagevec *pvec)
-{
-	if (pagevec_count(pvec))
-		__pagevec_free(pvec);
 }
 
 static inline void __pagevec_lru_add_anon(struct pagevec *pvec)

mm/page_alloc.c

···
 }
 EXPORT_SYMBOL(get_zeroed_page);
 
-void __pagevec_free(struct pagevec *pvec)
-{
-	int i = pagevec_count(pvec);
-
-	while (--i >= 0) {
-		trace_mm_pagevec_free(pvec->pages[i], pvec->cold);
-		free_hot_cold_page(pvec->pages[i], pvec->cold);
-	}
-}
-
 void __free_pages(struct page *page, unsigned int order)
 {
 	if (put_page_testzero(page)) {