mm: remove pagevec_lookup_range_nr_tag()

With the merge of commit 2e169296 ("ceph: have ceph_writepages_start
call pagevec_lookup_range_tag"), nothing calls this anymore.

Link: https://lkml.kernel.org/r/20201021193926.101474-1-jlayton@kernel.orgSigned-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/pagevec.h

@@ -43,9 +43,6 @@ static inline unsigned pagevec_lookup(struct pagevec *pvec,
 unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
 		struct address_space *mapping, pgoff_t *index, pgoff_t end,
 		xa_mark_t tag);
-unsigned pagevec_lookup_range_nr_tag(struct pagevec *pvec,
-		struct address_space *mapping, pgoff_t *index, pgoff_t end,
-		xa_mark_t tag, unsigned max_pages);
 static inline unsigned pagevec_lookup_tag(struct pagevec *pvec,
 		struct address_space *mapping, pgoff_t *index, xa_mark_t tag)
 {

mm/swap.c

@@ -1167,15 +1167,6 @@ unsigned pagevec_lookup_range_tag(struct pagevec *pvec,
 }
 EXPORT_SYMBOL(pagevec_lookup_range_tag);
 
-unsigned pagevec_lookup_range_nr_tag(struct pagevec *pvec,
-		struct address_space *mapping, pgoff_t *index, pgoff_t end,
-		xa_mark_t tag, unsigned max_pages)
-{
-	pvec->nr = find_get_pages_range_tag(mapping, index, end, tag,
-		min_t(unsigned int, max_pages, PAGEVEC_SIZE), pvec->pages);
-	return pagevec_count(pvec);
-}
-EXPORT_SYMBOL(pagevec_lookup_range_nr_tag);
 /*
  * Perform any setup for the swap system
  */