mm: add variant of pagevec_lookup_range_tag() taking number of pages
[sfrench/cifs-2.6.git] / mm / swap.c
index e1c74eb8a775d4e8985caa070bb0b93efce70843..6c50fec2da9291148c809d85d04d4aad6c94959b 100644 (file)
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -996,6 +996,15 @@ 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,
+               int 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
  */