Find and return pages that match tag
unsigned find_get_pages_tag(struct address_space * mapping, pgoff_t * index, int tag, unsigned int nr_pages, struct page ** pages);
mapping
the address_space to search
index
the starting page index
tag
the tag index
nr_pages
the maximum number of pages
pages
where the resulting pages are placed
Like find_get_pages, except we only return pages which are tagged with tag. We update index to index the next page for the traversal.