filemap: Remove find_get_pages_range() and associated functions

All callers of find_get_pages_range(), pagevec_lookup_range() and
pagevec_lookup() have now been removed.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian Brauner (Microsoft) <brauner@kernel.org>

1 files changed, 0 insertions, 67 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index ce3209a8ad49..15399e8cd281 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2197,73 +2197,6 @@ bool folio_more_pages(struct folio *folio, pgoff_t index, pgoff_t max)
 }
 
 /**
- * find_get_pages_range - gang pagecache lookup
- * @mapping:	The address_space to search
- * @start:	The starting page index
- * @end:	The final page index (inclusive)
- * @nr_pages:	The maximum number of pages
- * @pages:	Where the resulting pages are placed
- *
- * find_get_pages_range() will search for and return a group of up to @nr_pages
- * pages in the mapping starting at index @start and up to index @end
- * (inclusive).  The pages are placed at @pages.  find_get_pages_range() takes
- * a reference against the returned pages.
- *
- * The search returns a group of mapping-contiguous pages with ascending
- * indexes.  There may be holes in the indices due to not-present pages.
- * We also update @start to index the next page for the traversal.
- *
- * Return: the number of pages which were found. If this number is
- * smaller than @nr_pages, the end of specified range has been
- * reached.
- */
-unsigned find_get_pages_range(struct address_space *mapping, pgoff_t *start,
-			      pgoff_t end, unsigned int nr_pages,
-			      struct page **pages)
-{
-	XA_STATE(xas, &mapping->i_pages, *start);
-	struct folio *folio;
-	unsigned ret = 0;
-
-	if (unlikely(!nr_pages))
-		return 0;
-
-	rcu_read_lock();
-	while ((folio = find_get_entry(&xas, end, XA_PRESENT))) {
-		/* Skip over shadow, swap and DAX entries */
-		if (xa_is_value(folio))
-			continue;
-
-again:
-		pages[ret] = folio_file_page(folio, xas.xa_index);
-		if (++ret == nr_pages) {
-			*start = xas.xa_index + 1;
-			goto out;
-		}
-		if (folio_more_pages(folio, xas.xa_index, end)) {
-			xas.xa_index++;
-			folio_ref_inc(folio);
-			goto again;
-		}
-	}
-
-	/*
-	 * We come here when there is no page beyond @end. We take care to not
-	 * overflow the index @start as it confuses some of the callers. This
-	 * breaks the iteration when there is a page at index -1 but that is
-	 * already broken anyway.
-	 */
-	if (end == (pgoff_t)-1)
-		*start = (pgoff_t)-1;
-	else
-		*start = end + 1;
-out:
-	rcu_read_unlock();
-
-	return ret;
-}
-
-/**
  * find_get_pages_contig - gang contiguous pagecache lookup
  * @mapping:	The address_space to search
  * @index:	The starting page index