readahead: Convert page_cache_ra_unbounded to folios

This saves 99 bytes of kernel text.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>

diff --git a/mm/readahead.c b/mm/readahead.c
index e48e786..cf0dcf8 100644 (file)
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -196,9 +196,9 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,
         * Preallocate as many pages as we will need.
         */
        for (i = 0; i < nr_to_read; i++) {
-               struct page *page = xa_load(&mapping->i_pages, index + i);
+               struct folio *folio = xa_load(&mapping->i_pages, index + i);
 
-               if (page && !xa_is_value(page)) {
+               if (folio && !xa_is_value(folio)) {
                        /*
                         * Page already present?  Kick off the current batch
                         * of contiguous pages before continuing with the
@@ -212,21 +212,21 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,
                        continue;
                }
 
-               page = __page_cache_alloc(gfp_mask);
-               if (!page)
+               folio = filemap_alloc_folio(gfp_mask, 0);
+               if (!folio)
                        break;
                if (mapping->a_ops->readpages) {
-                       page->index = index + i;
-                       list_add(&page->lru, &page_pool);
-               } else if (add_to_page_cache_lru(page, mapping, index + i,
+                       folio->index = index + i;
+                       list_add(&folio->lru, &page_pool);
+               } else if (filemap_add_folio(mapping, folio, index + i,
                                        gfp_mask) < 0) {
-                       put_page(page);
+                       folio_put(folio);
                        read_pages(ractl, &page_pool, true);
                        i = ractl->_index + ractl->_nr_pages - index - 1;
                        continue;
                }
                if (i == nr_to_read - lookahead_size)
-                       SetPageReadahead(page);
+                       folio_set_readahead(folio);
                ractl->_nr_pages++;
        }