nilfs2: convert nilfs_btree_lookup_dirty_buffers() to use filemap_get_folios_tag()

Convert function to use folios throughout.  This is in preparation for the
removal of find_get_pages_range_tag().  This change removes 1 call to
compound_head().

Link: https://lkml.kernel.org/r/20230104211448.4804-21-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index b5f997e5e67088e8f75cfec7a58e4e894c31e7f6..2681a449edc162da2adee43f78e4e53dc9a2aa95 100644 (file)
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -2150,7 +2150,7 @@ static void nilfs_btree_lookup_dirty_buffers(struct nilfs_bmap *btree,
        struct inode *btnc_inode = NILFS_BMAP_I(btree)->i_assoc_inode;
        struct address_space *btcache = btnc_inode->i_mapping;
        struct list_head lists[NILFS_BTREE_LEVEL_MAX];
-       struct pagevec pvec;
+       struct folio_batch fbatch;
        struct buffer_head *bh, *head;
        pgoff_t index = 0;
        int level, i;
@@ -2160,19 +2160,19 @@ static void nilfs_btree_lookup_dirty_buffers(struct nilfs_bmap *btree,
             level++)
                INIT_LIST_HEAD(&lists[level]);
 
-       pagevec_init(&pvec);
+       folio_batch_init(&fbatch);
 
-       while (pagevec_lookup_tag(&pvec, btcache, &index,
-                                       PAGECACHE_TAG_DIRTY)) {
-               for (i = 0; i < pagevec_count(&pvec); i++) {
-                       bh = head = page_buffers(pvec.pages[i]);
+       while (filemap_get_folios_tag(btcache, &index, (pgoff_t)-1,
+                               PAGECACHE_TAG_DIRTY, &fbatch)) {
+               for (i = 0; i < folio_batch_count(&fbatch); i++) {
+                       bh = head = folio_buffers(fbatch.folios[i]);
                        do {
                                if (buffer_dirty(bh))
                                        nilfs_btree_add_dirty_buffer(btree,
                                                                     lists, bh);
                        } while ((bh = bh->b_this_page) != head);
                }
-               pagevec_release(&pvec);
+               folio_batch_release(&fbatch);
                cond_resched();
        }