nilfs2: convert nilfs_btnode_delete to use a folio

Saves six calls to compound_head().

Link: https://lkml.kernel.org/r/20231114084436.2755-18-konishi.ryusuke@gmail.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index 5ef9eebd8d2e042be01626f1be6c68016c83401e..e077d4a7a11c3c38def6d268c02c4340b1613399 100644 (file)
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -145,19 +145,19 @@ out_locked:
 void nilfs_btnode_delete(struct buffer_head *bh)
 {
        struct address_space *mapping;
-       struct page *page = bh->b_page;
-       pgoff_t index = page_index(page);
+       struct folio *folio = bh->b_folio;
+       pgoff_t index = folio->index;
        int still_dirty;
 
-       get_page(page);
-       lock_page(page);
-       wait_on_page_writeback(page);
+       folio_get(folio);
+       folio_lock(folio);
+       folio_wait_writeback(folio);
 
        nilfs_forget_buffer(bh);
-       still_dirty = PageDirty(page);
-       mapping = page->mapping;
-       unlock_page(page);
-       put_page(page);
+       still_dirty = folio_test_dirty(folio);
+       mapping = folio->mapping;
+       folio_unlock(folio);
+       folio_put(folio);
 
        if (!still_dirty && mapping)
                invalidate_inode_pages2_range(mapping, index, index);