[PATCH 6.6.y 1/6] f2fs: Add f2fs_new_node_folio()

[Sasha Levin <sashal@kernel.org>]

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

[ Upstream commit cfa809146f8223c2953e7553f830c0877921f9de ]

Convert f2fs_new_node_page() to f2fs_new_node_folio() and add
a compatibility wrapper.  Removes five hidden calls to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Stable-dep-of: ce366bfa821e ("f2fs: fix to avoid potential deadloop in f2fs_fsync_node_pages()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/f2fs.h |  8 +++++++-
 fs/f2fs/node.c | 28 ++++++++++++++--------------
 2 files changed, 21 insertions(+), 15 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 63d3450f895ee..6bcc60b02bd00 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3680,7 +3680,7 @@ int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
 					unsigned int seq_id);
 int f2fs_remove_inode_page(struct inode *inode);
 struct page *f2fs_new_inode_page(struct inode *inode);
-struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
+struct folio *f2fs_new_node_folio(struct dnode_of_data *dn, unsigned int ofs);
 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
@@ -3708,6 +3708,12 @@ void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
 int __init f2fs_create_node_manager_caches(void);
 void f2fs_destroy_node_manager_caches(void);
 
+static inline
+struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
+{
+	return &f2fs_new_node_folio(dn, ofs)->page;
+}
+
 /*
  * segment.c
  */
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 586a90643ddd2..bf4bf31b73416 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1326,19 +1326,19 @@ struct page *f2fs_new_inode_page(struct inode *inode)
 	return f2fs_new_node_page(&dn, 0);
 }
 
-struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
+struct folio *f2fs_new_node_folio(struct dnode_of_data *dn, unsigned int ofs)
 {
 	struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
 	struct node_info new_ni;
-	struct page *page;
+	struct folio *folio;
 	int err;
 
 	if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC)))
 		return ERR_PTR(-EPERM);
 
-	page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false);
-	if (!page)
-		return ERR_PTR(-ENOMEM);
+	folio = f2fs_grab_cache_folio(NODE_MAPPING(sbi), dn->nid, false);
+	if (IS_ERR(folio))
+		return folio;
 
 	if (unlikely((err = inc_valid_node_count(sbi, dn->inode, !ofs))))
 		goto fail;
@@ -1369,12 +1369,12 @@ struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
 	new_ni.version = 0;
 	set_node_addr(sbi, &new_ni, NEW_ADDR, false);
 
-	f2fs_wait_on_page_writeback(page, NODE, true, true);
-	fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true);
-	set_cold_node(page, S_ISDIR(dn->inode->i_mode));
-	if (!PageUptodate(page))
-		SetPageUptodate(page);
-	if (set_page_dirty(page))
+	f2fs_folio_wait_writeback(folio, NODE, true, true);
+	fill_node_footer(&folio->page, dn->nid, dn->inode->i_ino, ofs, true);
+	set_cold_node(&folio->page, S_ISDIR(dn->inode->i_mode));
+	if (!folio_test_uptodate(folio))
+		folio_mark_uptodate(folio);
+	if (folio_mark_dirty(folio))
 		dn->node_changed = true;
 
 	if (f2fs_has_xattr_block(ofs))
@@ -1382,10 +1382,10 @@ struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs)
 
 	if (ofs == 0)
 		inc_valid_inode_count(sbi);
-	return page;
+	return folio;
 fail:
-	clear_node_page_dirty(page);
-	f2fs_put_page(page, 1);
+	clear_node_page_dirty(&folio->page);
+	f2fs_folio_put(folio, true);
 	return ERR_PTR(err);
 }
 
-- 
2.53.0