[PATCH 22/23] ocfs2: Convert ocfs2_write_zero_page to use a folio

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

Removes a conversion of folio to page, and then two hidden conversions
of page back to folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 fs/ocfs2/file.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index ccc57038a977..cfec1782ac2a 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -755,7 +755,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 				 u64 abs_to, struct buffer_head *di_bh)
 {
 	struct address_space *mapping = inode->i_mapping;
-	struct page *page;
+	struct folio *folio;
 	unsigned long index = abs_from >> PAGE_SHIFT;
 	handle_t *handle;
 	int ret = 0;
@@ -774,9 +774,10 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 		goto out;
 	}
 
-	page = find_or_create_page(mapping, index, GFP_NOFS);
-	if (!page) {
-		ret = -ENOMEM;
+	folio = __filemap_get_folio(mapping, index,
+			FGP_LOCK | FGP_ACCESSED | FGP_CREAT, GFP_NOFS);
+	if (IS_ERR(folio)) {
+		ret = PTR_ERR(folio);
 		mlog_errno(ret);
 		goto out_commit_trans;
 	}
@@ -803,7 +804,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 		 * __block_write_begin and block_commit_write to zero the
 		 * whole block.
 		 */
-		ret = __block_write_begin(page, block_start + 1, 0,
+		ret = __block_write_begin(&folio->page, block_start + 1, 0,
 					  ocfs2_get_block);
 		if (ret < 0) {
 			mlog_errno(ret);
@@ -812,7 +813,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 
 
 		/* must not update i_size! */
-		block_commit_write(page, block_start + 1, block_start + 1);
+		block_commit_write(&folio->page, block_start + 1, block_start + 1);
 	}
 
 	/*
@@ -833,8 +834,8 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from,
 	}
 
 out_unlock:
-	unlock_page(page);
-	put_page(page);
+	folio_unlock(folio);
+	folio_put(folio);
 out_commit_trans:
 	if (handle)
 		ocfs2_commit_trans(OCFS2_SB(inode->i_sb), handle);
-- 
2.43.0