linux-ext4 - [PATCH 2/9] ext2: remove ->writepage

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Date:   Sun, 13 Nov 2022 17:28:55 +0100
From:   Christoph Hellwig <hch@....de>
To:     Namjae Jeon <linkinjeon@...nel.org>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Jan Kara <jack@...e.com>,
        OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
        Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
        Dave Kleikamp <shaggy@...nel.org>,
        Bob Copeland <me@...copeland.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        jfs-discussion@...ts.sourceforge.net,
        linux-karma-devel@...ts.sourceforge.net, linux-mm@...ck.org
Subject: [PATCH 2/9] ext2: remove ->writepage

->writepage is a very inefficient method to write back data, and only
used through write_cache_pages or a a fallback when no ->migrate_folio
method is present.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 fs/ext2/inode.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 918ab2f9e4c05..3b2e3e1e0fa25 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -869,11 +869,6 @@ int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	return ret;
 }
 
-static int ext2_writepage(struct page *page, struct writeback_control *wbc)
-{
-	return block_write_full_page(page, ext2_get_block, wbc);
-}
-
 static int ext2_read_folio(struct file *file, struct folio *folio)
 {
 	return mpage_read_folio(folio, ext2_get_block);
@@ -948,7 +943,6 @@ const struct address_space_operations ext2_aops = {
 	.invalidate_folio	= block_invalidate_folio,
 	.read_folio		= ext2_read_folio,
 	.readahead		= ext2_readahead,
-	.writepage		= ext2_writepage,
 	.write_begin		= ext2_write_begin,
 	.write_end		= ext2_write_end,
 	.bmap			= ext2_bmap,
-- 
2.30.2