[PATCH] ext4: remove the redundant folio_wait_stable()

From: Zhang Yi <yi.zhang@huaweicloud.com>
To: linux-ext4@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, tytso@mit.edu,
	adilger.kernel@dilger.ca, jack@suse.cz, yi.zhang@huawei.com,
	yi.zhang@huaweicloud.com, chengzhihao1@huawei.com,
	yukuai3@huawei.com
Subject: [PATCH] ext4: remove the redundant folio_wait_stable()
Date: Fri, 19 Apr 2024 10:30:05 +0800	[thread overview]
Message-ID: <20240419023005.2719050-1-yi.zhang@huaweicloud.com> (raw)

From: Zhang Yi <yi.zhang@huawei.com>

__filemap_get_folio() with FGP_WRITEBEGIN parameter has already wait
for stable folio, so remove the redundant folio_wait_stable() in
ext4_da_write_begin(), it was left over from the commit cc883236b792
("ext4: drop unnecessary journal handle in delalloc write") that
removed the retry getting page logic.

Fixes: cc883236b792 ("ext4: drop unnecessary journal handle in delalloc write")
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
---
 fs/ext4/inode.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 537803250ca9..6de6bf57699b 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2887,9 +2887,6 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
 	if (IS_ERR(folio))
 		return PTR_ERR(folio);
 
-	/* In case writeback began while the folio was unlocked */
-	folio_wait_stable(folio);
-
 #ifdef CONFIG_FS_ENCRYPTION
 	ret = ext4_block_write_begin(folio, pos, len, ext4_da_get_block_prep);
 #else
-- 
2.39.2

