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From:   Zhiguo Niu <zhiguo.niu@unisoc.com>
To:     <jaegeuk@kernel.org>, <chao@kernel.org>
CC:     <linux-f2fs-devel@lists.sourceforge.net>,
        <linux-kernel@vger.kernel.org>, <niuzhiguo84@gmail.com>,
        <zhiguo.niu@unisoc.com>, <ke.wang@unisoc.com>
Subject: [PATCH] f2fs: fix to check return value of f2fs_recover_xattr_data
Date:   Fri, 8 Dec 2023 16:50:33 +0800
Message-ID: <1702025433-5860-1-git-send-email-zhiguo.niu@unisoc.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Should check return value of f2fs_recover_xattr_data in
__f2fs_setxattr rather than doing invalid retry if error happen.

Also just do set_page_dirty in f2fs_recover_xattr_data when
page is changed really.

Fixes: 50a472bbc79f ("f2fs: do not return EFSCORRUPTED, but try to run online repair")
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
---
 fs/f2fs/node.c  |  6 +++---
 fs/f2fs/xattr.c | 12 +++++++-----
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e50a093..93bf724 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2754,11 +2754,11 @@ int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
 	f2fs_update_inode_page(inode);
 
 	/* 3: update and set xattr node page dirty */
-	if (page)
+	if (page) {
 		memcpy(F2FS_NODE(xpage), F2FS_NODE(page),
 				VALID_XATTR_BLOCK_SIZE);
-
-	set_page_dirty(xpage);
+		set_page_dirty(xpage);
+	}
 	f2fs_put_page(xpage, 1);
 
 	return 0;
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 47e88b4..de92891 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -660,11 +660,13 @@ static int __f2fs_setxattr(struct inode *inode, int index,
 	here = __find_xattr(base_addr, last_base_addr, NULL, index, len, name);
 	if (!here) {
 		if (!F2FS_I(inode)->i_xattr_nid) {
-			f2fs_notice(F2FS_I_SB(inode),
-				"recover xattr in inode (%lu)", inode->i_ino);
-			f2fs_recover_xattr_data(inode, NULL);
-			kfree(base_addr);
-			goto retry;
+			error = f2fs_recover_xattr_data(inode, NULL);
+			if (!error) {
+				f2fs_notice(F2FS_I_SB(inode),
+					"recover xattr in inode (%lu)", inode->i_ino);
+				kfree(base_addr);
+				goto retry;
+			}
 		}
 		f2fs_err(F2FS_I_SB(inode), "set inode (%lu) has corrupted xattr",
 								inode->i_ino);
-- 
1.9.1