linux-ext4 - [PATCH] ext4: set an error code in ext4_quota

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Date:   Fri, 21 Apr 2017 13:53:45 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Theodore Ts'o" <tytso@....edu>, Jan Kara <jack@...e.cz>
Cc:     Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] ext4: set an error code in ext4_quota_off()

We accidentally return success instead of a negative error code on these
paths.

Fixes: 957153fce8d2 ("ext4: Set flags on quota files directly")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4a32c9279f35..735adca37fdf 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5377,8 +5377,10 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
 
 		inode_lock(inode);
 		handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
-		if (IS_ERR(handle))
+		if (IS_ERR(handle)) {
+			err = PTR_ERR(handle);
 			goto unlock_inode;
+		}
 		EXT4_I(inode)->i_flags |= EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL;
 		inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
 				S_NOATIME | S_IMMUTABLE);
@@ -5478,8 +5480,10 @@ static int ext4_quota_off(struct super_block *sb, int type)
 	/* Update modification times of quota files when userspace can
 	 * start looking at them */
 	handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
-	if (IS_ERR(handle))
+	if (IS_ERR(handle)) {
+		err = PTR_ERR(handle);
 		goto out_unlock;
+	}
 	EXT4_I(inode)->i_flags &= ~(EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL);
 	inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
 	inode->i_mtime = inode->i_ctime = current_time(inode);