linux-ext4 - [PATCH 1/4] ext4: Handle error of ext4_setup_system

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Date:   Wed, 15 Jul 2020 15:18:09 +0200
From:   Jan Kara <jack@...e.cz>
To:     Ted Tso <tytso@....edu>
Cc:     <linux-ext4@...r.kernel.org>,
        Ritesh Harjani <riteshh@...ux.ibm.com>,
        Wolfgang Frisch <wolfgang.frisch@...e.com>,
        Jan Kara <jack@...e.cz>
Subject: [PATCH 1/4] ext4: Handle error of ext4_setup_system_zone() on remount

ext4_setup_system_zone() can fail. Handle the failure in ext4_remount().

Signed-off-by: Jan Kara <jack@...e.cz>
---
 fs/ext4/super.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 330957ed1f05..8e055ec57a2c 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5653,7 +5653,10 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 		ext4_register_li_request(sb, first_not_zeroed);
 	}
 
-	ext4_setup_system_zone(sb);
+	err = ext4_setup_system_zone(sb);
+	if (err)
+		goto restore_opts;
+
 	if (sbi->s_journal == NULL && !(old_sb_flags & SB_RDONLY)) {
 		err = ext4_commit_super(sb, 1);
 		if (err)
-- 
2.16.4