From d176b1f62f242ab259ff665a26fbac69db1aecba Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Tue, 28 Jul 2020 15:04:32 +0200
Subject: [PATCH] ext4: handle error of ext4_setup_system_zone() on remount
Git-commit: d176b1f62f242ab259ff665a26fbac69db1aecba
Patch-mainline: v5.9-rc2
References: bsc#1173485
ext4_setup_system_zone() can fail. Handle the failure in ext4_remount().
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20200728130437.7804-2-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jan Kara <jack@suse.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 7deb2b75fcd0..6507e30e58b5 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5747,7 +5747,10 @@ 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