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Subject[PATCH 4.19 064/125] ext4: handle error of ext4_setup_system_zone() on remount
Date
From: Jan Kara <jack@suse.cz>

[ Upstream commit d176b1f62f242ab259ff665a26fbac69db1aecba ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 03ebb0b385467..daabd7a2cee81 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5470,7 +5470,10 @@ 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)
--
2.25.1


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