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ext4: warn on read-only filesystem in ext4_journal_check_start() 

Now that filesystem abort marks the filesystem as shutdown, we shouldn't
be ever hitting the sb_rdonly() check in ext4_journal_check_start().
Since this is a suitable place for catching all sorts of programming
errors, convert the check to WARN_ON instead of dropping it.

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230616165109.21695-7-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Jan Kara 2023-06-16 18:50:53 +02:00 committed by Theodore Ts'o
parent e0e985f3f8
commit e7fc2b31e0
1 changed files with 2 additions and 1 deletions
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3
fs/ext4/ext4_jbd2.c
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@ -70,8 +70,9 @@ static int ext4_journal_check_start(struct super_block *sb)
if (unlikely(ext4_forced_shutdown(sb)))
return -EIO;
if (sb_rdonly(sb))
if (WARN_ON_ONCE(sb_rdonly(sb)))
return -EROFS;
WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE);
journal = EXT4_SB(sb)->s_journal;
/*