From 4753d8a24d4588657bc0a4cd66d4e282dff15c8c Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sun, 5 Feb 2017 01:26:48 -0500 Subject: [PATCH] ext4: return EROFS if device is r/o and journal replay is needed If the file system requires journal recovery, and the device is read-ony, return EROFS to the mount system call. This allows xfstests generic/050 to pass. Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org --- fs/ext4/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 3fef82e79131..514e5fc59893 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3925,7 +3925,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) * root first: it may be modified in the journal! */ if (!test_opt(sb, NOLOAD) && ext4_has_feature_journal(sb)) { - if (ext4_load_journal(sb, es, journal_devnum)) + err = ext4_load_journal(sb, es, journal_devnum); + if (err) goto failed_mount3a; } else if (test_opt(sb, NOLOAD) && !(sb->s_flags & MS_RDONLY) && ext4_has_feature_journal_needs_recovery(sb)) {