@@ -186,11 +186,8 @@ static int kmmpd(void *data)
goto exit_thread;
}
- if (sb_rdonly(sb)) {
- ext4_warning(sb, "kmmpd being stopped since filesystem "
- "has been remounted as readonly.");
- goto exit_thread;
- }
+ if (sb_rdonly(sb))
+ break;
diff = jiffies - last_update_time;
if (diff < mmp_update_interval * HZ)
@@ -5219,6 +5219,8 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
if (sbi->s_journal)
ext4_mark_recovery_complete(sb, es);
+ if (sbi->s_mmp_tsk)
+ kthread_stop(sbi->s_mmp_tsk);
} else {
/* Make sure we can mount this feature set readwrite */
if (ext4_has_feature_readonly(sb) ||
Previously, when an MMP-protected file system is remounted read-only, the kmmpd thread would exit the next time it woke up (a few seconds later), without resetting the MMP sequence number back to EXT4_MMP_SEQ_CLEAN. Fix this by explicitly killing the MMP thread when the file system is remounted read-only. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: Andreas Dilger <adilger@dilger.ca> --- fs/ext4/mmp.c | 7 ++----- fs/ext4/super.c | 2 ++ 2 files changed, 4 insertions(+), 5 deletions(-)