diff options
| -rw-r--r-- | fs/reiserfs/super.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 91cf5cbd6332..f536e12c4b1d 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -89,6 +89,19 @@ static void flush_old_commits(struct work_struct *work) sbi = container_of(work, struct reiserfs_sb_info, old_work.work); s = sbi->s_journal->j_work_sb; + /* + * We need s_umount for protecting quota writeback. We have to use + * trylock as reiserfs_cancel_old_flush() may be waiting for this work + * to complete with s_umount held. + */ + if (!down_read_trylock(&s->s_umount)) { + /* Requeue work if we are not cancelling it */ + spin_lock(&sbi->old_work_lock); + if (sbi->work_queued == 1) + queue_delayed_work(system_long_wq, &sbi->old_work, HZ); + spin_unlock(&sbi->old_work_lock); + return; + } spin_lock(&sbi->old_work_lock); /* Avoid clobbering the cancel state... */ if (sbi->work_queued == 1) @@ -96,6 +109,7 @@ static void flush_old_commits(struct work_struct *work) spin_unlock(&sbi->old_work_lock); reiserfs_sync_fs(s, 1); + up_read(&s->s_umount); } void reiserfs_schedule_old_flush(struct super_block *s) |