Hello, this patch set changes quota code to use s_umount semaphore for serialization of quota on/off operations among each other and with other quotactl and quota writeback operations. So far we have used dedicated dqonoff_mutex but that triggered lockdep warnings during fs freezing and also unnecessarily serialized some quotactl operations. Al, any objections to patch 1/7 exporting functionality to get superblock with s_umount in exclusive mode? Alternatively I could add a wrapper around get_super_thawed() in quota code to drop s_umount & get it in exclusive mode and recheck that superblock didn't get unmounted / frozen but what I did here looked cleaner to me. OCFS2 guys, it would be good if you could test ocfs2 quotas with this patch set in some multi-node setup (I have tested just with a single node), especially whether quota file recovery for other nodes still works as expected. Thanks. If nobody objects, I'll push these changes through my tree to Linus. Honza -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
