On Fri, Aug 01, 2008 at 12:14:17PM +1000, Neil Brown wrote: > It sounds to me like the core problem here is that the locking regime > imposed by the VFS simply isn't suitable for JFFS2 .. and a bunch of > other filesystems. > > This seems to suggest that the VFS should be changed. > Superficially, it seems that changing the locking rules so that the > callee takes i_mutex rather than the caller taking it would help and, > in the case of JFFS2, make f->sem redundant. Does that match your > understanding? Huh? How could that possibly help? You are not changing the sequence of operations on locks, you only slightly modify the timing; how could that possibly eliminate a deadlock? Moreover, how the _hell_ could making exclusion area smaller make f->sem redundant? -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
