On Mon, Aug 04, 2008 at 02:19:12AM -0400, Chuck Lever wrote: > So, the JFFS2 locking problem is a garbage-collection issue. I'm not > sure this is the case with other file systems like XFS and OCFS2. My > impression was that XFS had a transaction logging deadlock, Just to clarify - XFS has a directory buffer lock deadlock. That is, while reading the contents of the directory buffer it is locked to prevent modifications from occurring while extracting the contents. Looking up an entry in the directory also requires the directory buffer lock (for the same reason), so calling the lookup while already holding the directory buffer lock (i.e from the filldir callback) will deadlock. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- 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
