Bruce, while working on the state mutex elimination stuff I saw these two issues in nfsd4_release_lockowner. These patches are untested but I just wanted to quickly get your take on them. [PATCH 1/2] nfsd4: break from inner lookup loop in nfsd4_release_lockowner on first match looks like a potential list corruption risk. [PATCH 2/2] nfsd4: ignore nfsv4.1 lockowners in nfsd4_release_lockowner I'm not sure that 100% needed but since we keep both nfsv4.0 and v4.1 owners hashed on the same lists we don't want a v4.0 operation to accidentally touch v4.1 state. Benny -- 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