This patch is to include support for EMC's Multi-Path File System (MPFS) into version 3.14 of Linux DiskQuota.
For the most part, MPFS is exactly like NFS. The only difference is that it will service read and write (and flush, etc) I/O requests directly over Fibre Channel or iSCSI. All other requests get passed on to the NFS stack.
MPFS is currently a proprietary implementation of the IETF draft for block pNFS, proposed to be included in NFS 4.1.
A patched build of 3.14 was tested on Red Hat Enterprise Linux 4 update 2 and 3.