An updateed lsof package that adds one enhancement is now available for Red Hat Enterprise Linux 6.
The lsof package provides the LiSt Open Files (LSOF) tool to list information about files that are open and running on a Linux/UNIX system.
This enhancement update adds the new option +|-e s to lsof which exempts file systems with the path name "s" from being subjected to kernel function calls that might block. Note, that only the first +|-e argument is processed and the rest is ignored.
All users of lsof are advised to upgrade to this updated package, which add this enhancement.