Intel OpenBMC Linux kernel source tree (mirror) https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev 2008-10-13T20:57:57+00:00 2008-10-13T20:57:57+00:00 Mark Fasheh mfasheh@suse.com 2008-07-21T21:29:16+00:00 urn:sha1:53da4939f349d4edd283b043219221ca5b78e4d4 This is actually pretty easy since fs/dlm already handles the bulk of the work. The Ocfs2 userspace cluster stack module already uses fs/dlm as the underlying lock manager, so I only had to add the right calls. Cluster-aware POSIX locks ("plocks") can be turned off by the same means at UNIX locks - mount with 'noflocks', or create a local-only Ocfs2 volume. Internally, the file system uses two sets of file_operations, depending on whether cluster aware plocks is required. This turns out to be easier than implementing local-only versions of ->lock. Signed-off-by: Mark Fasheh <mfasheh@suse.com> 2008-01-25T23:05:43+00:00 Mark Fasheh mark.fasheh@oracle.com 2007-12-21T00:49:04+00:00 urn:sha1:53fc622b9e829c8e632e45ef8c14f054388759c1 Hook up ocfs2_flock(), using the new flock lock type in dlmglue.c. A new mount option, "localflocks" is added so that users can revert to old functionality as need be. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>