]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
ocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.
authorJoel Becker <joel.becker@oracle.com>
Fri, 1 Feb 2008 22:39:35 +0000 (14:39 -0800)
committerMark Fasheh <mfasheh@suse.com>
Fri, 18 Apr 2008 15:56:04 +0000 (08:56 -0700)
commit4670c46ded9a18268d1265417ff4ac72145a7917
tree4f70822ddee389a9c8ed572b215a3355c20db3a1
parent8f2c9c1b16bf6ed0903b29c49d56fa0109a390e4
ocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.

This step introduces a cluster stack agnostic API for initializing and
exiting.  fs/ocfs2/dlmglue.c no longer uses o2cb/o2dlm knowledge to
connect to the stack.  It is all handled in stackglue.c.

heartbeat.c no longer needs to know how it gets called.
ocfs2_do_node_down() is now a clean recovery trigger.

The big gotcha is the ordering of initializations and de-initializations done
underneath ocfs2_cluster_connect().  ocfs2_dlm_init() used to do all
o2dlm initialization in one block.  Thus, the o2dlm functionality of
ocfs2_cluster_connect() is very straightforward.  ocfs2_dlm_shutdown(),
however, did a few things between de-registration of the eviction
callback and actually shutting down the domain.  Now de-registration and
shutdown of the domain are wrapped within the single
ocfs2_cluster_disconnect() call.  I've checked the code paths to make
sure we can safely tear down things in ocfs2_dlm_shutdown() before
calling ocfs2_cluster_disconnect().  The filesystem has already set
itself to ignore the callback.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
fs/ocfs2/dlmglue.c
fs/ocfs2/dlmglue.h
fs/ocfs2/heartbeat.c
fs/ocfs2/heartbeat.h
fs/ocfs2/ocfs2.h
fs/ocfs2/stackglue.c
fs/ocfs2/stackglue.h
fs/ocfs2/super.c