diff options
author | Joel Becker <joel.becker@oracle.com> | 2008-01-29 17:37:32 -0800 |
---|---|---|
committer | Mark Fasheh <mfasheh@suse.com> | 2008-04-18 08:56:03 -0700 |
commit | 24ef1815e5e13e50196eb1ab8ddc0d783443bdf8 (patch) | |
tree | 4c44e87b1a80d4745416c9973258c40db8433829 /fs/ocfs2/stackglue.c | |
parent | 386a2ef8576e966076c293f6496b9e3d7e3d9035 (diff) | |
download | linux-stable-24ef1815e5e13e50196eb1ab8ddc0d783443bdf8.tar.gz linux-stable-24ef1815e5e13e50196eb1ab8ddc0d783443bdf8.tar.bz2 linux-stable-24ef1815e5e13e50196eb1ab8ddc0d783443bdf8.zip |
ocfs2: Separate out dlm lock functions.
This is the first in a series of patches to isolate ocfs2 from the
underlying cluster stack. Here we wrap the dlm locking functions with
ocfs2-specific calls. Because ocfs2 always uses the same dlm lock status
callbacks, we can eliminate the callbacks from the filesystem visible
functions.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/stackglue.c')
-rw-r--r-- | fs/ocfs2/stackglue.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c new file mode 100644 index 000000000000..4f44f23795f0 --- /dev/null +++ b/fs/ocfs2/stackglue.c @@ -0,0 +1,65 @@ +/* -*- mode: c; c-basic-offset: 8; -*- + * vim: noexpandtab sw=8 ts=8 sts=0: + * + * stackglue.c + * + * Code which implements an OCFS2 specific interface to underlying + * cluster stacks. + * + * Copyright (C) 2007 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include <linux/types.h> +#include <linux/list.h> + +#include "dlm/dlmapi.h" + +#include "stackglue.h" + +static struct ocfs2_locking_protocol *lproto; + +enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm, + int mode, + struct dlm_lockstatus *lksb, + u32 flags, + void *name, + unsigned int namelen, + void *astarg) +{ + BUG_ON(lproto == NULL); + return dlmlock(dlm, mode, lksb, flags, name, namelen, + lproto->lp_lock_ast, astarg, + lproto->lp_blocking_ast); +} + +enum dlm_status ocfs2_dlm_unlock(struct dlm_ctxt *dlm, + struct dlm_lockstatus *lksb, + u32 flags, + void *astarg) +{ + BUG_ON(lproto == NULL); + + return dlmunlock(dlm, lksb, flags, lproto->lp_unlock_ast, astarg); +} + + +void o2cb_get_stack(struct ocfs2_locking_protocol *proto) +{ + BUG_ON(proto == NULL); + + lproto = proto; +} + +void o2cb_put_stack(void) +{ + lproto = NULL; +} |