24ef1815e5
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>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* stackglue.c
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*
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* Code which implements an OCFS2 specific interface to underlying
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* cluster stacks.
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*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#include <linux/types.h>
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#include <linux/list.h>
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#include "dlm/dlmapi.h"
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#include "stackglue.h"
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static struct ocfs2_locking_protocol *lproto;
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enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm,
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int mode,
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struct dlm_lockstatus *lksb,
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u32 flags,
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void *name,
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unsigned int namelen,
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void *astarg)
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{
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BUG_ON(lproto == NULL);
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return dlmlock(dlm, mode, lksb, flags, name, namelen,
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lproto->lp_lock_ast, astarg,
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lproto->lp_blocking_ast);
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}
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enum dlm_status ocfs2_dlm_unlock(struct dlm_ctxt *dlm,
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struct dlm_lockstatus *lksb,
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u32 flags,
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void *astarg)
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{
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BUG_ON(lproto == NULL);
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return dlmunlock(dlm, lksb, flags, lproto->lp_unlock_ast, astarg);
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}
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void o2cb_get_stack(struct ocfs2_locking_protocol *proto)
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{
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BUG_ON(proto == NULL);
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lproto = proto;
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}
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void o2cb_put_stack(void)
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{
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lproto = NULL;
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}
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