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ocfs2: add fsdlm to stackglue

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Add code to use fs/dlm.

[ Modified to be part of the stack_user module -- Joel ]

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
David Teigland 2008-02-20 14:29:27 -08:00 • committed by Mark Fasheh
parent d4b95eef4d
commit cf4d8d75d8
3 changed files with 243 additions and 6 deletions
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19
fs/ocfs2/stackglue.h
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@ -26,6 +26,7 @@
#include <linux/dlmconstants.h>
#include "dlm/dlmapi.h"
#include <linux/dlm.h>
/*
* dlmconstants.h does not have a LOCAL flag. We hope to remove it
@ -60,6 +61,17 @@ struct ocfs2_locking_protocol {
void (*lp_unlock_ast)(void *astarg, int error);
};
/*
* The dlm_lockstatus struct includes lvb space, but the dlm_lksb struct only
* has a pointer to separately allocated lvb space. This struct exists only to
* include in the lksb union to make space for a combined dlm_lksb and lvb.
*/
struct fsdlm_lksb_plus_lvb {
struct dlm_lksb lksb;
char lvb[DLM_LVB_LEN];
};
/*
* A union of all lock status structures. We define it here so that the
* size of the union is known. Lock status structures are embedded in
@ -67,6 +79,8 @@ struct ocfs2_locking_protocol {
*/
union ocfs2_dlm_lksb {
struct dlm_lockstatus lksb_o2dlm;
struct dlm_lksb lksb_fsdlm;
struct fsdlm_lksb_plus_lvb padding;
};
/*
@ -221,17 +235,18 @@ int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn,
void ocfs2_cluster_hangup(const char *group, int grouplen);
int ocfs2_cluster_this_node(unsigned int *node);
struct ocfs2_lock_res;
int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
unsigned int namelen,
void *astarg);
struct ocfs2_lock_res *astarg);
int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *astarg);
struct ocfs2_lock_res *astarg);
int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb);
void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb);