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Subject[PATCH 06/11] ocfs2: Hang the locking proto on the cluster conn and use it in asts.
Date
With the ocfs2_cluster_connection hanging off of the ocfs2_dlm_lksb, we
have access to it in the ast and bast wrapper functions. Attach the
ocfs2_locking_protocol to the conn.

Now, instead of refering to a static variable for ast/bast pointers, the
wrappers can look at the connection. This means different connections
can have different ast/bast pointers, and it reduces the need for the
static pointer.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
---
fs/ocfs2/stack_o2cb.c | 15 ++++-----------
fs/ocfs2/stack_user.c | 10 +++-------
fs/ocfs2/stackglue.c | 1 +
fs/ocfs2/stackglue.h | 1 +
4 files changed, 9 insertions(+), 18 deletions(-)
diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c
index 41e6bad..abf696a 100644
--- a/fs/ocfs2/stack_o2cb.c
+++ b/fs/ocfs2/stack_o2cb.c
@@ -163,28 +163,21 @@ static void o2dlm_lock_ast_wrapper(void *astarg)
{
struct ocfs2_dlm_lksb *lksb = astarg;

- BUG_ON(o2cb_stack.sp_proto == NULL);
-
- o2cb_stack.sp_proto->lp_lock_ast(lksb);
+ lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
}

static void o2dlm_blocking_ast_wrapper(void *astarg, int level)
{
struct ocfs2_dlm_lksb *lksb = astarg;

- BUG_ON(o2cb_stack.sp_proto == NULL);
-
- o2cb_stack.sp_proto->lp_blocking_ast(lksb, level);
+ lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
}

static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
{
struct ocfs2_dlm_lksb *lksb = astarg;
-
int error = dlm_status_to_errno(status);

- BUG_ON(o2cb_stack.sp_proto == NULL);
-
/*
* In o2dlm, you can get both the lock_ast() for the lock being
* granted and the unlock_ast() for the CANCEL failing. A
@@ -199,7 +192,7 @@ static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
if (status == DLM_CANCELGRANT)
return;

- o2cb_stack.sp_proto->lp_unlock_ast(lksb, error);
+ lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, error);
}

static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
@@ -284,7 +277,7 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
struct dlm_protocol_version dlm_version;

BUG_ON(conn == NULL);
- BUG_ON(o2cb_stack.sp_proto == NULL);
+ BUG_ON(conn->cc_proto == NULL);

/* for now we only have one cluster/node, make sure we see it
* in the heartbeat universe */
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 31276ba..b4cf616 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -668,8 +668,6 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
struct ocfs2_dlm_lksb *lksb = astarg;
int status = lksb->lksb_fsdlm.sb_status;

- BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
-
/*
* For now we're punting on the issue of other non-standard errors
* where we can't tell if the unlock_ast or lock_ast should be called.
@@ -681,18 +679,16 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
*/

if (status == -DLM_EUNLOCK || status == -DLM_ECANCEL)
- ocfs2_user_plugin.sp_proto->lp_unlock_ast(lksb, 0);
+ lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, 0);
else
- ocfs2_user_plugin.sp_proto->lp_lock_ast(lksb);
+ lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
}

static void fsdlm_blocking_ast_wrapper(void *astarg, int level)
{
struct ocfs2_dlm_lksb *lksb = astarg;

- BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
-
- ocfs2_user_plugin.sp_proto->lp_blocking_ast(lksb, level);
+ lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
}

static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 8ef9a57..010ecab 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -343,6 +343,7 @@ int ocfs2_cluster_connect(const char *stack_name,
new_conn->cc_recovery_handler = recovery_handler;
new_conn->cc_recovery_data = recovery_data;

+ new_conn->cc_proto = lproto;
/* Start the new connection at our maximum compatibility level */
new_conn->cc_version = lproto->lp_max_version;

diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index bb32926..cf8bac2 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -100,6 +100,7 @@ struct ocfs2_cluster_connection {
char cc_name[GROUP_NAME_MAX];
int cc_namelen;
struct ocfs2_protocol_version cc_version;
+ struct ocfs2_locking_protocol *cc_proto;
void (*cc_recovery_handler)(int node_num, void *recovery_data);
void *cc_recovery_data;
void *cc_lockspace;
--
1.6.6.1


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