RPC: Clean up RPC task structure
Shrink the RPC task structure. Instead of storing separate pointers
for task->tk_exit and task->tk_release, put them in a structure.
Also pass the user data pointer as a parameter instead of passing it via
task->tk_calldata. This enables us to nest callbacks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 49f9597..87d09a0 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -41,7 +41,8 @@
static void nlmsvc_insert_block(struct nlm_block *block, unsigned long);
static int nlmsvc_remove_block(struct nlm_block *block);
-static void nlmsvc_grant_callback(struct rpc_task *task);
+
+static const struct rpc_call_ops nlmsvc_grant_ops;
/*
* The list of blocked locks to retry
@@ -562,7 +563,7 @@
/* Call the client */
nlm_get_host(block->b_call.a_host);
if (nlmsvc_async_call(&block->b_call, NLMPROC_GRANTED_MSG,
- nlmsvc_grant_callback) < 0)
+ &nlmsvc_grant_ops) < 0)
nlm_release_host(block->b_call.a_host);
up(&file->f_sema);
}
@@ -575,10 +576,9 @@
* chain once more in order to have it removed by lockd itself (which can
* then sleep on the file semaphore without disrupting e.g. the nfs client).
*/
-static void
-nlmsvc_grant_callback(struct rpc_task *task)
+static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
{
- struct nlm_rqst *call = (struct nlm_rqst *) task->tk_calldata;
+ struct nlm_rqst *call = data;
struct nlm_block *block;
unsigned long timeout;
struct sockaddr_in *peer_addr = RPC_PEERADDR(task->tk_client);
@@ -614,6 +614,10 @@
nlm_release_host(call->a_host);
}
+static const struct rpc_call_ops nlmsvc_grant_ops = {
+ .rpc_call_done = nlmsvc_grant_callback,
+};
+
/*
* We received a GRANT_RES callback. Try to find the corresponding
* block.