SUNRPC: Further cleanups

 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

4 files changed, 27 insertions, 18 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 3d5d3c07d621..368b75b3bcba 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -195,14 +195,13 @@ static void update_changeattr(struct inode *inode, struct nfs4_change_info *cinf
 }
 
 /* Helper for asynchronous RPC calls */
-static int nfs4_call_async(struct rpc_clnt *clnt, rpc_action tk_begin,
+static int nfs4_call_async(struct rpc_clnt *clnt,
                 const struct rpc_call_ops *tk_ops, void *calldata)
 {
         struct rpc_task *task;
 
         if (!(task = rpc_new_task(clnt, RPC_TASK_ASYNC, tk_ops, calldata)))
                 return -ENOMEM;
-        task->tk_action = tk_begin;
         rpc_execute(task);
         return 0;
 }
@@ -882,6 +881,8 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
         struct nfs4_state *state = calldata->state;
         struct nfs_server *server = NFS_SERVER(calldata->inode);
 
+        if (RPC_ASSASSINATED(task))
+                return;
         /* hmm. we are done with the inode, and in the process of freeing
          * the state_owner. we keep this around to process errors
          */
@@ -904,9 +905,9 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
         nfs_refresh_inode(calldata->inode, calldata->res.fattr);
 }
 
-static void nfs4_close_begin(struct rpc_task *task)
+static void nfs4_close_prepare(struct rpc_task *task, void *data)
 {
-        struct nfs4_closedata *calldata = (struct nfs4_closedata *)task->tk_calldata;
+        struct nfs4_closedata *calldata = data;
         struct nfs4_state *state = calldata->state;
         struct rpc_message msg = {
                 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
@@ -944,6 +945,7 @@ static void nfs4_close_begin(struct rpc_task *task)
 }
 
 static const struct rpc_call_ops nfs4_close_ops = {
+        .rpc_call_prepare = nfs4_close_prepare,
         .rpc_call_done = nfs4_close_done,
         .rpc_release = nfs4_free_closedata,
 };
@@ -980,8 +982,7 @@ int nfs4_do_close(struct inode *inode, struct nfs4_state *state)
         calldata->res.fattr = &calldata->fattr;
         calldata->res.server = server;
 
-        status = nfs4_call_async(server->client, nfs4_close_begin,
-                        &nfs4_close_ops, calldata);
+        status = nfs4_call_async(server->client, &nfs4_close_ops, calldata);
         if (status == 0)
                 goto out;
 
@@ -2909,9 +2910,9 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
         }
 }
 
-static void nfs4_locku_begin(struct rpc_task *task)
+static void nfs4_locku_prepare(struct rpc_task *task, void *data)
 {
-        struct nfs4_unlockdata *calldata = (struct nfs4_unlockdata *)task->tk_calldata;
+        struct nfs4_unlockdata *calldata = data;
         struct rpc_message msg = {
                 .rpc_proc       = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
                 .rpc_argp       = &calldata->arg,
@@ -2932,6 +2933,7 @@ static void nfs4_locku_begin(struct rpc_task *task)
 }
 
 static const struct rpc_call_ops nfs4_locku_ops = {
+        .rpc_call_prepare = nfs4_locku_prepare,
         .rpc_call_done = nfs4_locku_done,
         .rpc_release = nfs4_locku_complete,
 };
@@ -2979,8 +2981,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *
         atomic_set(&calldata->refcount, 2);
         init_completion(&calldata->completion);
 
-        status = nfs4_call_async(NFS_SERVER(inode)->client, nfs4_locku_begin,
-                        &nfs4_locku_ops, calldata);
+        status = nfs4_call_async(NFS_SERVER(inode)->client, &nfs4_locku_ops, calldata);
         if (status == 0)
                 wait_for_completion_interruptible(&calldata->completion);
         do_vfs_lock(request->fl_file, request);
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 1494484ba86d..a65c7b53d558 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -87,10 +87,9 @@ nfs_copy_dname(struct dentry *dentry, struct nfs_unlinkdata *data)
  * We delay initializing RPC info until after the call to dentry_iput()
  * in order to minimize races against rename().
  */
-static void
-nfs_async_unlink_init(struct rpc_task *task)
+static void nfs_async_unlink_init(struct rpc_task *task, void *calldata)
 {
-        struct nfs_unlinkdata   *data = (struct nfs_unlinkdata *)task->tk_calldata;
+        struct nfs_unlinkdata   *data = calldata;
         struct dentry           *dir = data->dir;
         struct rpc_message      msg = {
                 .rpc_cred       = data->cred,
@@ -147,6 +146,7 @@ static void nfs_async_unlink_release(void *calldata)
 }
 
 static const struct rpc_call_ops nfs_unlink_ops = {
+        .rpc_call_prepare = nfs_async_unlink_init,
         .rpc_call_done = nfs_async_unlink_done,
         .rpc_release = nfs_async_unlink_release,
 };
@@ -160,7 +160,6 @@ nfs_async_unlink(struct dentry *dentry)
 {
         struct dentry   *dir = dentry->d_parent;
         struct nfs_unlinkdata   *data;
-        struct rpc_task *task;
         struct rpc_clnt *clnt = NFS_CLIENT(dir->d_inode);
         int             status = -ENOMEM;
 
@@ -181,15 +180,13 @@ nfs_async_unlink(struct dentry *dentry)
         nfs_deletes = data;
         data->count = 1;
 
-        task = &data->task;
-        rpc_init_task(task, clnt, RPC_TASK_ASYNC, &nfs_unlink_ops, data);
-        task->tk_action = nfs_async_unlink_init;
+        rpc_init_task(&data->task, clnt, RPC_TASK_ASYNC, &nfs_unlink_ops, data);
 
         spin_lock(&dentry->d_lock);
         dentry->d_flags |= DCACHE_NFSFS_RENAMED;
         spin_unlock(&dentry->d_lock);
 
-        rpc_sleep_on(&nfs_delete_queue, task, NULL, NULL);
+        rpc_sleep_on(&nfs_delete_queue, &data->task, NULL, NULL);
         status = 0;
  out:
         return status;
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 581d8cdc3b86..ac1326fc3e1a 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -112,6 +112,7 @@ struct rpc_task {
 typedef void                    (*rpc_action)(struct rpc_task *);
 
 struct rpc_call_ops {
+        void (*rpc_call_prepare)(struct rpc_task *, void *);
         void (*rpc_call_done)(struct rpc_task *, void *);
         void (*rpc_release)(void *);
 };
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 8d6233d3248b..2d74a1672028 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -555,6 +555,14 @@ __rpc_atrun(struct rpc_task *task)
 }
 
 /*
+ * Helper to call task->tk_ops->rpc_call_prepare
+ */
+static void rpc_prepare_task(struct rpc_task *task)
+{
+        task->tk_ops->rpc_call_prepare(task, task->tk_calldata);
+}
+
+/*
  * Helper that calls task->tk_ops->rpc_call_done if it exists
  */
 void rpc_exit_task(struct rpc_task *task)
@@ -756,6 +764,8 @@ void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, cons
         task->tk_client = clnt;
         task->tk_flags  = flags;
         task->tk_ops = tk_ops;
+        if (tk_ops->rpc_call_prepare != NULL)
+                task->tk_action = rpc_prepare_task;
         task->tk_calldata = calldata;
 
         /* Initialize retry counters */