SUNRPC: Ensure rpc_call_async() always calls tk_ops->rpc_release()
Currently this will not happen if we exit before rpc_new_task() was called. Also fix up rpc_run_task() to do the same (for consistency). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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43ac3f2961
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7a1218a277
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@ -605,11 +605,14 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
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int status;
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atomic_inc(&data->count);
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/*
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* If rpc_run_task() ends up calling ->rpc_release(), we
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* want to ensure that it takes the 'error' code path.
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*/
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data->rpc_status = -ENOMEM;
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task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data);
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if (IS_ERR(task)) {
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nfs4_opendata_free(data);
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if (IS_ERR(task))
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return PTR_ERR(task);
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}
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status = nfs4_wait_for_completion_rpc_task(task);
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if (status != 0) {
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data->cancelled = 1;
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@ -708,11 +711,14 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
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int status;
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atomic_inc(&data->count);
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/*
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* If rpc_run_task() ends up calling ->rpc_release(), we
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* want to ensure that it takes the 'error' code path.
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*/
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data->rpc_status = -ENOMEM;
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task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data);
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if (IS_ERR(task)) {
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nfs4_opendata_free(data);
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if (IS_ERR(task))
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return PTR_ERR(task);
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}
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status = nfs4_wait_for_completion_rpc_task(task);
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if (status != 0) {
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data->cancelled = 1;
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@ -2959,10 +2965,8 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
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data->rpc_status = 0;
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task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data);
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if (IS_ERR(task)) {
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nfs4_delegreturn_release(data);
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if (IS_ERR(task))
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return PTR_ERR(task);
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}
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status = nfs4_wait_for_completion_rpc_task(task);
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if (status == 0) {
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status = data->rpc_status;
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@ -3182,7 +3186,6 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
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struct nfs_seqid *seqid)
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{
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struct nfs4_unlockdata *data;
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struct rpc_task *task;
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data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
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if (data == NULL) {
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@ -3192,10 +3195,7 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
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/* Unlock _before_ we do the RPC call */
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do_vfs_lock(fl->fl_file, fl);
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task = rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
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if (IS_ERR(task))
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nfs4_locku_release_calldata(data);
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return task;
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return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
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}
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static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
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@ -3376,10 +3376,8 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
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data->arg.reclaim = 1;
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task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC,
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&nfs4_lock_ops, data);
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if (IS_ERR(task)) {
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nfs4_lock_release(data);
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if (IS_ERR(task))
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return PTR_ERR(task);
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}
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ret = nfs4_wait_for_completion_rpc_task(task);
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if (ret == 0) {
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ret = data->rpc_status;
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@ -495,15 +495,16 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags,
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int status;
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/* If this client is slain all further I/O fails */
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status = -EIO;
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if (clnt->cl_dead)
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return -EIO;
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goto out_release;
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flags |= RPC_TASK_ASYNC;
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/* Create/initialize a new RPC task */
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status = -ENOMEM;
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if (!(task = rpc_new_task(clnt, flags, tk_ops, data)))
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goto out;
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goto out_release;
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/* Mask signals on GSS_AUTH upcalls */
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rpc_task_sigmask(task, &oldset);
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@ -518,7 +519,10 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags,
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rpc_release_task(task);
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rpc_restore_sigmask(&oldset);
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out:
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return status;
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out_release:
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if (tk_ops->rpc_release != NULL)
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tk_ops->rpc_release(data);
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return status;
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}
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@ -921,8 +921,11 @@ struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
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{
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struct rpc_task *task;
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task = rpc_new_task(clnt, flags, ops, data);
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if (task == NULL)
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if (task == NULL) {
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if (ops->rpc_release != NULL)
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ops->rpc_release(data);
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return ERR_PTR(-ENOMEM);
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}
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atomic_inc(&task->tk_count);
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rpc_execute(task);
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return task;
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