Merge branch 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc

* 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits)
  Remove commented-out code copied from NFS
  NFS: Switch from intr mount option to TASK_KILLABLE
  Add wait_for_completion_killable
  Add wait_event_killable
  Add schedule_timeout_killable
  Use mutex_lock_killable in vfs_readdir
  Add mutex_lock_killable
  Use lock_page_killable
  Add lock_page_killable
  Add fatal_signal_pending
  Add TASK_WAKEKILL
  exit: Use task_is_*
  signal: Use task_is_*
  sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL
  ptrace: Use task_is_*
  power: Use task_is_*
  wait: Use TASK_NORMAL
  proc/base.c: Use task_is_*
  proc/array.c: Use TASK_REPORT
  perfmon: Use task_is_*
  ...

Fixed up conflicts in NFS/sunrpc manually..

4 files changed, 10 insertions, 66 deletions

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index bcd9abdb031..eca941ce298 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -385,7 +385,6 @@ rpcauth_bindcred(struct rpc_task *task)
 		.group_info = current->group_info,
 	};
 	struct rpc_cred *ret;
-	sigset_t oldset;
 	int flags = 0;
 
 	dprintk("RPC: %5u looking up %s cred\n",
@@ -393,9 +392,7 @@ rpcauth_bindcred(struct rpc_task *task)
 	get_group_info(acred.group_info);
 	if (task->tk_flags & RPC_TASK_ROOTCREDS)
 		flags |= RPCAUTH_LOOKUP_ROOTCREDS;
-	rpc_clnt_sigmask(task->tk_client, &oldset);
 	ret = auth->au_ops->lookup_cred(auth, &acred, flags);
-	rpc_clnt_sigunmask(task->tk_client, &oldset);
 	if (!IS_ERR(ret))
 		task->tk_msg.rpc_cred = ret;
 	else
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 924916ceaa4..0998e6d0966 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -313,7 +313,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 		return clnt;
 
 	if (!(args->flags & RPC_CLNT_CREATE_NOPING)) {
-		int err = rpc_ping(clnt, RPC_TASK_SOFT|RPC_TASK_NOINTR);
+		int err = rpc_ping(clnt, RPC_TASK_SOFT);
 		if (err != 0) {
 			rpc_shutdown_client(clnt);
 			return ERR_PTR(err);
@@ -324,8 +324,6 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 	if (args->flags & RPC_CLNT_CREATE_HARDRTRY)
 		clnt->cl_softrtry = 0;
 
-	if (args->flags & RPC_CLNT_CREATE_INTR)
-		clnt->cl_intr = 1;
 	if (args->flags & RPC_CLNT_CREATE_AUTOBIND)
 		clnt->cl_autobind = 1;
 	if (args->flags & RPC_CLNT_CREATE_DISCRTRY)
@@ -493,7 +491,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
 	clnt->cl_prog     = program->number;
 	clnt->cl_vers     = version->number;
 	clnt->cl_stats    = program->stats;
-	err = rpc_ping(clnt, RPC_TASK_SOFT|RPC_TASK_NOINTR);
+	err = rpc_ping(clnt, RPC_TASK_SOFT);
 	if (err != 0) {
 		rpc_shutdown_client(clnt);
 		clnt = ERR_PTR(err);
@@ -515,46 +513,6 @@ static const struct rpc_call_ops rpc_default_ops = {
 	.rpc_call_done = rpc_default_callback,
 };
 
-/*
- *	Export the signal mask handling for synchronous code that
- *	sleeps on RPC calls
- */
-#define RPC_INTR_SIGNALS (sigmask(SIGHUP) | sigmask(SIGINT) | sigmask(SIGQUIT) | sigmask(SIGTERM))
-
-static void rpc_save_sigmask(sigset_t *oldset, int intr)
-{
-	unsigned long	sigallow = sigmask(SIGKILL);
-	sigset_t sigmask;
-
-	/* Block all signals except those listed in sigallow */
-	if (intr)
-		sigallow |= RPC_INTR_SIGNALS;
-	siginitsetinv(&sigmask, sigallow);
-	sigprocmask(SIG_BLOCK, &sigmask, oldset);
-}
-
-static void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
-{
-	rpc_save_sigmask(oldset, !RPC_TASK_UNINTERRUPTIBLE(task));
-}
-
-static void rpc_restore_sigmask(sigset_t *oldset)
-{
-	sigprocmask(SIG_SETMASK, oldset, NULL);
-}
-
-void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset)
-{
-	rpc_save_sigmask(oldset, clnt->cl_intr);
-}
-EXPORT_SYMBOL_GPL(rpc_clnt_sigmask);
-
-void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset)
-{
-	rpc_restore_sigmask(oldset);
-}
-EXPORT_SYMBOL_GPL(rpc_clnt_sigunmask);
-
 /**
  * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
  * @task_setup_data: pointer to task initialisation data
@@ -562,7 +520,6 @@ EXPORT_SYMBOL_GPL(rpc_clnt_sigunmask);
 struct rpc_task *rpc_run_task(const struct rpc_task_setup *task_setup_data)
 {
 	struct rpc_task *task, *ret;
-	sigset_t oldset;
 
 	task = rpc_new_task(task_setup_data);
 	if (task == NULL) {
@@ -578,13 +535,7 @@ struct rpc_task *rpc_run_task(const struct rpc_task_setup *task_setup_data)
 		goto out;
 	}
 	atomic_inc(&task->tk_count);
-	/* Mask signals on synchronous RPC calls and RPCSEC_GSS upcalls */
-	if (!RPC_IS_ASYNC(task)) {
-		rpc_task_sigmask(task, &oldset);
-		rpc_execute(task);
-		rpc_restore_sigmask(&oldset);
-	} else
-		rpc_execute(task);
+	rpc_execute(task);
 	ret = task;
 out:
 	return ret;
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index fa5b8f202d5..3164a0871cf 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -120,8 +120,7 @@ static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
 		.program	= &rpcb_program,
 		.version	= version,
 		.authflavor	= RPC_AUTH_UNIX,
-		.flags		= (RPC_CLNT_CREATE_NOPING |
-				   RPC_CLNT_CREATE_INTR),
+		.flags		= RPC_CLNT_CREATE_NOPING,
 	};
 
 	switch (srvaddr->sa_family) {
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 40ce6f6672d..4c669121e60 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -245,9 +245,9 @@ void rpc_init_wait_queue(struct rpc_wait_queue *queue, const char *qname)
 }
 EXPORT_SYMBOL_GPL(rpc_init_wait_queue);
 
-static int rpc_wait_bit_interruptible(void *word)
+static int rpc_wait_bit_killable(void *word)
 {
-	if (signal_pending(current))
+	if (fatal_signal_pending(current))
 		return -ERESTARTSYS;
 	schedule();
 	return 0;
@@ -299,9 +299,9 @@ static void rpc_mark_complete_task(struct rpc_task *task)
 int __rpc_wait_for_completion_task(struct rpc_task *task, int (*action)(void *))
 {
 	if (action == NULL)
-		action = rpc_wait_bit_interruptible;
+		action = rpc_wait_bit_killable;
 	return wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE,
-			action, TASK_INTERRUPTIBLE);
+			action, TASK_KILLABLE);
 }
 EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
 
@@ -696,10 +696,9 @@ static void __rpc_execute(struct rpc_task *task)
 
 		/* sync task: sleep here */
 		dprintk("RPC: %5u sync task going to sleep\n", task->tk_pid);
-		/* Note: Caller should be using rpc_clnt_sigmask() */
 		status = out_of_line_wait_on_bit(&task->tk_runstate,
-				RPC_TASK_QUEUED, rpc_wait_bit_interruptible,
-				TASK_INTERRUPTIBLE);
+				RPC_TASK_QUEUED, rpc_wait_bit_killable,
+				TASK_KILLABLE);
 		if (status == -ERESTARTSYS) {
 			/*
 			 * When a sync task receives a signal, it exits with
@@ -840,8 +839,6 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta
 		kref_get(&task->tk_client->cl_kref);
 		if (task->tk_client->cl_softrtry)
 			task->tk_flags |= RPC_TASK_SOFT;
-		if (!task->tk_client->cl_intr)
-			task->tk_flags |= RPC_TASK_NOINTR;
 	}
 
 	if (task->tk_ops->rpc_call_prepare != NULL)