20 files changed, 161 insertions, 497 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index bef79776b388..4ce895a4b5ba 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4022,11 +4022,11 @@ S:	Supported
 
 XFS FILESYSTEM
 P:	Silicon Graphics Inc
-P:	Tim Shimmin, David Chatterton
+P:	Tim Shimmin
 M:	xfs-masters@oss.sgi.com
 L:	xfs@oss.sgi.com
 W:	http://oss.sgi.com/projects/xfs
-T:	git git://oss.sgi.com:8090/xfs/xfs-2.6
+T:	git git://oss.sgi.com:8090/xfs/xfs-2.6.git
 S:	Supported
 
 XILINX UARTLITE SERIAL DRIVER
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c
index 81a2b92ab0c2..6ffbab77ae4d 100644
--- a/arch/s390/appldata/appldata_base.c
+++ b/arch/s390/appldata/appldata_base.c
@@ -535,8 +535,7 @@ void appldata_unregister_ops(struct appldata_ops *ops)
 
 /******************************* init / exit *********************************/
 
-static void
-appldata_online_cpu(int cpu)
+static void __cpuinit appldata_online_cpu(int cpu)
 {
 	init_virt_timer(&per_cpu(appldata_timer, cpu));
 	per_cpu(appldata_timer, cpu).function = appldata_timer_function;
@@ -580,7 +579,7 @@ appldata_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block appldata_nb = {
+static struct notifier_block __cpuinitdata appldata_nb = {
 	.notifier_call = appldata_cpu_notify,
 };
 
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index c8a2212014e0..6234c6978a1f 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -769,10 +769,13 @@ mcck_return:
 
 	RESTORE_ALL __LC_RETURN_MCCK_PSW,0
 
-#ifdef CONFIG_SMP
 /*
  * Restart interruption handler, kick starter for additional CPUs
  */
+#ifdef CONFIG_SMP
+#ifndef CONFIG_HOTPLUG_CPU
+	.section .init.text,"ax"
+#endif
 	.globl restart_int_handler
 restart_int_handler:
 	l	%r15,__LC_SAVE_AREA+60	# load ksp
@@ -785,6 +788,9 @@ restart_int_handler:
 	br	%r14			# branch to start_secondary
 restart_addr:
 	.long	start_secondary
+#ifndef CONFIG_HOTPLUG_CPU
+	.previous
+#endif
 #else
 /*
  * If we do not run with SMP enabled, let the new CPU crash ...
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 93745fd8f555..685f11faa4bc 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -745,10 +745,13 @@ mcck_return:
 #endif
 	lpswe	__LC_RETURN_MCCK_PSW	# back to caller
 
-#ifdef CONFIG_SMP
 /*
  * Restart interruption handler, kick starter for additional CPUs
  */
+#ifdef CONFIG_SMP
+#ifndef CONFIG_HOTPLUG_CPU
+	.section .init.text,"ax"
+#endif
 	.globl restart_int_handler
 restart_int_handler:
 	lg	%r15,__LC_SAVE_AREA+120 # load ksp
@@ -759,6 +762,9 @@ restart_int_handler:
 	lmg	%r6,%r15,__SF_GPRS(%r15) # load registers from clone
 	stosm	__SF_EMPTY(%r15),0x04	# now we can turn dat on
 	jg	start_secondary
+#ifndef CONFIG_HOTPLUG_CPU
+	.previous
+#endif
 #else
 /*
  * If we do not run with SMP enabled, let the new CPU crash ...
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 51d6309e7f3b..7e1bfb984064 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -300,6 +300,7 @@ static void __init setup_zfcpdump(unsigned int console_devno)
 	else
 		sprintf(str, "cio_ignore=all,!0.0.%04x",
 			ipl_info.data.fcp.dev_id.devno);
+	strcat(COMMAND_LINE, " ");
 	strcat(COMMAND_LINE, str);
 	console_loglevel = 2;
 }
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index cbfe73034c30..ee9186f8fb08 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -253,19 +253,22 @@ void die(const char * str, struct pt_regs * regs, long err)
 {
 	static int die_counter;
 
+	oops_enter();
 	debug_stop_all();
 	console_verbose();
 	spin_lock_irq(&die_lock);
 	bust_spinlocks(1);
 	printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
-        show_regs(regs);
+	print_modules();
+	show_regs(regs);
 	bust_spinlocks(0);
-        spin_unlock_irq(&die_lock);
+	spin_unlock_irq(&die_lock);
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception: panic_on_oops");
-        do_exit(SIGSEGV);
+	oops_exit();
+	do_exit(SIGSEGV);
 }
 
 static void inline
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index d75f7ffbb02e..37bf65348372 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -727,13 +727,15 @@ static int mptspi_slave_configure(struct scsi_device *sdev)
 	struct _MPT_SCSI_HOST *hd =
 		(struct _MPT_SCSI_HOST *)sdev->host->hostdata;
 	VirtTarget *vtarget = scsi_target(sdev)->hostdata;
-	int ret = mptscsih_slave_configure(sdev);
+	int ret;
+
+	mptspi_initTarget(hd, vtarget, sdev);
+
+	ret = mptscsih_slave_configure(sdev);
 
 	if (ret)
 		return ret;
 
-	mptspi_initTarget(hd, vtarget, sdev);
-
 	ddvprintk((MYIOC_s_INFO_FMT "id=%d min_period=0x%02x"
 		" max_offset=0x%02x max_width=%d\n", hd->ioc->name,
 		sdev->id, spi_min_period(scsi_target(sdev)),
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 66eb0688d523..4e711a985d59 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -267,7 +267,9 @@ struct zcore_header {
 	u64 tod;
 	cpuid_t cpu_id;
 	u32 arch_id;
+	u32 volnr;
 	u32 build_arch;
+	u64 rmem_size;
 	char pad2[4016];
 } __attribute__((packed,__aligned__(16)));
 
@@ -559,6 +561,7 @@ static void __init zcore_header_init(int arch, struct zcore_header *hdr)
 	else
 		hdr->arch_id = DUMP_ARCH_S390;
 	hdr->mem_size = sys_info.mem_size;
+	hdr->rmem_size = sys_info.mem_size;
 	hdr->mem_end = sys_info.mem_size;
 	hdr->num_pages = sys_info.mem_size / PAGE_SIZE;
 	hdr->tod = get_clock();
diff --git a/drivers/scsi/esp_scsi.c b/drivers/scsi/esp_scsi.c
index ec71061aef61..71caf2ded6ba 100644
--- a/drivers/scsi/esp_scsi.c
+++ b/drivers/scsi/esp_scsi.c
@@ -2033,6 +2033,7 @@ static void esp_reset_cleanup(struct esp *esp)
 			starget_for_each_device(tp->starget, NULL,
 						esp_clear_hold);
 	}
+	esp->flags &= ~ESP_FLAG_RESETTING;
 }
 
 /* Runs under host->lock */
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 86fb671a8bcc..ed90403f0ee7 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -159,7 +159,7 @@ xfs_iozero(
 		if (status)
 			goto unlock;
 
-		memclear_highpage_flush(page, offset, bytes);
+		zero_user_page(page, offset, bytes, KM_USER0);
 
 		status = mapping->a_ops->commit_write(NULL, page, offset,
 							offset + bytes);
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index e0fcea8c64c3..5cb480af65d5 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -216,6 +216,11 @@ static inline void cpu_relax(void)
 	barrier();
 }
 
+static inline void psw_set_key(unsigned int key)
+{
+	asm volatile("spka 0(%0)" : : "d" (key));
+}
+
 /*
  * Set PSW to specified value.
  */
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index fa6ca87080e8..332ee73688fc 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -470,14 +470,7 @@ struct user_regs_struct
 #define regs_return_value(regs)((regs)->gprs[2])
 #define profile_pc(regs) instruction_pointer(regs)
 extern void show_regs(struct pt_regs * regs);
-#endif
-
-static inline void
-psw_set_key(unsigned int key)
-{
-	asm volatile("spka 0(%0)" : : "d" (key));
-}
-
+#endif /* __KERNEL__ */
 #endif /* __ASSEMBLY__ */
 
 #endif /* _S390_PTRACE_H */
diff --git a/include/linux/futex.h b/include/linux/futex.h
index 899fc7f20edd..99650353adfa 100644
--- a/include/linux/futex.h
+++ b/include/linux/futex.h
@@ -17,7 +17,6 @@ union ktime;
 #define FUTEX_LOCK_PI		6
 #define FUTEX_UNLOCK_PI		7
 #define FUTEX_TRYLOCK_PI	8
-#define FUTEX_CMP_REQUEUE_PI	9
 
 #define FUTEX_PRIVATE_FLAG	128
 #define FUTEX_CMD_MASK		~FUTEX_PRIVATE_FLAG
@@ -98,14 +97,9 @@ struct robust_list_head {
 #define FUTEX_OWNER_DIED	0x40000000
 
 /*
- * Some processes have been requeued on this PI-futex
- */
-#define FUTEX_WAITER_REQUEUED	0x20000000
-
-/*
  * The rest of the robust-futex field is for the TID:
  */
-#define FUTEX_TID_MASK		0x0fffffff
+#define FUTEX_TID_MASK		0x3fffffff
 
 /*
  * This limit protects against a deliberately circular list.
@@ -139,7 +133,6 @@ handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi);
 #define FUT_OFF_MMSHARED 2 /* We set bit 1 if key has a reference on mm */
 
 union futex_key {
-	u32 __user *uaddr;
 	struct {
 		unsigned long pgoff;
 		struct inode *inode;
diff --git a/kernel/futex.c b/kernel/futex.c
index 3b7f7713d9a4..df248f5e0836 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -56,12 +56,6 @@
 
 #include "rtmutex_common.h"
 
-#ifdef CONFIG_DEBUG_RT_MUTEXES
-# include "rtmutex-debug.h"
-#else
-# include "rtmutex.h"
-#endif
-
 #define FUTEX_HASHBITS (CONFIG_BASE_SMALL ? 4 : 8)
 
 /*
@@ -111,12 +105,6 @@ struct futex_q {
 	/* Optional priority inheritance state: */
 	struct futex_pi_state *pi_state;
 	struct task_struct *task;
-
-	/*
-	 * This waiter is used in case of requeue from a
-	 * normal futex to a PI-futex
-	 */
-	struct rt_mutex_waiter waiter;
 };
 
 /*
@@ -216,9 +204,6 @@ int get_futex_key(u32 __user *uaddr, struct rw_semaphore *fshared,
 	if (unlikely((vma->vm_flags & (VM_IO|VM_READ)) != VM_READ))
 		return (vma->vm_flags & VM_IO) ? -EPERM : -EACCES;
 
-	/* Save the user address in the ley */
-	key->uaddr = uaddr;
-
 	/*
 	 * Private mappings are handled in a simple way.
 	 *
@@ -636,8 +621,6 @@ static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
 		int ret = 0;
 
 		newval = FUTEX_WAITERS | new_owner->pid;
-		/* Keep the FUTEX_WAITER_REQUEUED flag if it was set */
-		newval |= (uval & FUTEX_WAITER_REQUEUED);
 
 		pagefault_disable();
 		curval = futex_atomic_cmpxchg_inatomic(uaddr, uval, newval);
@@ -750,259 +733,6 @@ out:
 }
 
 /*
- * Called from futex_requeue_pi.
- * Set FUTEX_WAITERS and FUTEX_WAITER_REQUEUED flags on the
- * PI-futex value; search its associated pi_state if an owner exist
- * or create a new one without owner.
- */
-static inline int
-lookup_pi_state_for_requeue(u32 __user *uaddr, struct futex_hash_bucket *hb,
-			    union futex_key *key,
-			    struct futex_pi_state **pi_state)
-{
-	u32 curval, uval, newval;
-
-retry:
-	/*
-	 * We can't handle a fault cleanly because we can't
-	 * release the locks here. Simply return the fault.
-	 */
-	if (get_futex_value_locked(&curval, uaddr))
-		return -EFAULT;
-
-	/* set the flags FUTEX_WAITERS and FUTEX_WAITER_REQUEUED */
-	if ((curval & (FUTEX_WAITERS | FUTEX_WAITER_REQUEUED))
-	    != (FUTEX_WAITERS | FUTEX_WAITER_REQUEUED)) {
-		/*
-		 * No waiters yet, we prepare the futex to have some waiters.
-		 */
-
-		uval = curval;
-		newval = uval | FUTEX_WAITERS | FUTEX_WAITER_REQUEUED;
-
-		pagefault_disable();
-		curval = futex_atomic_cmpxchg_inatomic(uaddr, uval, newval);
-		pagefault_enable();
-
-		if (unlikely(curval == -EFAULT))
-			return -EFAULT;
-		if (unlikely(curval != uval))
-			goto retry;
-	}
-
-	if (!(curval & FUTEX_TID_MASK)
-	    || lookup_pi_state(curval, hb, key, pi_state)) {
-		/* the futex has no owner (yet) or the lookup failed:
-		   allocate one pi_state without owner */
-
-		*pi_state = alloc_pi_state();
-
-		/* Already stores the key: */
-		(*pi_state)->key = *key;
-
-		/* init the mutex without owner */
-		__rt_mutex_init(&(*pi_state)->pi_mutex, NULL);
-	}
-
-	return 0;
-}
-
-/*
- * Keep the first nr_wake waiter from futex1, wake up one,
- * and requeue the next nr_requeue waiters following hashed on
- * one physical page to another physical page (PI-futex uaddr2)
- */
-static int futex_requeue_pi(u32 __user *uaddr1,
-			    struct rw_semaphore *fshared,
-			    u32 __user *uaddr2,
-			    int nr_wake, int nr_requeue, u32 *cmpval)
-{
-	union futex_key key1, key2;
-	struct futex_hash_bucket *hb1, *hb2;
-	struct plist_head *head1;
-	struct futex_q *this, *next;
-	struct futex_pi_state *pi_state2 = NULL;
-	struct rt_mutex_waiter *waiter, *top_waiter = NULL;
-	struct rt_mutex *lock2 = NULL;
-	int ret, drop_count = 0;
-
-	if (refill_pi_state_cache())
-		return -ENOMEM;
-
-retry:
-	/*
-	 * First take all the futex related locks:
-	 */
-	if (fshared)
-		down_read(fshared);
-
-	ret = get_futex_key(uaddr1, fshared, &key1);
-	if (unlikely(ret != 0))
-		goto out;
-	ret = get_futex_key(uaddr2, fshared, &key2);
-	if (unlikely(ret != 0))
-		goto out;
-
-	hb1 = hash_futex(&key1);
-	hb2 = hash_futex(&key2);
-
-	double_lock_hb(hb1, hb2);
-
-	if (likely(cmpval != NULL)) {
-		u32 curval;
-
-		ret = get_futex_value_locked(&curval, uaddr1);
-
-		if (unlikely(ret)) {
-			spin_unlock(&hb1->lock);
-			if (hb1 != hb2)
-				spin_unlock(&hb2->lock);
-
-			/*
-			 * If we would have faulted, release mmap_sem, fault
-			 * it in and start all over again.
-			 */
-			if (fshared)
-				up_read(fshared);
-
-			ret = get_user(curval, uaddr1);
-
-			if (!ret)
-				goto retry;
-
-			return ret;
-		}
-		if (curval != *cmpval) {
-			ret = -EAGAIN;
-			goto out_unlock;
-		}
-	}
-
-	head1 = &hb1->chain;
-	plist_for_each_entry_safe(this, next, head1, list) {
-		if (!match_futex (&this->key, &key1))
-			continue;
-		if (++ret <= nr_wake) {
-			wake_futex(this);
-		} else {
-			/*
-			 * FIRST: get and set the pi_state
-			 */
-			if (!pi_state2) {
-				int s;
-				/* do this only the first time we requeue someone */
-				s = lookup_pi_state_for_requeue(uaddr2, hb2,
-								&key2, &pi_state2);
-				if (s) {
-					ret = s;
-					goto out_unlock;
-				}
-
-				lock2 = &pi_state2->pi_mutex;
-				spin_lock(&lock2->wait_lock);
-
-				/* Save the top waiter of the wait_list */
-				if (rt_mutex_has_waiters(lock2))
-					top_waiter = rt_mutex_top_waiter(lock2);
-			} else
-				atomic_inc(&pi_state2->refcount);
-
-
-			this->pi_state = pi_state2;
-
-			/*
-			 * SECOND: requeue futex_q to the correct hashbucket
-			 */
-
-			/*
-			 * If key1 and key2 hash to the same bucket, no need to
-			 * requeue.
-			 */
-			if (likely(head1 != &hb2->chain)) {
-				plist_del(&this->list, &hb1->chain);
-				plist_add(&this->list, &hb2->chain);
-				this->lock_ptr = &hb2->lock;
-#ifdef CONFIG_DEBUG_PI_LIST
-				this->list.plist.lock = &hb2->lock;
-#endif
-			}
-			this->key = key2;
-			get_futex_key_refs(&key2);
-			drop_count++;
-
-
-			/*
-			 * THIRD: queue it to lock2
-			 */
-			spin_lock_irq(&this->task->pi_lock);
-			waiter = &this->waiter;
-			waiter->task = this->task;
-			waiter->lock = lock2;
-			plist_node_init(&waiter->list_entry, this->task->prio);
-			plist_node_init(&waiter->pi_list_entry, this->task->prio);
-			plist_add(&waiter->list_entry, &lock2->wait_list);
-			this->task->pi_blocked_on = waiter;
-			spin_unlock_irq(&this->task->pi_lock);
-
-			if (ret - nr_wake >= nr_requeue)
-				break;
-		}
-	}
-
-	/* If we've requeued some tasks and the top_waiter of the rt_mutex
-	   has changed, we must adjust the priority of the owner, if any */
-	if (drop_count) {
-		struct task_struct *owner = rt_mutex_owner(lock2);
-		if (owner &&
-		    (top_waiter != (waiter = rt_mutex_top_waiter(lock2)))) {
-			int chain_walk = 0;
-
-			spin_lock_irq(&owner->pi_lock);
-			if (top_waiter)
-				plist_del(&top_waiter->pi_list_entry, &owner->pi_waiters);
-			else
-				/*
-				 * There was no waiters before the requeue,
-				 * the flag must be updated
-				 */
-				mark_rt_mutex_waiters(lock2);
-
-			plist_add(&waiter->pi_list_entry, &owner->pi_waiters);
-			__rt_mutex_adjust_prio(owner);
-			if (owner->pi_blocked_on) {
-				chain_walk = 1;
-				get_task_struct(owner);
-			}
-
-			spin_unlock_irq(&owner->pi_lock);
-			spin_unlock(&lock2->wait_lock);
-
-			if (chain_walk)
-				rt_mutex_adjust_prio_chain(owner, 0, lock2, NULL,
-							   current);
-		} else {
-			/* No owner or the top_waiter does not change */
-			mark_rt_mutex_waiters(lock2);
-			spin_unlock(&lock2->wait_lock);
-		}
-	}
-
-out_unlock:
-	spin_unlock(&hb1->lock);
-	if (hb1 != hb2)
-		spin_unlock(&hb2->lock);
-
-	/* drop_futex_key_refs() must be called outside the spinlocks. */
-	while (--drop_count >= 0)
-		drop_futex_key_refs(&key1);
-
-out:
-	if (fshared)
-		up_read(fshared);
-	return ret;
-}
-
-/*
  * Wake up all waiters hashed on the physical page that is mapped
  * to this virtual address:
  */
@@ -1384,7 +1114,6 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
 
 	while (!ret) {
 		newval = (uval & FUTEX_OWNER_DIED) | newtid;
-		newval |= (uval & FUTEX_WAITER_REQUEUED);
 
 		pagefault_disable();
 		curval = futex_atomic_cmpxchg_inatomic(uaddr,
@@ -1416,7 +1145,7 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
 	struct futex_q q;
 	u32 uval;
 	int ret;
-	struct hrtimer_sleeper t, *to = NULL;
+	struct hrtimer_sleeper t;
 	int rem = 0;
 
 	q.pi_state = NULL;
@@ -1472,14 +1201,6 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
 	if (uval != val)
 		goto out_unlock_release_sem;
 
-	/*
-	 * This rt_mutex_waiter structure is prepared here and will
-	 * be used only if this task is requeued from a normal futex to
-	 * a PI-futex with futex_requeue_pi.
-	 */
-	debug_rt_mutex_init_waiter(&q.waiter);
-	q.waiter.task = NULL;
-
 	/* Only actually queue if *uaddr contained val.  */
 	__queue_me(&q, hb);
 
@@ -1510,7 +1231,6 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
 		if (!abs_time)
 			schedule();
 		else {
-			to = &t;
 			hrtimer_init(&t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
 			hrtimer_init_sleeper(&t, current);
 			t.timer.expires = *abs_time;
@@ -1538,67 +1258,6 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
 	 * we are the only user of it.
 	 */
 
-	if (q.pi_state) {
-		/*
-		 * We were woken but have been requeued on a PI-futex.
-		 * We have to complete the lock acquisition by taking
-		 * the rtmutex.
-		 */
-
-		struct rt_mutex *lock = &q.pi_state->pi_mutex;
-
-		spin_lock(&lock->wait_lock);
-		if (unlikely(q.waiter.task)) {
-			remove_waiter(lock, &q.waiter);
-		}
-		spin_unlock(&lock->wait_lock);
-
-		if (rem)
-			ret = -ETIMEDOUT;
-		else
-			ret = rt_mutex_timed_lock(lock, to, 1);
-
-		if (fshared)
-			down_read(fshared);
-		spin_lock(q.lock_ptr);
-
-		/*
-		 * Got the lock. We might not be the anticipated owner if we
-		 * did a lock-steal - fix up the PI-state in that case.
-		 */
-		if (!ret && q.pi_state->owner != curr) {
-			/*
-			 * We MUST play with the futex we were requeued on,
-			 * NOT the current futex.
-			 * We can retrieve it from the key of the pi_state
-			 */
-			uaddr = q.pi_state->key.uaddr;
-
-			ret = fixup_pi_state_owner(uaddr, &q, curr);
-		} else {
-			/*
-			 * Catch the rare case, where the lock was released
-			 * when we were on the way back before we locked
-			 * the hash bucket.
-			 */
-			if (ret && q.pi_state->owner == curr) {
-				if (rt_mutex_trylock(&q.pi_state->pi_mutex))
-					ret = 0;
-			}
-		}
-
-		/* Unqueue and drop the lock */
-		unqueue_me_pi(&q);
-		if (fshared)
-			up_read(fshared);
-
-		debug_rt_mutex_free_waiter(&q.waiter);
-
-		return ret;
-	}
-
-	debug_rt_mutex_free_waiter(&q.waiter);
-
 	/* If we were woken (and unqueued), we succeeded, whatever. */
 	if (!unqueue_me(&q))
 		return 0;
@@ -1648,51 +1307,6 @@ static long futex_wait_restart(struct restart_block *restart)
 }
 
 
-static void set_pi_futex_owner(struct futex_hash_bucket *hb,
-			       union futex_key *key, struct task_struct *p)
-{
-	struct plist_head *head;
-	struct futex_q *this, *next;
-	struct futex_pi_state *pi_state = NULL;
-	struct rt_mutex *lock;
-
-	/* Search a waiter that should already exists */
-
-	head = &hb->chain;
-
-	plist_for_each_entry_safe(this, next, head, list) {
-		if (match_futex (&this->key, key)) {
-			pi_state = this->pi_state;
-			break;
-		}
-	}
-
-	BUG_ON(!pi_state);
-
-	/* set p as pi_state's owner */
-	lock = &pi_state->pi_mutex;
-
-	spin_lock(&lock->wait_lock);
-	spin_lock_irq(&p->pi_lock);
-
-	list_add(&pi_state->list, &p->pi_state_list);
-	pi_state->owner = p;
-
-
-	/* set p as pi_mutex's owner */
-	debug_rt_mutex_proxy_lock(lock, p);
-	WARN_ON(rt_mutex_owner(lock));
-	rt_mutex_set_owner(lock, p, 0);
-	rt_mutex_deadlock_account_lock(lock, p);
-
-	plist_add(&rt_mutex_top_waiter(lock)->pi_list_entry,
-		  &p->pi_waiters);
-	__rt_mutex_adjust_prio(p);
-
-	spin_unlock_irq(&p->pi_lock);
-	spin_unlock(&lock->wait_lock);
-}
-
 /*
  * Userspace tried a 0 -> TID atomic transition of the futex value
  * and failed. The kernel side here does the whole locking operation:
@@ -1753,8 +1367,7 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
 	 * situation and we return success to user space.
 	 */
 	if (unlikely((curval & FUTEX_TID_MASK) == current->pid)) {
-		if (!(curval & FUTEX_WAITER_REQUEUED))
-			ret = -EDEADLK;
+		ret = -EDEADLK;
 		goto out_unlock_release_sem;
 	}
 
@@ -1774,14 +1387,14 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
 
 	/*
 	 * There are two cases, where a futex might have no owner (the
-	 * owner TID is 0): OWNER_DIED or REQUEUE. We take over the
-	 * futex in this case. We also do an unconditional take over,
-	 * when the owner of the futex died.
+	 * owner TID is 0): OWNER_DIED. We take over the futex in this
+	 * case. We also do an unconditional take over, when the owner
+	 * of the futex died.
 	 *
 	 * This is safe as we are protected by the hash bucket lock !
 	 */
 	if (unlikely(ownerdied || !(curval & FUTEX_TID_MASK))) {
-		/* Keep the OWNER_DIED and REQUEUE bits */
+		/* Keep the OWNER_DIED bit */
 		newval = (curval & ~FUTEX_TID_MASK) | current->pid;
 		ownerdied = 0;
 		lock_taken = 1;
@@ -1797,14 +1410,10 @@ static int futex_lock_pi(u32 __user *uaddr, struct rw_semaphore *fshared,
 		goto retry_locked;
 
 	/*
-	 * We took the lock due to requeue or owner died take over.
+	 * We took the lock due to owner died take over.
 	 */
-	if (unlikely(lock_taken)) {
-		/* For requeue we need to fixup the pi_futex */
-		if (curval & FUTEX_WAITER_REQUEUED)
-			set_pi_futex_owner(hb, &q.key, curr);
+	if (unlikely(lock_taken))
 		goto out_unlock_release_sem;
-	}
 
 	/*
 	 * We dont have the lock. Look up the PI state (or create it if
@@ -2289,8 +1898,6 @@ retry:
 		 * userspace.
 		 */
 		mval = (uval & FUTEX_WAITERS) | FUTEX_OWNER_DIED;
-		/* Also keep the FUTEX_WAITER_REQUEUED flag if set */
-		mval |= (uval & FUTEX_WAITER_REQUEUED);
 		nval = futex_atomic_cmpxchg_inatomic(uaddr, uval, mval);
 
 		if (nval == -EFAULT)
@@ -2427,9 +2034,6 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
 	case FUTEX_TRYLOCK_PI:
 		ret = futex_lock_pi(uaddr, fshared, 0, timeout, 1);
 		break;
-	case FUTEX_CMP_REQUEUE_PI:
-		ret = futex_requeue_pi(uaddr, fshared, uaddr2, val, val2, &val3);
-		break;
 	default:
 		ret = -ENOSYS;
 	}
@@ -2460,8 +2064,7 @@ asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
 	/*
 	 * requeue parameter in 'utime' if cmd == FUTEX_REQUEUE.
 	 */
-	if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE
-	    || cmd == FUTEX_CMP_REQUEUE_PI)
+	if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE)
 		val2 = (u32) (unsigned long) utime;
 
 	return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 27478948b318..f7921360efad 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -157,8 +157,7 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 			t = ktime_add(ktime_get(), t);
 		tp = &t;
 	}
-	if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE
-	    || cmd == FUTEX_CMP_REQUEUE_PI)
+	if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE)
 		val2 = (int) (unsigned long) utime;
 
 	return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index a6fbb4130521..17d28ce20300 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -56,7 +56,7 @@
  * state.
  */
 
-void
+static void
 rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner,
 		   unsigned long mask)
 {
@@ -81,6 +81,29 @@ static void fixup_rt_mutex_waiters(struct rt_mutex *lock)
 }
 
 /*
+ * We can speed up the acquire/release, if the architecture
+ * supports cmpxchg and if there's no debugging state to be set up
+ */
+#if defined(__HAVE_ARCH_CMPXCHG) && !defined(CONFIG_DEBUG_RT_MUTEXES)
+# define rt_mutex_cmpxchg(l,c,n)	(cmpxchg(&l->owner, c, n) == c)
+static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
+{
+	unsigned long owner, *p = (unsigned long *) &lock->owner;
+
+	do {
+		owner = *p;
+	} while (cmpxchg(p, owner, owner | RT_MUTEX_HAS_WAITERS) != owner);
+}
+#else
+# define rt_mutex_cmpxchg(l,c,n)	(0)
+static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
+{
+	lock->owner = (struct task_struct *)
+			((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS);
+}
+#endif
+
+/*
  * Calculate task priority from the waiter list priority
  *
  * Return task->normal_prio when the waiter list is empty or when
@@ -100,7 +123,7 @@ int rt_mutex_getprio(struct task_struct *task)
  *
  * This can be both boosting and unboosting. task->pi_lock must be held.
  */
-void __rt_mutex_adjust_prio(struct task_struct *task)
+static void __rt_mutex_adjust_prio(struct task_struct *task)
 {
 	int prio = rt_mutex_getprio(task);
 
@@ -136,11 +159,11 @@ int max_lock_depth = 1024;
  * Decreases task's usage by one - may thus free the task.
  * Returns 0 or -EDEADLK.
  */
-int rt_mutex_adjust_prio_chain(struct task_struct *task,
-			       int deadlock_detect,
-			       struct rt_mutex *orig_lock,
-			       struct rt_mutex_waiter *orig_waiter,
-			       struct task_struct *top_task)
+static int rt_mutex_adjust_prio_chain(struct task_struct *task,
+				      int deadlock_detect,
+				      struct rt_mutex *orig_lock,
+				      struct rt_mutex_waiter *orig_waiter,
+				      struct task_struct *top_task)
 {
 	struct rt_mutex *lock;
 	struct rt_mutex_waiter *waiter, *top_waiter = orig_waiter;
@@ -514,8 +537,8 @@ static void wakeup_next_waiter(struct rt_mutex *lock)
  *
  * Must be called with lock->wait_lock held
  */
-void remove_waiter(struct rt_mutex *lock,
-		   struct rt_mutex_waiter *waiter)
+static void remove_waiter(struct rt_mutex *lock,
+			  struct rt_mutex_waiter *waiter)
 {
 	int first = (waiter == rt_mutex_top_waiter(lock));
 	struct task_struct *owner = rt_mutex_owner(lock);
diff --git a/kernel/rtmutex_common.h b/kernel/rtmutex_common.h
index 242ec7ee740b..9c75856e791e 100644
--- a/kernel/rtmutex_common.h
+++ b/kernel/rtmutex_common.h
@@ -113,29 +113,6 @@ static inline unsigned long rt_mutex_owner_pending(struct rt_mutex *lock)
 }
 
 /*
- * We can speed up the acquire/release, if the architecture
- * supports cmpxchg and if there's no debugging state to be set up
- */
-#if defined(__HAVE_ARCH_CMPXCHG) && !defined(CONFIG_DEBUG_RT_MUTEXES)
-# define rt_mutex_cmpxchg(l,c,n)	(cmpxchg(&l->owner, c, n) == c)
-static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
-{
-	unsigned long owner, *p = (unsigned long *) &lock->owner;
-
-	do {
-		owner = *p;
-	} while (cmpxchg(p, owner, owner | RT_MUTEX_HAS_WAITERS) != owner);
-}
-#else
-# define rt_mutex_cmpxchg(l,c,n)	(0)
-static inline void mark_rt_mutex_waiters(struct rt_mutex *lock)
-{
-	lock->owner = (struct task_struct *)
-			((unsigned long)lock->owner | RT_MUTEX_HAS_WAITERS);
-}
-#endif
-
-/*
  * PI-futex support (proxy locking functions, etc.):
  */
 extern struct task_struct *rt_mutex_next_owner(struct rt_mutex *lock);
@@ -143,15 +120,4 @@ extern void rt_mutex_init_proxy_locked(struct rt_mutex *lock,
 				       struct task_struct *proxy_owner);
 extern void rt_mutex_proxy_unlock(struct rt_mutex *lock,
 				  struct task_struct *proxy_owner);
-
-extern void rt_mutex_set_owner(struct rt_mutex *lock, struct task_struct *owner,
-			       unsigned long mask);
-extern void __rt_mutex_adjust_prio(struct task_struct *task);
-extern int rt_mutex_adjust_prio_chain(struct task_struct *task,
-				      int deadlock_detect,
-				      struct rt_mutex *orig_lock,
-				      struct rt_mutex_waiter *orig_waiter,
-				      struct task_struct *top_task);
-extern void remove_waiter(struct rt_mutex *lock,
-			  struct rt_mutex_waiter *waiter);
 #endif
diff --git a/kernel/sched.c b/kernel/sched.c
index 13cdab3b4c48..a7475913b009 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1159,21 +1159,72 @@ void wait_task_inactive(struct task_struct *p)
 {
 	unsigned long flags;
 	struct rq *rq;
-	int preempted;
+	struct prio_array *array;
+	int running;
 
 repeat:
+	/*
+	 * We do the initial early heuristics without holding
+	 * any task-queue locks at all. We'll only try to get
+	 * the runqueue lock when things look like they will
+	 * work out!
+	 */
+	rq = task_rq(p);
+
+	/*
+	 * If the task is actively running on another CPU
+	 * still, just relax and busy-wait without holding
+	 * any locks.
+	 *
+	 * NOTE! Since we don't hold any locks, it's not
+	 * even sure that "rq" stays as the right runqueue!
+	 * But we don't care, since "task_running()" will
+	 * return false if the runqueue has changed and p
+	 * is actually now running somewhere else!
+	 */
+	while (task_running(rq, p))
+		cpu_relax();
+
+	/*
+	 * Ok, time to look more closely! We need the rq
+	 * lock now, to be *sure*. If we're wrong, we'll
+	 * just go back and repeat.
+	 */
 	rq = task_rq_lock(p, &flags);
-	/* Must be off runqueue entirely, not preempted. */
-	if (unlikely(p->array || task_running(rq, p))) {
-		/* If it's preempted, we yield.  It could be a while. */
-		preempted = !task_running(rq, p);
-		task_rq_unlock(rq, &flags);
+	running = task_running(rq, p);
+	array = p->array;
+	task_rq_unlock(rq, &flags);
+
+	/*
+	 * Was it really running after all now that we
+	 * checked with the proper locks actually held?
+	 *
+	 * Oops. Go back and try again..
+	 */
+	if (unlikely(running)) {
 		cpu_relax();
-		if (preempted)
-			yield();
 		goto repeat;
 	}
-	task_rq_unlock(rq, &flags);
+
+	/*
+	 * It's not enough that it's not actively running,
+	 * it must be off the runqueue _entirely_, and not
+	 * preempted!
+	 *
+	 * So if it wa still runnable (but just not actively
+	 * running right now), it's preempted, and we should
+	 * yield - it could be a while.
+	 */
+	if (unlikely(array)) {
+		yield();
+		goto repeat;
+	}
+
+	/*
+	 * Ahh, all good. It wasn't running, and it wasn't
+	 * runnable, which means that it will never become
+	 * running in the future either. We're all done!
+	 */
 }
 
 /***
@@ -7071,12 +7122,13 @@ EXPORT_SYMBOL(__might_sleep);
 void normalize_rt_tasks(void)
 {
 	struct prio_array *array;
-	struct task_struct *p;
+	struct task_struct *g, *p;
 	unsigned long flags;
 	struct rq *rq;
 
 	read_lock_irq(&tasklist_lock);
-	for_each_process(p) {
+
+	do_each_thread(g, p) {
 		if (!rt_task(p))
 			continue;
 
@@ -7094,7 +7146,8 @@ void normalize_rt_tasks(void)
 
 		__task_rq_unlock(rq);
 		spin_unlock_irqrestore(&p->pi_lock, flags);
-	}
+	} while_each_thread(g, p);
+
 	read_unlock_irq(&tasklist_lock);
 }
 
diff --git a/kernel/signal.c b/kernel/signal.c
index fe590e00db8d..f9405609774e 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -363,7 +363,13 @@ static int __dequeue_signal(struct sigpending *pending, sigset_t *mask,
  */
 int dequeue_signal(struct task_struct *tsk, sigset_t *mask, siginfo_t *info)
 {
-	int signr = __dequeue_signal(&tsk->pending, mask, info);
+	int signr = 0;
+
+	/* We only dequeue private signals from ourselves, we don't let
+	 * signalfd steal them
+	 */
+	if (tsk == current)
+		signr = __dequeue_signal(&tsk->pending, mask, info);
 	if (!signr) {
 		signr = __dequeue_signal(&tsk->signal->shared_pending,
 					 mask, info);
diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 5a2bef44a2f5..7a22f0f3784a 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -775,7 +775,8 @@ static int snd_pmac_free(struct snd_pmac *chip)
 		out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff);
 	}
 
-	snd_pmac_sound_feature(chip, 0);
+	if (chip->node)
+		snd_pmac_sound_feature(chip, 0);
 
 	/* clean up mixer if any */
 	if (chip->mixer_free)
@@ -925,6 +926,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 	}
 	if (! sound) {
 		of_node_put(chip->node);
+		chip->node = NULL;
 		return -ENODEV;
 	}
 	prop = of_get_property(sound, "sub-frame", NULL);
@@ -937,7 +939,9 @@ static int __init snd_pmac_detect(struct snd_pmac *chip)
 		printk(KERN_INFO "snd-powermac no longer handles any "
 				 "machines with a layout-id property "
 				 "in the device-tree, use snd-aoa.\n");
+		of_node_put(sound);
 		of_node_put(chip->node);
+		chip->node = NULL;
 		return -ENODEV;
 	}
 	/* This should be verified on older screamers */
@@ -1297,8 +1301,6 @@ int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return)
 	return 0;
 
  __error:
-	if (chip->pdev)
-		pci_dev_put(chip->pdev);
 	snd_pmac_free(chip);
 	return err;
 }