diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index f5ecc05..d889835 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -4,6 +4,7 @@
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_IDE
 	select HAVE_OPROFILE
+	select HAVE_IRQ_WORK
 	select HAVE_PERF_EVENTS
 	select PERF_USE_VMALLOC
 	select HAVE_ARCH_KGDB
@@ -208,6 +209,7 @@
 	select ARCH_REQUIRE_GPIOLIB
 	select SYS_HAS_EARLY_PRINTK
 	select HAVE_PWM
+	select HAVE_CLK
 
 config LASAT
 	bool "LASAT Networks platforms"
@@ -333,6 +335,8 @@
 config PMC_MSP
 	bool "PMC-Sierra MSP chipsets"
 	depends on EXPERIMENTAL
+	select CEVT_R4K
+	select CSRC_R4K
 	select DMA_NONCOHERENT
 	select SWAP_IO_SPACE
 	select NO_EXCEPT_FILL
diff --git a/arch/mips/alchemy/mtx-1/board_setup.c b/arch/mips/alchemy/mtx-1/board_setup.c
index 6398fa9..40b84b9 100644
--- a/arch/mips/alchemy/mtx-1/board_setup.c
+++ b/arch/mips/alchemy/mtx-1/board_setup.c
@@ -54,8 +54,8 @@
 
 static void mtx1_reset(char *c)
 {
-	/* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
-	au_writel(0x00000000, 0xAE00001C);
+	/* Jump to the reset vector */
+	__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
 }
 
 static void mtx1_power_off(void)
diff --git a/arch/mips/alchemy/mtx-1/platform.c b/arch/mips/alchemy/mtx-1/platform.c
index e30e42a..956f946 100644
--- a/arch/mips/alchemy/mtx-1/platform.c
+++ b/arch/mips/alchemy/mtx-1/platform.c
@@ -28,6 +28,8 @@
 #include <linux/mtd/physmap.h>
 #include <mtd/mtd-abi.h>
 
+#include <asm/mach-au1x00/au1xxx_eth.h>
+
 static struct gpio_keys_button mtx1_gpio_button[] = {
 	{
 		.gpio = 207,
@@ -140,10 +142,17 @@
 	&mtx1_mtd,
 };
 
+static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = {
+	.phy_search_highest_addr	= 1,
+	.phy1_search_mac0 		= 1,
+};
+
 static int __init mtx1_register_devices(void)
 {
 	int rc;
 
+	au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata);
+
 	rc = gpio_request(mtx1_gpio_button[0].gpio,
 					mtx1_gpio_button[0].desc);
 	if (rc < 0) {
diff --git a/arch/mips/alchemy/xxs1500/board_setup.c b/arch/mips/alchemy/xxs1500/board_setup.c
index b43c918..80c521e 100644
--- a/arch/mips/alchemy/xxs1500/board_setup.c
+++ b/arch/mips/alchemy/xxs1500/board_setup.c
@@ -36,8 +36,8 @@
 
 static void xxs1500_reset(char *c)
 {
-	/* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
-	au_writel(0x00000000, 0xAE00001C);
+	/* Jump to the reset vector */
+	__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
 }
 
 static void xxs1500_power_off(void)
diff --git a/arch/mips/include/asm/perf_event.h b/arch/mips/include/asm/perf_event.h
index e00007c..d0c7749 100644
--- a/arch/mips/include/asm/perf_event.h
+++ b/arch/mips/include/asm/perf_event.h
@@ -11,15 +11,5 @@
 
 #ifndef __MIPS_PERF_EVENT_H__
 #define __MIPS_PERF_EVENT_H__
-
-/*
- * MIPS performance counters do not raise NMI upon overflow, a regular
- * interrupt will be signaled. Hence we can do the pending perf event
- * work at the tail of the irq handler.
- */
-static inline void
-set_perf_event_pending(void)
-{
-}
-
+/* Leave it empty here. The file is required by linux/perf_event.h */
 #endif /* __MIPS_PERF_EVENT_H__ */
diff --git a/arch/mips/kernel/ftrace.c b/arch/mips/kernel/ftrace.c
index 5a84a1f..94ca2b0 100644
--- a/arch/mips/kernel/ftrace.c
+++ b/arch/mips/kernel/ftrace.c
@@ -17,29 +17,13 @@
 #include <asm/cacheflush.h>
 #include <asm/uasm.h>
 
-/*
- * If the Instruction Pointer is in module space (0xc0000000), return true;
- * otherwise, it is in kernel space (0x80000000), return false.
- *
- * FIXME: This will not work when the kernel space and module space are the
- * same. If they are the same, we need to modify scripts/recordmcount.pl,
- * ftrace_make_nop/call() and the other related parts to ensure the
- * enabling/disabling of the calling site to _mcount is right for both kernel
- * and module.
- */
-
-static inline int in_module(unsigned long ip)
-{
-	return ip & 0x40000000;
-}
+#include <asm-generic/sections.h>
 
 #ifdef CONFIG_DYNAMIC_FTRACE
 
 #define JAL 0x0c000000		/* jump & link: ip --> ra, jump to target */
 #define ADDR_MASK 0x03ffffff	/*  op_code|addr : 31...26|25 ....0 */
 
-#define INSN_B_1F_4 0x10000004	/* b 1f; offset = 4 */
-#define INSN_B_1F_5 0x10000005	/* b 1f; offset = 5 */
 #define INSN_NOP 0x00000000	/* nop */
 #define INSN_JAL(addr)	\
 	((unsigned int)(JAL | (((addr) >> 2) & ADDR_MASK)))
@@ -69,6 +53,20 @@
 #endif
 }
 
+/*
+ * Check if the address is in kernel space
+ *
+ * Clone core_kernel_text() from kernel/extable.c, but doesn't call
+ * init_kernel_text() for Ftrace doesn't trace functions in init sections.
+ */
+static inline int in_kernel_space(unsigned long ip)
+{
+	if (ip >= (unsigned long)_stext &&
+	    ip <= (unsigned long)_etext)
+		return 1;
+	return 0;
+}
+
 static int ftrace_modify_code(unsigned long ip, unsigned int new_code)
 {
 	int faulted;
@@ -84,6 +82,42 @@
 	return 0;
 }
 
+/*
+ * The details about the calling site of mcount on MIPS
+ *
+ * 1. For kernel:
+ *
+ * move at, ra
+ * jal _mcount		--> nop
+ *
+ * 2. For modules:
+ *
+ * 2.1 For KBUILD_MCOUNT_RA_ADDRESS and CONFIG_32BIT
+ *
+ * lui v1, hi_16bit_of_mcount        --> b 1f (0x10000005)
+ * addiu v1, v1, low_16bit_of_mcount
+ * move at, ra
+ * move $12, ra_address
+ * jalr v1
+ *  sub sp, sp, 8
+ *                                  1: offset = 5 instructions
+ * 2.2 For the Other situations
+ *
+ * lui v1, hi_16bit_of_mcount        --> b 1f (0x10000004)
+ * addiu v1, v1, low_16bit_of_mcount
+ * move at, ra
+ * jalr v1
+ *  nop | move $12, ra_address | sub sp, sp, 8
+ *                                  1: offset = 4 instructions
+ */
+
+#if defined(KBUILD_MCOUNT_RA_ADDRESS) && defined(CONFIG_32BIT)
+#define MCOUNT_OFFSET_INSNS 5
+#else
+#define MCOUNT_OFFSET_INSNS 4
+#endif
+#define INSN_B_1F (0x10000000 | MCOUNT_OFFSET_INSNS)
+
 int ftrace_make_nop(struct module *mod,
 		    struct dyn_ftrace *rec, unsigned long addr)
 {
@@ -91,39 +125,11 @@
 	unsigned long ip = rec->ip;
 
 	/*
-	 * We have compiled module with -mlong-calls, but compiled the kernel
-	 * without it, we need to cope with them respectively.
+	 * If ip is in kernel space, no long call, otherwise, long call is
+	 * needed.
 	 */
-	if (in_module(ip)) {
-#if defined(KBUILD_MCOUNT_RA_ADDRESS) && defined(CONFIG_32BIT)
-		/*
-		 * lui v1, hi_16bit_of_mcount        --> b 1f (0x10000005)
-		 * addiu v1, v1, low_16bit_of_mcount
-		 * move at, ra
-		 * move $12, ra_address
-		 * jalr v1
-		 *  sub sp, sp, 8
-		 *                                  1: offset = 5 instructions
-		 */
-		new = INSN_B_1F_5;
-#else
-		/*
-		 * lui v1, hi_16bit_of_mcount        --> b 1f (0x10000004)
-		 * addiu v1, v1, low_16bit_of_mcount
-		 * move at, ra
-		 * jalr v1
-		 *  nop | move $12, ra_address | sub sp, sp, 8
-		 *                                  1: offset = 4 instructions
-		 */
-		new = INSN_B_1F_4;
-#endif
-	} else {
-		/*
-		 * move at, ra
-		 * jal _mcount		--> nop
-		 */
-		new = INSN_NOP;
-	}
+	new = in_kernel_space(ip) ? INSN_NOP : INSN_B_1F;
+
 	return ftrace_modify_code(ip, new);
 }
 
@@ -132,8 +138,8 @@
 	unsigned int new;
 	unsigned long ip = rec->ip;
 
-	/* ip, module: 0xc0000000, kernel: 0x80000000 */
-	new = in_module(ip) ? insn_lui_v1_hi16_mcount : insn_jal_ftrace_caller;
+	new = in_kernel_space(ip) ? insn_jal_ftrace_caller :
+		insn_lui_v1_hi16_mcount;
 
 	return ftrace_modify_code(ip, new);
 }
@@ -190,29 +196,25 @@
 #define S_R_SP	(0xafb0 << 16)  /* s{d,w} R, offset(sp) */
 #define OFFSET_MASK	0xffff	/* stack offset range: 0 ~ PT_SIZE */
 
-unsigned long ftrace_get_parent_addr(unsigned long self_addr,
-				     unsigned long parent,
-				     unsigned long parent_addr,
-				     unsigned long fp)
+unsigned long ftrace_get_parent_ra_addr(unsigned long self_ra, unsigned long
+		old_parent_ra, unsigned long parent_ra_addr, unsigned long fp)
 {
-	unsigned long sp, ip, ra;
+	unsigned long sp, ip, tmp;
 	unsigned int code;
 	int faulted;
 
 	/*
-	 * For module, move the ip from calling site of mcount to the
-	 * instruction "lui v1, hi_16bit_of_mcount"(offset is 20), but for
-	 * kernel, move to the instruction "move ra, at"(offset is 12)
+	 * For module, move the ip from the return address after the
+	 * instruction "lui v1, hi_16bit_of_mcount"(offset is 24), but for
+	 * kernel, move after the instruction "move ra, at"(offset is 16)
 	 */
-	ip = self_addr - (in_module(self_addr) ? 20 : 12);
+	ip = self_ra - (in_kernel_space(self_ra) ? 16 : 24);
 
 	/*
 	 * search the text until finding the non-store instruction or "s{d,w}
 	 * ra, offset(sp)" instruction
 	 */
 	do {
-		ip -= 4;
-
 		/* get the code at "ip": code = *(unsigned int *)ip; */
 		safe_load_code(code, ip, faulted);
 
@@ -224,18 +226,20 @@
 		 * store the ra on the stack
 		 */
 		if ((code & S_R_SP) != S_R_SP)
-			return parent_addr;
+			return parent_ra_addr;
 
-	} while (((code & S_RA_SP) != S_RA_SP));
+		/* Move to the next instruction */
+		ip -= 4;
+	} while ((code & S_RA_SP) != S_RA_SP);
 
 	sp = fp + (code & OFFSET_MASK);
 
-	/* ra = *(unsigned long *)sp; */
-	safe_load_stack(ra, sp, faulted);
+	/* tmp = *(unsigned long *)sp; */
+	safe_load_stack(tmp, sp, faulted);
 	if (unlikely(faulted))
 		return 0;
 
-	if (ra == parent)
+	if (tmp == old_parent_ra)
 		return sp;
 	return 0;
 }
@@ -246,21 +250,21 @@
  * Hook the return address and push it in the stack of return addrs
  * in current thread info.
  */
-void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
+void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra,
 			   unsigned long fp)
 {
-	unsigned long old;
+	unsigned long old_parent_ra;
 	struct ftrace_graph_ent trace;
 	unsigned long return_hooker = (unsigned long)
 	    &return_to_handler;
-	int faulted;
+	int faulted, insns;
 
 	if (unlikely(atomic_read(&current->tracing_graph_pause)))
 		return;
 
 	/*
-	 * "parent" is the stack address saved the return address of the caller
-	 * of _mcount.
+	 * "parent_ra_addr" is the stack address saved the return address of
+	 * the caller of _mcount.
 	 *
 	 * if the gcc < 4.5, a leaf function does not save the return address
 	 * in the stack address, so, we "emulate" one in _mcount's stack space,
@@ -275,37 +279,44 @@
 	 * do it in ftrace_graph_caller of mcount.S.
 	 */
 
-	/* old = *parent; */
-	safe_load_stack(old, parent, faulted);
+	/* old_parent_ra = *parent_ra_addr; */
+	safe_load_stack(old_parent_ra, parent_ra_addr, faulted);
 	if (unlikely(faulted))
 		goto out;
 #ifndef KBUILD_MCOUNT_RA_ADDRESS
-	parent = (unsigned long *)ftrace_get_parent_addr(self_addr, old,
-			(unsigned long)parent, fp);
+	parent_ra_addr = (unsigned long *)ftrace_get_parent_ra_addr(self_ra,
+			old_parent_ra, (unsigned long)parent_ra_addr, fp);
 	/*
 	 * If fails when getting the stack address of the non-leaf function's
 	 * ra, stop function graph tracer and return
 	 */
-	if (parent == 0)
+	if (parent_ra_addr == 0)
 		goto out;
 #endif
-	/* *parent = return_hooker; */
-	safe_store_stack(return_hooker, parent, faulted);
+	/* *parent_ra_addr = return_hooker; */
+	safe_store_stack(return_hooker, parent_ra_addr, faulted);
 	if (unlikely(faulted))
 		goto out;
 
-	if (ftrace_push_return_trace(old, self_addr, &trace.depth, fp) ==
-	    -EBUSY) {
-		*parent = old;
+	if (ftrace_push_return_trace(old_parent_ra, self_ra, &trace.depth, fp)
+	    == -EBUSY) {
+		*parent_ra_addr = old_parent_ra;
 		return;
 	}
 
-	trace.func = self_addr;
+	/*
+	 * Get the recorded ip of the current mcount calling site in the
+	 * __mcount_loc section, which will be used to filter the function
+	 * entries configured through the tracing/set_graph_function interface.
+	 */
+
+	insns = in_kernel_space(self_ra) ? 2 : MCOUNT_OFFSET_INSNS + 1;
+	trace.func = self_ra - (MCOUNT_INSN_SIZE * insns);
 
 	/* Only trace if the calling function expects to */
 	if (!ftrace_graph_entry(&trace)) {
 		current->curr_ret_stack--;
-		*parent = old;
+		*parent_ra_addr = old_parent_ra;
 	}
 	return;
 out:
diff --git a/arch/mips/kernel/perf_event.c b/arch/mips/kernel/perf_event.c
index 2b7f3f7..a824485 100644
--- a/arch/mips/kernel/perf_event.c
+++ b/arch/mips/kernel/perf_event.c
@@ -161,41 +161,6 @@
 	return ret;
 }
 
-static int mipspmu_enable(struct perf_event *event)
-{
-	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
-	struct hw_perf_event *hwc = &event->hw;
-	int idx;
-	int err = 0;
-
-	/* To look for a free counter for this event. */
-	idx = mipspmu->alloc_counter(cpuc, hwc);
-	if (idx < 0) {
-		err = idx;
-		goto out;
-	}
-
-	/*
-	 * If there is an event in the counter we are going to use then
-	 * make sure it is disabled.
-	 */
-	event->hw.idx = idx;
-	mipspmu->disable_event(idx);
-	cpuc->events[idx] = event;
-
-	/* Set the period for the event. */
-	mipspmu_event_set_period(event, hwc, idx);
-
-	/* Enable the event. */
-	mipspmu->enable_event(hwc, idx);
-
-	/* Propagate our changes to the userspace mapping. */
-	perf_event_update_userpage(event);
-
-out:
-	return err;
-}
-
 static void mipspmu_event_update(struct perf_event *event,
 			struct hw_perf_event *hwc,
 			int idx)
@@ -204,7 +169,7 @@
 	unsigned long flags;
 	int shift = 64 - TOTAL_BITS;
 	s64 prev_raw_count, new_raw_count;
-	s64 delta;
+	u64 delta;
 
 again:
 	prev_raw_count = local64_read(&hwc->prev_count);
@@ -231,34 +196,92 @@
 	return;
 }
 
-static void mipspmu_disable(struct perf_event *event)
+static void mipspmu_start(struct perf_event *event, int flags)
+{
+	struct hw_perf_event *hwc = &event->hw;
+
+	if (!mipspmu)
+		return;
+
+	if (flags & PERF_EF_RELOAD)
+		WARN_ON_ONCE(!(hwc->state & PERF_HES_UPTODATE));
+
+	hwc->state = 0;
+
+	/* Set the period for the event. */
+	mipspmu_event_set_period(event, hwc, hwc->idx);
+
+	/* Enable the event. */
+	mipspmu->enable_event(hwc, hwc->idx);
+}
+
+static void mipspmu_stop(struct perf_event *event, int flags)
+{
+	struct hw_perf_event *hwc = &event->hw;
+
+	if (!mipspmu)
+		return;
+
+	if (!(hwc->state & PERF_HES_STOPPED)) {
+		/* We are working on a local event. */
+		mipspmu->disable_event(hwc->idx);
+		barrier();
+		mipspmu_event_update(event, hwc, hwc->idx);
+		hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;
+	}
+}
+
+static int mipspmu_add(struct perf_event *event, int flags)
+{
+	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
+	struct hw_perf_event *hwc = &event->hw;
+	int idx;
+	int err = 0;
+
+	perf_pmu_disable(event->pmu);
+
+	/* To look for a free counter for this event. */
+	idx = mipspmu->alloc_counter(cpuc, hwc);
+	if (idx < 0) {
+		err = idx;
+		goto out;
+	}
+
+	/*
+	 * If there is an event in the counter we are going to use then
+	 * make sure it is disabled.
+	 */
+	event->hw.idx = idx;
+	mipspmu->disable_event(idx);
+	cpuc->events[idx] = event;
+
+	hwc->state = PERF_HES_STOPPED | PERF_HES_UPTODATE;
+	if (flags & PERF_EF_START)
+		mipspmu_start(event, PERF_EF_RELOAD);
+
+	/* Propagate our changes to the userspace mapping. */
+	perf_event_update_userpage(event);
+
+out:
+	perf_pmu_enable(event->pmu);
+	return err;
+}
+
+static void mipspmu_del(struct perf_event *event, int flags)
 {
 	struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
 	struct hw_perf_event *hwc = &event->hw;
 	int idx = hwc->idx;
 
-
 	WARN_ON(idx < 0 || idx >= mipspmu->num_counters);
 
-	/* We are working on a local event. */
-	mipspmu->disable_event(idx);
-
-	barrier();
-
-	mipspmu_event_update(event, hwc, idx);
+	mipspmu_stop(event, PERF_EF_UPDATE);
 	cpuc->events[idx] = NULL;
 	clear_bit(idx, cpuc->used_mask);
 
 	perf_event_update_userpage(event);
 }
 
-static void mipspmu_unthrottle(struct perf_event *event)
-{
-	struct hw_perf_event *hwc = &event->hw;
-
-	mipspmu->enable_event(hwc, hwc->idx);
-}
-
 static void mipspmu_read(struct perf_event *event)
 {
 	struct hw_perf_event *hwc = &event->hw;
@@ -270,12 +293,17 @@
 	mipspmu_event_update(event, hwc, hwc->idx);
 }
 
-static struct pmu pmu = {
-	.enable		= mipspmu_enable,
-	.disable	= mipspmu_disable,
-	.unthrottle	= mipspmu_unthrottle,
-	.read		= mipspmu_read,
-};
+static void mipspmu_enable(struct pmu *pmu)
+{
+	if (mipspmu)
+		mipspmu->start();
+}
+
+static void mipspmu_disable(struct pmu *pmu)
+{
+	if (mipspmu)
+		mipspmu->stop();
+}
 
 static atomic_t active_events = ATOMIC_INIT(0);
 static DEFINE_MUTEX(pmu_reserve_mutex);
@@ -318,6 +346,82 @@
 		perf_irq = save_perf_irq;
 }
 
+/*
+ * mipsxx/rm9000/loongson2 have different performance counters, they have
+ * specific low-level init routines.
+ */
+static void reset_counters(void *arg);
+static int __hw_perf_event_init(struct perf_event *event);
+
+static void hw_perf_event_destroy(struct perf_event *event)
+{
+	if (atomic_dec_and_mutex_lock(&active_events,
+				&pmu_reserve_mutex)) {
+		/*
+		 * We must not call the destroy function with interrupts
+		 * disabled.
+		 */
+		on_each_cpu(reset_counters,
+			(void *)(long)mipspmu->num_counters, 1);
+		mipspmu_free_irq();
+		mutex_unlock(&pmu_reserve_mutex);
+	}
+}
+
+static int mipspmu_event_init(struct perf_event *event)
+{
+	int err = 0;
+
+	switch (event->attr.type) {
+	case PERF_TYPE_RAW:
+	case PERF_TYPE_HARDWARE:
+	case PERF_TYPE_HW_CACHE:
+		break;
+
+	default:
+		return -ENOENT;
+	}
+
+	if (!mipspmu || event->cpu >= nr_cpumask_bits ||
+		(event->cpu >= 0 && !cpu_online(event->cpu)))
+		return -ENODEV;
+
+	if (!atomic_inc_not_zero(&active_events)) {
+		if (atomic_read(&active_events) > MIPS_MAX_HWEVENTS) {
+			atomic_dec(&active_events);
+			return -ENOSPC;
+		}
+
+		mutex_lock(&pmu_reserve_mutex);
+		if (atomic_read(&active_events) == 0)
+			err = mipspmu_get_irq();
+
+		if (!err)
+			atomic_inc(&active_events);
+		mutex_unlock(&pmu_reserve_mutex);
+	}
+
+	if (err)
+		return err;
+
+	err = __hw_perf_event_init(event);
+	if (err)
+		hw_perf_event_destroy(event);
+
+	return err;
+}
+
+static struct pmu pmu = {
+	.pmu_enable	= mipspmu_enable,
+	.pmu_disable	= mipspmu_disable,
+	.event_init	= mipspmu_event_init,
+	.add		= mipspmu_add,
+	.del		= mipspmu_del,
+	.start		= mipspmu_start,
+	.stop		= mipspmu_stop,
+	.read		= mipspmu_read,
+};
+
 static inline unsigned int
 mipspmu_perf_event_encode(const struct mips_perf_event *pev)
 {
@@ -382,8 +486,9 @@
 {
 	struct hw_perf_event fake_hwc = event->hw;
 
-	if (event->pmu && event->pmu != &pmu)
-		return 0;
+	/* Allow mixed event group. So return 1 to pass validation. */
+	if (event->pmu != &pmu || event->state <= PERF_EVENT_STATE_OFF)
+		return 1;
 
 	return mipspmu->alloc_counter(cpuc, &fake_hwc) >= 0;
 }
@@ -409,73 +514,6 @@
 	return 0;
 }
 
-/*
- * mipsxx/rm9000/loongson2 have different performance counters, they have
- * specific low-level init routines.
- */
-static void reset_counters(void *arg);
-static int __hw_perf_event_init(struct perf_event *event);
-
-static void hw_perf_event_destroy(struct perf_event *event)
-{
-	if (atomic_dec_and_mutex_lock(&active_events,
-				&pmu_reserve_mutex)) {
-		/*
-		 * We must not call the destroy function with interrupts
-		 * disabled.
-		 */
-		on_each_cpu(reset_counters,
-			(void *)(long)mipspmu->num_counters, 1);
-		mipspmu_free_irq();
-		mutex_unlock(&pmu_reserve_mutex);
-	}
-}
-
-const struct pmu *hw_perf_event_init(struct perf_event *event)
-{
-	int err = 0;
-
-	if (!mipspmu || event->cpu >= nr_cpumask_bits ||
-		(event->cpu >= 0 && !cpu_online(event->cpu)))
-		return ERR_PTR(-ENODEV);
-
-	if (!atomic_inc_not_zero(&active_events)) {
-		if (atomic_read(&active_events) > MIPS_MAX_HWEVENTS) {
-			atomic_dec(&active_events);
-			return ERR_PTR(-ENOSPC);
-		}
-
-		mutex_lock(&pmu_reserve_mutex);
-		if (atomic_read(&active_events) == 0)
-			err = mipspmu_get_irq();
-
-		if (!err)
-			atomic_inc(&active_events);
-		mutex_unlock(&pmu_reserve_mutex);
-	}
-
-	if (err)
-		return ERR_PTR(err);
-
-	err = __hw_perf_event_init(event);
-	if (err)
-		hw_perf_event_destroy(event);
-
-	return err ? ERR_PTR(err) : &pmu;
-}
-
-void hw_perf_enable(void)
-{
-	if (mipspmu)
-		mipspmu->start();
-}
-
-void hw_perf_disable(void)
-{
-	if (mipspmu)
-		mipspmu->stop();
-}
-
 /* This is needed by specific irq handlers in perf_event_*.c */
 static void
 handle_associated_event(struct cpu_hw_events *cpuc,
@@ -496,21 +534,13 @@
 #include "perf_event_mipsxx.c"
 
 /* Callchain handling code. */
-static inline void
-callchain_store(struct perf_callchain_entry *entry,
-		u64 ip)
-{
-	if (entry->nr < PERF_MAX_STACK_DEPTH)
-		entry->ip[entry->nr++] = ip;
-}
 
 /*
  * Leave userspace callchain empty for now. When we find a way to trace
  * the user stack callchains, we add here.
  */
-static void
-perf_callchain_user(struct pt_regs *regs,
-		    struct perf_callchain_entry *entry)
+void perf_callchain_user(struct perf_callchain_entry *entry,
+		    struct pt_regs *regs)
 {
 }
 
@@ -523,23 +553,21 @@
 	while (!kstack_end(sp)) {
 		addr = *sp++;
 		if (__kernel_text_address(addr)) {
-			callchain_store(entry, addr);
+			perf_callchain_store(entry, addr);
 			if (entry->nr >= PERF_MAX_STACK_DEPTH)
 				break;
 		}
 	}
 }
 
-static void
-perf_callchain_kernel(struct pt_regs *regs,
-		      struct perf_callchain_entry *entry)
+void perf_callchain_kernel(struct perf_callchain_entry *entry,
+		      struct pt_regs *regs)
 {
 	unsigned long sp = regs->regs[29];
 #ifdef CONFIG_KALLSYMS
 	unsigned long ra = regs->regs[31];
 	unsigned long pc = regs->cp0_epc;
 
-	callchain_store(entry, PERF_CONTEXT_KERNEL);
 	if (raw_show_trace || !__kernel_text_address(pc)) {
 		unsigned long stack_page =
 			(unsigned long)task_stack_page(current);
@@ -549,53 +577,12 @@
 		return;
 	}
 	do {
-		callchain_store(entry, pc);
+		perf_callchain_store(entry, pc);
 		if (entry->nr >= PERF_MAX_STACK_DEPTH)
 			break;
 		pc = unwind_stack(current, &sp, pc, &ra);
 	} while (pc);
 #else
-	callchain_store(entry, PERF_CONTEXT_KERNEL);
 	save_raw_perf_callchain(entry, sp);
 #endif
 }
-
-static void
-perf_do_callchain(struct pt_regs *regs,
-		  struct perf_callchain_entry *entry)
-{
-	int is_user;
-
-	if (!regs)
-		return;
-
-	is_user = user_mode(regs);
-
-	if (!current || !current->pid)
-		return;
-
-	if (is_user && current->state != TASK_RUNNING)
-		return;
-
-	if (!is_user) {
-		perf_callchain_kernel(regs, entry);
-		if (current->mm)
-			regs = task_pt_regs(current);
-		else
-			regs = NULL;
-	}
-	if (regs)
-		perf_callchain_user(regs, entry);
-}
-
-static DEFINE_PER_CPU(struct perf_callchain_entry, pmc_irq_entry);
-
-struct perf_callchain_entry *
-perf_callchain(struct pt_regs *regs)
-{
-	struct perf_callchain_entry *entry = &__get_cpu_var(pmc_irq_entry);
-
-	entry->nr = 0;
-	perf_do_callchain(regs, entry);
-	return entry;
-}
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index 183e0d2..d9a7db7 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -696,7 +696,7 @@
 	 * interrupt, not NMI.
 	 */
 	if (handled == IRQ_HANDLED)
-		perf_event_do_pending();
+		irq_work_run();
 
 #ifdef CONFIG_MIPS_MT_SMP
 	read_unlock(&pmuint_rwlock);
@@ -1045,6 +1045,8 @@
 			"CPU, irq %d%s\n", mipspmu->name, counters, irq,
 			irq < 0 ? " (share with timer interrupt)" : "");
 
+	perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
+
 	return 0;
 }
 early_initcall(init_hw_perf_events);
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index 5922342..dbbe0ce 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -84,7 +84,7 @@
 
 static int protected_restore_fp_context(struct sigcontext __user *sc)
 {
-	int err, tmp;
+	int err, tmp __maybe_unused;
 	while (1) {
 		lock_fpu_owner();
 		own_fpu_inatomic(0);
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index a0ed0e0..aae9866 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -115,7 +115,7 @@
 
 static int protected_restore_fp_context32(struct sigcontext32 __user *sc)
 {
-	int err, tmp;
+	int err, tmp __maybe_unused;
 	while (1) {
 		lock_fpu_owner();
 		own_fpu_inatomic(0);
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 383aeb9..32a2561 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -193,6 +193,22 @@
  */
 static struct task_struct *cpu_idle_thread[NR_CPUS];
 
+struct create_idle {
+	struct work_struct work;
+	struct task_struct *idle;
+	struct completion done;
+	int cpu;
+};
+
+static void __cpuinit do_fork_idle(struct work_struct *work)
+{
+	struct create_idle *c_idle =
+		container_of(work, struct create_idle, work);
+
+	c_idle->idle = fork_idle(c_idle->cpu);
+	complete(&c_idle->done);
+}
+
 int __cpuinit __cpu_up(unsigned int cpu)
 {
 	struct task_struct *idle;
@@ -203,8 +219,19 @@
 	 * Linux can schedule processes on this slave.
 	 */
 	if (!cpu_idle_thread[cpu]) {
-		idle = fork_idle(cpu);
-		cpu_idle_thread[cpu] = idle;
+		/*
+		 * Schedule work item to avoid forking user task
+		 * Ported from arch/x86/kernel/smpboot.c
+		 */
+		struct create_idle c_idle = {
+			.cpu    = cpu,
+			.done   = COMPLETION_INITIALIZER_ONSTACK(c_idle.done),
+		};
+
+		INIT_WORK_ONSTACK(&c_idle.work, do_fork_idle);
+		schedule_work(&c_idle.work);
+		wait_for_completion(&c_idle.done);
+		idle = cpu_idle_thread[cpu] = c_idle.idle;
 
 		if (IS_ERR(idle))
 			panic(KERN_ERR "Fork failed for CPU %d", cpu);
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 1dc6edf..58beabf 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -383,12 +383,11 @@
 static int __used noinline
 _sys_sysmips(nabi_no_regargs struct pt_regs regs)
 {
-	long cmd, arg1, arg2, arg3;
+	long cmd, arg1, arg2;
 
 	cmd = regs.regs[4];
 	arg1 = regs.regs[5];
 	arg2 = regs.regs[6];
-	arg3 = regs.regs[7];
 
 	switch (cmd) {
 	case MIPS_ATOMIC_SET:
@@ -405,7 +404,7 @@
 		if (arg1 & 2)
 			set_thread_flag(TIF_LOGADE);
 		else
-			clear_thread_flag(TIF_FIXADE);
+			clear_thread_flag(TIF_LOGADE);
 
 		return 0;
 
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 6a1fdfe..ab52b7c 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -148,9 +148,9 @@
 	spinlock_t tc_list_lock;
 	struct list_head tc_list;	/* Thread contexts */
 } vpecontrol = {
-	.vpe_list_lock	= SPIN_LOCK_UNLOCKED,
+	.vpe_list_lock	= __SPIN_LOCK_UNLOCKED(vpe_list_lock),
 	.vpe_list	= LIST_HEAD_INIT(vpecontrol.vpe_list),
-	.tc_list_lock	= SPIN_LOCK_UNLOCKED,
+	.tc_list_lock	= __SPIN_LOCK_UNLOCKED(tc_list_lock),
 	.tc_list	= LIST_HEAD_INIT(vpecontrol.tc_list)
 };
 
diff --git a/arch/mips/loongson/Kconfig b/arch/mips/loongson/Kconfig
index 6e1b77f..aca93ee 100644
--- a/arch/mips/loongson/Kconfig
+++ b/arch/mips/loongson/Kconfig
@@ -1,6 +1,7 @@
+if MACH_LOONGSON
+
 choice
 	prompt "Machine Type"
-	depends on MACH_LOONGSON
 
 config LEMOTE_FULOONG2E
 	bool "Lemote Fuloong(2e) mini-PC"
@@ -87,3 +88,5 @@
 config LOONGSON_MC146818
 	bool
 	default n
+
+endif # MACH_LOONGSON
diff --git a/arch/mips/loongson/common/cmdline.c b/arch/mips/loongson/common/cmdline.c
index 1a06def..353e1d2 100644
--- a/arch/mips/loongson/common/cmdline.c
+++ b/arch/mips/loongson/common/cmdline.c
@@ -44,10 +44,5 @@
 		strcat(arcs_cmdline, " ");
 	}
 
-	if ((strstr(arcs_cmdline, "console=")) == NULL)
-		strcat(arcs_cmdline, " console=ttyS0,115200");
-	if ((strstr(arcs_cmdline, "root=")) == NULL)
-		strcat(arcs_cmdline, " root=/dev/hda1");
-
 	prom_init_machtype();
 }
diff --git a/arch/mips/loongson/common/machtype.c b/arch/mips/loongson/common/machtype.c
index 81fbe6b..2efd5d9 100644
--- a/arch/mips/loongson/common/machtype.c
+++ b/arch/mips/loongson/common/machtype.c
@@ -41,7 +41,7 @@
 
 void __init prom_init_machtype(void)
 {
-	char *p, str[MACHTYPE_LEN];
+	char *p, str[MACHTYPE_LEN + 1];
 	int machtype = MACH_LEMOTE_FL2E;
 
 	mips_machtype = LOONGSON_MACHTYPE;
@@ -53,6 +53,7 @@
 	}
 	p += strlen("machtype=");
 	strncpy(str, p, MACHTYPE_LEN);
+	str[MACHTYPE_LEN] = '\0';
 	p = strstr(str, " ");
 	if (p)
 		*p = '\0';
diff --git a/arch/mips/math-emu/ieee754int.h b/arch/mips/math-emu/ieee754int.h
index 2701d95..2a7d43f 100644
--- a/arch/mips/math-emu/ieee754int.h
+++ b/arch/mips/math-emu/ieee754int.h
@@ -70,7 +70,7 @@
 
 
 #define COMPXSP \
-  unsigned xm; int xe; int xs; int xc
+  unsigned xm; int xe; int xs __maybe_unused; int xc
 
 #define COMPYSP \
   unsigned ym; int ye; int ys; int yc
@@ -104,7 +104,7 @@
 
 
 #define COMPXDP \
-u64 xm; int xe; int xs; int xc
+u64 xm; int xe; int xs __maybe_unused; int xc
 
 #define COMPYDP \
 u64 ym; int ye; int ys; int yc
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 2efcbd2..279599e 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -324,7 +324,7 @@
 void __init paging_init(void)
 {
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
-	unsigned long lastpfn;
+	unsigned long lastpfn __maybe_unused;
 
 	pagetable_init();
 
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 083d341..04f9e17 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -109,6 +109,8 @@
 static int scratchpad_offset(int i)
 {
 	BUG();
+	/* Really unreachable, but evidently some GCC want this. */
+	return 0;
 }
 #endif
 /*
diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c
index b7c03d8..68798f8 100644
--- a/arch/mips/pci/ops-pmcmsp.c
+++ b/arch/mips/pci/ops-pmcmsp.c
@@ -308,7 +308,7 @@
  *  RETURNS:     PCIBIOS_SUCCESSFUL  - success
  *
  ****************************************************************************/
-static int bpci_interrupt(int irq, void *dev_id)
+static irqreturn_t bpci_interrupt(int irq, void *dev_id)
 {
 	struct msp_pci_regs *preg = (void *)PCI_BASE_REG;
 	unsigned int stat = preg->if_status;
@@ -326,7 +326,7 @@
 	/* write to clear all asserted interrupts */
 	preg->if_status = stat;
 
-	return PCIBIOS_SUCCESSFUL;
+	return IRQ_HANDLED;
 }
 
 /*****************************************************************************
diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index c139988..8d79849 100644
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -4,15 +4,11 @@
 
 config PMC_MSP4200_EVAL
 	bool "PMC-Sierra MSP4200 Eval Board"
-	select CEVT_R4K
-	select CSRC_R4K
 	select IRQ_MSP_SLP
 	select HW_HAS_PCI
 
 config PMC_MSP4200_GW
 	bool "PMC-Sierra MSP4200 VoIP Gateway"
-	select CEVT_R4K
-	select CSRC_R4K
 	select IRQ_MSP_SLP
 	select HW_HAS_PCI
 
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_time.c b/arch/mips/pmc-sierra/msp71xx/msp_time.c
index cca64e1..01df84c 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_time.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_time.c
@@ -81,7 +81,7 @@
 	mips_hpt_frequency = cpu_rate/2;
 }
 
-unsigned int __init get_c0_compare_int(void)
+unsigned int __cpuinit get_c0_compare_int(void)
 {
 	return MSP_INT_VPE0_TIMER;
 }
diff --git a/arch/x86/include/asm/ce4100.h b/arch/x86/include/asm/ce4100.h
new file mode 100644
index 0000000..e656ad8
--- /dev/null
+++ b/arch/x86/include/asm/ce4100.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_CE4100_H_
+#define _ASM_CE4100_H_
+
+int ce4100_pci_init(void);
+
+#endif
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c
index 13a3891..452932d 100644
--- a/arch/x86/kernel/check.c
+++ b/arch/x86/kernel/check.c
@@ -106,8 +106,8 @@
 		addr += size;
 	}
 
-	printk(KERN_INFO "Scanning %d areas for low memory corruption\n",
-	       num_scan_areas);
+	if (num_scan_areas)
+		printk(KERN_INFO "Scanning %d areas for low memory corruption\n", num_scan_areas);
 }
 
 
@@ -143,12 +143,12 @@
 {
 	check_for_bios_corruption();
 	schedule_delayed_work(&bios_check_work,
-		round_jiffies_relative(corruption_check_period*HZ)); 
+		round_jiffies_relative(corruption_check_period*HZ));
 }
 
 static int start_periodic_check_for_corruption(void)
 {
-	if (!memory_corruption_check || corruption_check_period == 0)
+	if (!num_scan_areas || !memory_corruption_check || corruption_check_period == 0)
 		return 0;
 
 	printk(KERN_INFO "Scanning for low memory corruption every %d seconds\n",
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 7d90ceb..20e3f87 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -229,15 +229,14 @@
 	for (address = VMALLOC_START & PMD_MASK;
 	     address >= TASK_SIZE && address < FIXADDR_TOP;
 	     address += PMD_SIZE) {
-
-		unsigned long flags;
 		struct page *page;
 
-		spin_lock_irqsave(&pgd_lock, flags);
+		spin_lock(&pgd_lock);
 		list_for_each_entry(page, &pgd_list, lru) {
 			spinlock_t *pgt_lock;
 			pmd_t *ret;
 
+			/* the pgt_lock only for Xen */
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 
 			spin_lock(pgt_lock);
@@ -247,7 +246,7 @@
 			if (!ret)
 				break;
 		}
-		spin_unlock_irqrestore(&pgd_lock, flags);
+		spin_unlock(&pgd_lock);
 	}
 }
 
@@ -828,6 +827,13 @@
 	       unsigned long address, unsigned int fault)
 {
 	if (fault & VM_FAULT_OOM) {
+		/* Kernel mode? Handle exceptions or die: */
+		if (!(error_code & PF_USER)) {
+			up_read(&current->mm->mmap_sem);
+			no_context(regs, error_code, address);
+			return;
+		}
+
 		out_of_memory(regs, error_code, address);
 	} else {
 		if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 71a5929..c14a542 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -105,18 +105,18 @@
 
 	for (address = start; address <= end; address += PGDIR_SIZE) {
 		const pgd_t *pgd_ref = pgd_offset_k(address);
-		unsigned long flags;
 		struct page *page;
 
 		if (pgd_none(*pgd_ref))
 			continue;
 
-		spin_lock_irqsave(&pgd_lock, flags);
+		spin_lock(&pgd_lock);
 		list_for_each_entry(page, &pgd_list, lru) {
 			pgd_t *pgd;
 			spinlock_t *pgt_lock;
 
 			pgd = (pgd_t *)page_address(page) + pgd_index(address);
+			/* the pgt_lock only for Xen */
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 			spin_lock(pgt_lock);
 
@@ -128,7 +128,7 @@
 
 			spin_unlock(pgt_lock);
 		}
-		spin_unlock_irqrestore(&pgd_lock, flags);
+		spin_unlock(&pgd_lock);
 	}
 }
 
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index d343b3c..90825f2 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -57,12 +57,10 @@
 
 void update_page_count(int level, unsigned long pages)
 {
-	unsigned long flags;
-
 	/* Protect against CPA */
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 	direct_pages_count[level] += pages;
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 }
 
 static void split_page_count(int level)
@@ -394,7 +392,7 @@
 try_preserve_large_page(pte_t *kpte, unsigned long address,
 			struct cpa_data *cpa)
 {
-	unsigned long nextpage_addr, numpages, pmask, psize, flags, addr, pfn;
+	unsigned long nextpage_addr, numpages, pmask, psize, addr, pfn;
 	pte_t new_pte, old_pte, *tmp;
 	pgprot_t old_prot, new_prot, req_prot;
 	int i, do_split = 1;
@@ -403,7 +401,7 @@
 	if (cpa->force_split)
 		return 1;
 
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 	/*
 	 * Check for races, another CPU might have split this page
 	 * up already:
@@ -498,14 +496,14 @@
 	}
 
 out_unlock:
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 
 	return do_split;
 }
 
 static int split_large_page(pte_t *kpte, unsigned long address)
 {
-	unsigned long flags, pfn, pfninc = 1;
+	unsigned long pfn, pfninc = 1;
 	unsigned int i, level;
 	pte_t *pbase, *tmp;
 	pgprot_t ref_prot;
@@ -519,7 +517,7 @@
 	if (!base)
 		return -ENOMEM;
 
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 	/*
 	 * Check for races, another CPU might have split this page
 	 * up for us already:
@@ -591,7 +589,7 @@
 	 */
 	if (base)
 		__free_page(base);
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 
 	return 0;
 }
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 500242d..0113d19 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -121,14 +121,12 @@
 
 static void pgd_dtor(pgd_t *pgd)
 {
-	unsigned long flags; /* can be called from interrupt context */
-
 	if (SHARED_KERNEL_PMD)
 		return;
 
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 	pgd_list_del(pgd);
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 }
 
 /*
@@ -260,7 +258,6 @@
 {
 	pgd_t *pgd;
 	pmd_t *pmds[PREALLOCATED_PMDS];
-	unsigned long flags;
 
 	pgd = (pgd_t *)__get_free_page(PGALLOC_GFP);
 
@@ -280,12 +277,12 @@
 	 * respect to anything walking the pgd_list, so that they
 	 * never see a partially populated pgd.
 	 */
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 
 	pgd_ctor(mm, pgd);
 	pgd_prepopulate_pmd(mm, pgd, pmds);
 
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 
 	return pgd;
 
diff --git a/arch/x86/pci/ce4100.c b/arch/x86/pci/ce4100.c
index 85b68ef..9260b3e 100644
--- a/arch/x86/pci/ce4100.c
+++ b/arch/x86/pci/ce4100.c
@@ -34,6 +34,7 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 
+#include <asm/ce4100.h>
 #include <asm/pci_x86.h>
 
 struct sim_reg {
@@ -306,10 +307,10 @@
 	.write = ce4100_conf_write,
 };
 
-static int __init ce4100_pci_init(void)
+int __init ce4100_pci_init(void)
 {
 	init_sim_regs();
 	raw_pci_ops = &ce4100_pci_conf;
-	return 0;
+	/* Indicate caller that it should invoke pci_legacy_init() */
+	return 1;
 }
-subsys_initcall(ce4100_pci_init);
diff --git a/arch/x86/platform/ce4100/ce4100.c b/arch/x86/platform/ce4100/ce4100.c
index d2c0d51..cd6f184 100644
--- a/arch/x86/platform/ce4100/ce4100.c
+++ b/arch/x86/platform/ce4100/ce4100.c
@@ -15,6 +15,7 @@
 #include <linux/serial_reg.h>
 #include <linux/serial_8250.h>
 
+#include <asm/ce4100.h>
 #include <asm/setup.h>
 #include <asm/io.h>
 
@@ -129,4 +130,5 @@
 	x86_init.resources.probe_roms = x86_init_noop;
 	x86_init.mpparse.get_smp_config = x86_init_uint_noop;
 	x86_init.mpparse.find_smp_config = sdv_find_smp_config;
+	x86_init.pci.init = ce4100_pci_init;
 }
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 5e92b61..f608942 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -986,10 +986,9 @@
  */
 void xen_mm_pin_all(void)
 {
-	unsigned long flags;
 	struct page *page;
 
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 
 	list_for_each_entry(page, &pgd_list, lru) {
 		if (!PagePinned(page)) {
@@ -998,7 +997,7 @@
 		}
 	}
 
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 }
 
 /*
@@ -1099,10 +1098,9 @@
  */
 void xen_mm_unpin_all(void)
 {
-	unsigned long flags;
 	struct page *page;
 
-	spin_lock_irqsave(&pgd_lock, flags);
+	spin_lock(&pgd_lock);
 
 	list_for_each_entry(page, &pgd_list, lru) {
 		if (PageSavePinned(page)) {
@@ -1112,7 +1110,7 @@
 		}
 	}
 
-	spin_unlock_irqrestore(&pgd_lock, flags);
+	spin_unlock(&pgd_lock);
 }
 
 void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next)
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index d270b3f..6140ea1 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2194,7 +2194,6 @@
 		rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
 	}
 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	r700_vram_gtt_location(rdev, &rdev->mc);
 	radeon_update_bandwidth_info(rdev);
 
@@ -2934,7 +2933,7 @@
 	/* XXX: ontario has problems blitting to gart at the moment */
 	if (rdev->family == CHIP_PALM) {
 		rdev->asic->copy = NULL;
-		rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+		radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	}
 
 	/* allocate wb buffer */
diff --git a/drivers/gpu/drm/radeon/evergreen_blit_kms.c b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
index 2adfb03..2be698e 100644
--- a/drivers/gpu/drm/radeon/evergreen_blit_kms.c
+++ b/drivers/gpu/drm/radeon/evergreen_blit_kms.c
@@ -623,7 +623,7 @@
 		dev_err(rdev->dev, "(%d) pin blit object failed\n", r);
 		return r;
 	}
-	rdev->mc.active_vram_size = rdev->mc.real_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
 	return 0;
 }
 
@@ -631,7 +631,7 @@
 {
 	int r;
 
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	if (rdev->r600_blit.shader_obj == NULL)
 		return;
 	/* If we can't reserve the bo, unref should be enough to destroy
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index 79de991..e372f9e 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -1024,7 +1024,7 @@
 		return r;
 	}
 	rdev->cp.ready = true;
-	rdev->mc.active_vram_size = rdev->mc.real_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
 	return 0;
 }
 
@@ -1042,7 +1042,7 @@
 void r100_cp_disable(struct radeon_device *rdev)
 {
 	/* Disable ring */
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	rdev->cp.ready = false;
 	WREG32(RADEON_CP_CSQ_MODE, 0);
 	WREG32(RADEON_CP_CSQ_CNTL, 0);
@@ -2312,7 +2312,6 @@
 	/* FIXME we don't use the second aperture yet when we could use it */
 	if (rdev->mc.visible_vram_size > rdev->mc.aper_size)
 		rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	config_aper_size = RREG32(RADEON_CONFIG_APER_SIZE);
 	if (rdev->flags & RADEON_IS_IGP) {
 		uint32_t tom;
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index de88624..9b3fad2 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1255,7 +1255,6 @@
 	rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
 	rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	r600_vram_gtt_location(rdev, &rdev->mc);
 
 	if (rdev->flags & RADEON_IS_IGP) {
@@ -1937,7 +1936,7 @@
  */
 void r600_cp_stop(struct radeon_device *rdev)
 {
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1));
 	WREG32(SCRATCH_UMSK, 0);
 }
diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c
index 41f7aaf..df68d91 100644
--- a/drivers/gpu/drm/radeon/r600_blit_kms.c
+++ b/drivers/gpu/drm/radeon/r600_blit_kms.c
@@ -558,7 +558,7 @@
 		dev_err(rdev->dev, "(%d) pin blit object failed\n", r);
 		return r;
 	}
-	rdev->mc.active_vram_size = rdev->mc.real_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.real_vram_size);
 	return 0;
 }
 
@@ -566,7 +566,7 @@
 {
 	int r;
 
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	if (rdev->r600_blit.shader_obj == NULL)
 		return;
 	/* If we can't reserve the bo, unref should be enough to destroy
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 56c48b6..6b34294 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -345,7 +345,6 @@
 	 * about vram size near mc fb location */
 	u64			mc_vram_size;
 	u64			visible_vram_size;
-	u64			active_vram_size;
 	u64			gtt_size;
 	u64			gtt_start;
 	u64			gtt_end;
@@ -1448,6 +1447,7 @@
 extern void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc);
 extern int radeon_resume_kms(struct drm_device *dev);
 extern int radeon_suspend_kms(struct drm_device *dev, pm_message_t state);
+extern void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size);
 
 /* r600, rv610, rv630, rv620, rv635, rv670, rs780, rs880 */
 extern bool r600_card_posted(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index df95eb8..1fe95df 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -156,9 +156,12 @@
 {
 	struct radeon_device *rdev = dev->dev_private;
 	struct drm_radeon_gem_info *args = data;
+	struct ttm_mem_type_manager *man;
+
+	man = &rdev->mman.bdev.man[TTM_PL_VRAM];
 
 	args->vram_size = rdev->mc.real_vram_size;
-	args->vram_visible = rdev->mc.real_vram_size;
+	args->vram_visible = (u64)man->size << PAGE_SHIFT;
 	if (rdev->stollen_vga_memory)
 		args->vram_visible -= radeon_bo_size(rdev->stollen_vga_memory);
 	args->vram_visible -= radeon_fbdev_total_size(rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index e5b2cf1..8389b4c 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -589,6 +589,20 @@
 	DRM_INFO("radeon: ttm finalized\n");
 }
 
+/* this should only be called at bootup or when userspace
+ * isn't running */
+void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
+{
+	struct ttm_mem_type_manager *man;
+
+	if (!rdev->mman.initialized)
+		return;
+
+	man = &rdev->mman.bdev.man[TTM_PL_VRAM];
+	/* this just adjusts TTM size idea, which sets lpfn to the correct value */
+	man->size = size >> PAGE_SHIFT;
+}
+
 static struct vm_operations_struct radeon_ttm_vm_ops;
 static const struct vm_operations_struct *ttm_vm_ops = NULL;
 
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 5afe294..8af4679 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -751,7 +751,6 @@
 	rdev->mc.real_vram_size = RREG32(RADEON_CONFIG_MEMSIZE);
 	rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
 	base = RREG32_MC(R_000004_MC_FB_LOCATION);
 	base = G_000004_MC_FB_START(base) << 16;
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 6638c8e..66c949b 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -157,7 +157,6 @@
 	rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
 	rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	base = RREG32_MC(R_000100_MCCFG_FB_LOCATION);
 	base = G_000100_MC_FB_START(base) << 16;
 	rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index d8ba676..714ad45 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -307,7 +307,7 @@
  */
 void r700_cp_stop(struct radeon_device *rdev)
 {
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
+	radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
 	WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT));
 	WREG32(SCRATCH_UMSK, 0);
 }
@@ -1123,7 +1123,6 @@
 	rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE);
 	rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
 	rdev->mc.visible_vram_size = rdev->mc.aper_size;
-	rdev->mc.active_vram_size = rdev->mc.visible_vram_size;
 	r700_vram_gtt_location(rdev, &rdev->mc);
 	radeon_update_bandwidth_info(rdev);
 
diff --git a/drivers/watchdog/cpwd.c b/drivers/watchdog/cpwd.c
index eca855a..3de4ba0 100644
--- a/drivers/watchdog/cpwd.c
+++ b/drivers/watchdog/cpwd.c
@@ -646,7 +646,7 @@
 	struct cpwd *p = dev_get_drvdata(&op->dev);
 	int i;
 
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < WD_NUMDEVS; i++) {
 		misc_deregister(&p->devs[i].misc);
 
 		if (!p->enabled) {
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 24b966d..204a560 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -710,7 +710,7 @@
 	return 0;
 }
 
-static void __devexit hpwdt_exit_nmi_decoding(void)
+static void hpwdt_exit_nmi_decoding(void)
 {
 	unregister_die_notifier(&die_notifier);
 	if (cru_rom_addr)
@@ -726,7 +726,7 @@
 	return 0;
 }
 
-static void __devexit hpwdt_exit_nmi_decoding(void)
+static void hpwdt_exit_nmi_decoding(void)
 {
 }
 #endif /* CONFIG_HPWDT_NMI_DECODING */
diff --git a/drivers/watchdog/sch311x_wdt.c b/drivers/watchdog/sch311x_wdt.c
index 0461858..b61ab1c 100644
--- a/drivers/watchdog/sch311x_wdt.c
+++ b/drivers/watchdog/sch311x_wdt.c
@@ -508,7 +508,7 @@
 	sch311x_sio_outb(sio_config_port, 0x07, 0x0a);
 
 	/* Check if Logical Device Register is currently active */
-	if (sch311x_sio_inb(sio_config_port, 0x30) && 0x01 == 0)
+	if ((sch311x_sio_inb(sio_config_port, 0x30) & 0x01) == 0)
 		printk(KERN_INFO PFX "Seems that LDN 0x0a is not active...\n");
 
 	/* Get the base address of the runtime registers */
diff --git a/drivers/watchdog/w83697ug_wdt.c b/drivers/watchdog/w83697ug_wdt.c
index a6c12de..df2a64d 100644
--- a/drivers/watchdog/w83697ug_wdt.c
+++ b/drivers/watchdog/w83697ug_wdt.c
@@ -109,7 +109,7 @@
 	outb_p(0x08, WDT_EFDR); /* select logical device 8 (GPIO2) */
 	outb_p(0x30, WDT_EFER); /* select CR30 */
 	c = inb_p(WDT_EFDR);
-	outb_p(c || 0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
+	outb_p(c | 0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
 
 	return 0;
 }
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 1cc600e..2f8e618 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -37,6 +37,7 @@
 #include <linux/inet.h>
 #include <linux/nfs_xdr.h>
 #include <linux/slab.h>
+#include <linux/compat.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -89,7 +90,11 @@
  */
 u64 nfs_compat_user_ino64(u64 fileid)
 {
-	int ino;
+#ifdef CONFIG_COMPAT
+	compat_ulong_t ino;
+#else	
+	unsigned long ino;
+#endif
 
 	if (enable_ino64)
 		return fileid;
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 7a74740..1be36cf 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -298,6 +298,11 @@
 #if defined(CONFIG_NFS_V4_1)
 struct rpc_cred *nfs4_get_machine_cred_locked(struct nfs_client *clp);
 struct rpc_cred *nfs4_get_exchange_id_cred(struct nfs_client *clp);
+extern void nfs4_schedule_session_recovery(struct nfs4_session *);
+#else
+static inline void nfs4_schedule_session_recovery(struct nfs4_session *session)
+{
+}
 #endif /* CONFIG_NFS_V4_1 */
 
 extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
@@ -307,10 +312,9 @@
 extern void nfs4_close_state(struct path *, struct nfs4_state *, fmode_t);
 extern void nfs4_close_sync(struct path *, struct nfs4_state *, fmode_t);
 extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
-extern void nfs4_schedule_state_recovery(struct nfs_client *);
+extern void nfs4_schedule_lease_recovery(struct nfs_client *);
 extern void nfs4_schedule_state_manager(struct nfs_client *);
-extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
-extern int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state);
+extern void nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *);
 extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
 extern void nfs41_handle_recall_slot(struct nfs_client *clp);
 extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c
index f5c9b12..b73c343 100644
--- a/fs/nfs/nfs4filelayoutdev.c
+++ b/fs/nfs/nfs4filelayoutdev.c
@@ -219,6 +219,10 @@
 		goto out_err;
 	}
 	buf = kmalloc(rlen + 1, GFP_KERNEL);
+	if (!buf) {
+		dprintk("%s: Not enough memory\n", __func__);
+		goto out_err;
+	}
 	buf[rlen] = '\0';
 	memcpy(buf, r_addr, rlen);
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 1ff76ac..0a07e35 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -51,7 +51,6 @@
 #include <linux/sunrpc/bc_xprt.h>
 #include <linux/xattr.h>
 #include <linux/utsname.h>
-#include <linux/mm.h>
 
 #include "nfs4_fs.h"
 #include "delegation.h"
@@ -257,12 +256,13 @@
 		case -NFS4ERR_OPENMODE:
 			if (state == NULL)
 				break;
-			nfs4_state_mark_reclaim_nograce(clp, state);
-			goto do_state_recovery;
+			nfs4_schedule_stateid_recovery(server, state);
+			goto wait_on_recovery;
 		case -NFS4ERR_STALE_STATEID:
 		case -NFS4ERR_STALE_CLIENTID:
 		case -NFS4ERR_EXPIRED:
-			goto do_state_recovery;
+			nfs4_schedule_lease_recovery(clp);
+			goto wait_on_recovery;
 #if defined(CONFIG_NFS_V4_1)
 		case -NFS4ERR_BADSESSION:
 		case -NFS4ERR_BADSLOT:
@@ -273,7 +273,7 @@
 		case -NFS4ERR_SEQ_MISORDERED:
 			dprintk("%s ERROR: %d Reset session\n", __func__,
 				errorcode);
-			nfs4_schedule_state_recovery(clp);
+			nfs4_schedule_session_recovery(clp->cl_session);
 			exception->retry = 1;
 			break;
 #endif /* defined(CONFIG_NFS_V4_1) */
@@ -296,8 +296,7 @@
 	}
 	/* We failed to handle the error */
 	return nfs4_map_errors(ret);
-do_state_recovery:
-	nfs4_schedule_state_recovery(clp);
+wait_on_recovery:
 	ret = nfs4_wait_clnt_recover(clp);
 	if (ret == 0)
 		exception->retry = 1;
@@ -436,8 +435,8 @@
 		clp = res->sr_session->clp;
 		do_renew_lease(clp, timestamp);
 		/* Check sequence flags */
-		if (atomic_read(&clp->cl_count) > 1)
-			nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
+		if (res->sr_status_flags != 0)
+			nfs4_schedule_lease_recovery(clp);
 		break;
 	case -NFS4ERR_DELAY:
 		/* The server detected a resend of the RPC call and
@@ -1256,14 +1255,13 @@
 			case -NFS4ERR_BAD_HIGH_SLOT:
 			case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
 			case -NFS4ERR_DEADSESSION:
-				nfs4_schedule_state_recovery(
-					server->nfs_client);
+				nfs4_schedule_session_recovery(server->nfs_client->cl_session);
 				goto out;
 			case -NFS4ERR_STALE_CLIENTID:
 			case -NFS4ERR_STALE_STATEID:
 			case -NFS4ERR_EXPIRED:
 				/* Don't recall a delegation if it was lost */
-				nfs4_schedule_state_recovery(server->nfs_client);
+				nfs4_schedule_lease_recovery(server->nfs_client);
 				goto out;
 			case -ERESTARTSYS:
 				/*
@@ -1272,7 +1270,7 @@
 				 */
 			case -NFS4ERR_ADMIN_REVOKED:
 			case -NFS4ERR_BAD_STATEID:
-				nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+				nfs4_schedule_stateid_recovery(server, state);
 			case -EKEYEXPIRED:
 				/*
 				 * User RPCSEC_GSS context has expired.
@@ -1588,7 +1586,7 @@
 		if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) &&
 		    !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state))
 			break;
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_state_manager(clp);
 		ret = -EIO;
 	}
 	return ret;
@@ -3179,7 +3177,7 @@
 	if (task->tk_status < 0) {
 		/* Unless we're shutting down, schedule state recovery! */
 		if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0)
-			nfs4_schedule_state_recovery(clp);
+			nfs4_schedule_lease_recovery(clp);
 		return;
 	}
 	do_renew_lease(clp, timestamp);
@@ -3262,7 +3260,7 @@
 	spages = pages;
 
 	do {
-		len = min(PAGE_CACHE_SIZE, buflen);
+		len = min_t(size_t, PAGE_CACHE_SIZE, buflen);
 		newpage = alloc_page(GFP_KERNEL);
 
 		if (newpage == NULL)
@@ -3504,12 +3502,13 @@
 		case -NFS4ERR_OPENMODE:
 			if (state == NULL)
 				break;
-			nfs4_state_mark_reclaim_nograce(clp, state);
-			goto do_state_recovery;
+			nfs4_schedule_stateid_recovery(server, state);
+			goto wait_on_recovery;
 		case -NFS4ERR_STALE_STATEID:
 		case -NFS4ERR_STALE_CLIENTID:
 		case -NFS4ERR_EXPIRED:
-			goto do_state_recovery;
+			nfs4_schedule_lease_recovery(clp);
+			goto wait_on_recovery;
 #if defined(CONFIG_NFS_V4_1)
 		case -NFS4ERR_BADSESSION:
 		case -NFS4ERR_BADSLOT:
@@ -3520,7 +3519,7 @@
 		case -NFS4ERR_SEQ_MISORDERED:
 			dprintk("%s ERROR %d, Reset session\n", __func__,
 				task->tk_status);
-			nfs4_schedule_state_recovery(clp);
+			nfs4_schedule_session_recovery(clp->cl_session);
 			task->tk_status = 0;
 			return -EAGAIN;
 #endif /* CONFIG_NFS_V4_1 */
@@ -3537,9 +3536,8 @@
 	}
 	task->tk_status = nfs4_map_errors(task->tk_status);
 	return 0;
-do_state_recovery:
+wait_on_recovery:
 	rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
-	nfs4_schedule_state_recovery(clp);
 	if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
 		rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
 	task->tk_status = 0;
@@ -4150,7 +4148,7 @@
 		task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
 				data->arg.lock_seqid);
 		if (!IS_ERR(task))
-			rpc_put_task(task);
+			rpc_put_task_async(task);
 		dprintk("%s: cancelling lock!\n", __func__);
 	} else
 		nfs_free_seqid(data->arg.lock_seqid);
@@ -4174,23 +4172,18 @@
 
 static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
 {
-	struct nfs_client *clp = server->nfs_client;
-	struct nfs4_state *state = lsp->ls_state;
-
 	switch (error) {
 	case -NFS4ERR_ADMIN_REVOKED:
 	case -NFS4ERR_BAD_STATEID:
-	case -NFS4ERR_EXPIRED:
+		lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
 		if (new_lock_owner != 0 ||
 		   (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
-			nfs4_state_mark_reclaim_nograce(clp, state);
-		lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+			nfs4_schedule_stateid_recovery(server, lsp->ls_state);
 		break;
 	case -NFS4ERR_STALE_STATEID:
-		if (new_lock_owner != 0 ||
-		    (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
-			nfs4_state_mark_reclaim_reboot(clp, state);
 		lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+	case -NFS4ERR_EXPIRED:
+		nfs4_schedule_lease_recovery(server->nfs_client);
 	};
 }
 
@@ -4406,12 +4399,14 @@
 			case -NFS4ERR_EXPIRED:
 			case -NFS4ERR_STALE_CLIENTID:
 			case -NFS4ERR_STALE_STATEID:
+				nfs4_schedule_lease_recovery(server->nfs_client);
+				goto out;
 			case -NFS4ERR_BADSESSION:
 			case -NFS4ERR_BADSLOT:
 			case -NFS4ERR_BAD_HIGH_SLOT:
 			case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
 			case -NFS4ERR_DEADSESSION:
-				nfs4_schedule_state_recovery(server->nfs_client);
+				nfs4_schedule_session_recovery(server->nfs_client->cl_session);
 				goto out;
 			case -ERESTARTSYS:
 				/*
@@ -4421,7 +4416,7 @@
 			case -NFS4ERR_ADMIN_REVOKED:
 			case -NFS4ERR_BAD_STATEID:
 			case -NFS4ERR_OPENMODE:
-				nfs4_state_mark_reclaim_nograce(server->nfs_client, state);
+				nfs4_schedule_stateid_recovery(server, state);
 				err = 0;
 				goto out;
 			case -EKEYEXPIRED:
@@ -5028,10 +5023,20 @@
 	int status;
 	unsigned *ptr;
 	struct nfs4_session *session = clp->cl_session;
+	long timeout = 0;
+	int err;
 
 	dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
 
-	status = _nfs4_proc_create_session(clp);
+	do {
+		status = _nfs4_proc_create_session(clp);
+		if (status == -NFS4ERR_DELAY) {
+			err = nfs4_delay(clp->cl_rpcclient, &timeout);
+			if (err)
+				status = err;
+		}
+	} while (status == -NFS4ERR_DELAY);
+
 	if (status)
 		goto out;
 
@@ -5140,7 +5145,7 @@
 		rpc_delay(task, NFS4_POLL_RETRY_MAX);
 		return -EAGAIN;
 	default:
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_lease_recovery(clp);
 	}
 	return 0;
 }
@@ -5227,7 +5232,7 @@
 	if (IS_ERR(task))
 		ret = PTR_ERR(task);
 	else
-		rpc_put_task(task);
+		rpc_put_task_async(task);
 	dprintk("<-- %s status=%d\n", __func__, ret);
 	return ret;
 }
@@ -5243,8 +5248,13 @@
 		goto out;
 	}
 	ret = rpc_wait_for_completion_task(task);
-	if (!ret)
+	if (!ret) {
+		struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
+
+		if (task->tk_status == 0)
+			nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
 		ret = task->tk_status;
+	}
 	rpc_put_task(task);
 out:
 	dprintk("<-- %s status=%d\n", __func__, ret);
@@ -5281,7 +5291,7 @@
 		rpc_delay(task, NFS4_POLL_RETRY_MAX);
 		return -EAGAIN;
 	default:
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_lease_recovery(clp);
 	}
 	return 0;
 }
@@ -5349,6 +5359,9 @@
 		status = PTR_ERR(task);
 		goto out;
 	}
+	status = nfs4_wait_for_completion_rpc_task(task);
+	if (status == 0)
+		status = task->tk_status;
 	rpc_put_task(task);
 	return 0;
 out:
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index e6742b5..0592288 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1007,9 +1007,9 @@
 }
 
 /*
- * Schedule a state recovery attempt
+ * Schedule a lease recovery attempt
  */
-void nfs4_schedule_state_recovery(struct nfs_client *clp)
+void nfs4_schedule_lease_recovery(struct nfs_client *clp)
 {
 	if (!clp)
 		return;
@@ -1018,7 +1018,7 @@
 	nfs4_schedule_state_manager(clp);
 }
 
-int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
+static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
 {
 
 	set_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@@ -1032,7 +1032,7 @@
 	return 1;
 }
 
-int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
+static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
 {
 	set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags);
 	clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@@ -1041,6 +1041,14 @@
 	return 1;
 }
 
+void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_state *state)
+{
+	struct nfs_client *clp = server->nfs_client;
+
+	nfs4_state_mark_reclaim_nograce(clp, state);
+	nfs4_schedule_state_manager(clp);
+}
+
 static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_recovery_ops *ops)
 {
 	struct inode *inode = state->inode;
@@ -1436,10 +1444,15 @@
 }
 
 #ifdef CONFIG_NFS_V4_1
+void nfs4_schedule_session_recovery(struct nfs4_session *session)
+{
+	nfs4_schedule_lease_recovery(session->clp);
+}
+
 void nfs41_handle_recall_slot(struct nfs_client *clp)
 {
 	set_bit(NFS4CLNT_RECALL_SLOT, &clp->cl_state);
-	nfs4_schedule_state_recovery(clp);
+	nfs4_schedule_state_manager(clp);
 }
 
 static void nfs4_reset_all_state(struct nfs_client *clp)
@@ -1447,7 +1460,7 @@
 	if (test_and_set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0) {
 		clp->cl_boot_time = CURRENT_TIME;
 		nfs4_state_start_reclaim_nograce(clp);
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_state_manager(clp);
 	}
 }
 
@@ -1455,7 +1468,7 @@
 {
 	if (test_and_set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) == 0) {
 		nfs4_state_start_reclaim_reboot(clp);
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_state_manager(clp);
 	}
 }
 
@@ -1475,7 +1488,7 @@
 {
 	nfs_expire_all_delegations(clp);
 	if (test_and_set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) == 0)
-		nfs4_schedule_state_recovery(clp);
+		nfs4_schedule_state_manager(clp);
 }
 
 void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 4e2c168..94d50e8 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1660,7 +1660,7 @@
 
 	p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
 	*p++ = cpu_to_be32(OP_CREATE_SESSION);
-	p = xdr_encode_hyper(p, clp->cl_ex_clid);
+	p = xdr_encode_hyper(p, clp->cl_clientid);
 	*p++ = cpu_to_be32(clp->cl_seqid);			/*Sequence id */
 	*p++ = cpu_to_be32(args->flags);			/*flags */
 
@@ -4694,7 +4694,7 @@
 	p = xdr_inline_decode(xdr, 8);
 	if (unlikely(!p))
 		goto out_overflow;
-	xdr_decode_hyper(p, &clp->cl_ex_clid);
+	xdr_decode_hyper(p, &clp->cl_clientid);
 	p = xdr_inline_decode(xdr, 12);
 	if (unlikely(!p))
 		goto out_overflow;
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index 903908a..c541093 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -86,11 +86,14 @@
 /* Default path we try to mount. "%s" gets replaced by our IP address */
 #define NFS_ROOT		"/tftpboot/%s"
 
+/* Default NFSROOT mount options. */
+#define NFS_DEF_OPTIONS		"udp"
+
 /* Parameters passed from the kernel command line */
 static char nfs_root_parms[256] __initdata = "";
 
 /* Text-based mount options passed to super.c */
-static char nfs_root_options[256] __initdata = "";
+static char nfs_root_options[256] __initdata = NFS_DEF_OPTIONS;
 
 /* Address of NFS server */
 static __be32 servaddr __initdata = htonl(INADDR_NONE);
@@ -160,8 +163,14 @@
 }
 
 static int __init root_nfs_cat(char *dest, const char *src,
-				  const size_t destlen)
+			       const size_t destlen)
 {
+	size_t len = strlen(dest);
+
+	if (len && dest[len - 1] != ',')
+		if (strlcat(dest, ",", destlen) > destlen)
+			return -1;
+
 	if (strlcat(dest, src, destlen) > destlen)
 		return -1;
 	return 0;
@@ -194,16 +203,6 @@
 		if (root_nfs_cat(nfs_root_options, incoming,
 						sizeof(nfs_root_options)))
 			return -1;
-
-	/*
-	 * Possibly prepare for more options to be appended
-	 */
-	if (nfs_root_options[0] != '\0' &&
-	    nfs_root_options[strlen(nfs_root_options)] != ',')
-		if (root_nfs_cat(nfs_root_options, ",",
-						sizeof(nfs_root_options)))
-			return -1;
-
 	return 0;
 }
 
@@ -217,7 +216,7 @@
  */
 static int __init root_nfs_data(char *cmdline)
 {
-	char addr_option[sizeof("nolock,addr=") + INET_ADDRSTRLEN + 1];
+	char mand_options[sizeof("nolock,addr=") + INET_ADDRSTRLEN + 1];
 	int len, retval = -1;
 	char *tmp = NULL;
 	const size_t tmplen = sizeof(nfs_export_path);
@@ -244,9 +243,9 @@
 	 * Append mandatory options for nfsroot so they override
 	 * what has come before
 	 */
-	snprintf(addr_option, sizeof(addr_option), "nolock,addr=%pI4",
+	snprintf(mand_options, sizeof(mand_options), "nolock,addr=%pI4",
 			&servaddr);
-	if (root_nfs_cat(nfs_root_options, addr_option,
+	if (root_nfs_cat(nfs_root_options, mand_options,
 						sizeof(nfs_root_options)))
 		goto out_optionstoolong;
 
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index e313a51..6481d53 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -180,7 +180,7 @@
 	task_setup_data.rpc_client = NFS_CLIENT(dir);
 	task = rpc_run_task(&task_setup_data);
 	if (!IS_ERR(task))
-		rpc_put_task(task);
+		rpc_put_task_async(task);
 	return 1;
 }
 
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index c8278f4..42b92d7 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1292,6 +1292,8 @@
 	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
+	if (how & FLUSH_SYNC)
+		rpc_wait_for_completion_task(task);
 	rpc_put_task(task);
 	return 0;
 }
diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
index 48cec7c..be03a0b 100644
--- a/fs/partitions/osf.c
+++ b/fs/partitions/osf.c
@@ -10,10 +10,13 @@
 #include "check.h"
 #include "osf.h"
 
+#define MAX_OSF_PARTITIONS 8
+
 int osf_partition(struct parsed_partitions *state)
 {
 	int i;
 	int slot = 1;
+	unsigned int npartitions;
 	Sector sect;
 	unsigned char *data;
 	struct disklabel {
@@ -45,7 +48,7 @@
 			u8  p_fstype;
 			u8  p_frag;
 			__le16 p_cpg;
-		} d_partitions[8];
+		} d_partitions[MAX_OSF_PARTITIONS];
 	} * label;
 	struct d_partition * partition;
 
@@ -63,7 +66,12 @@
 		put_dev_sector(sect);
 		return 0;
 	}
-	for (i = 0 ; i < le16_to_cpu(label->d_npartitions); i++, partition++) {
+	npartitions = le16_to_cpu(label->d_npartitions);
+	if (npartitions > MAX_OSF_PARTITIONS) {
+		put_dev_sector(sect);
+		return 0;
+	}
+	for (i = 0 ; i < npartitions; i++, partition++) {
 		if (slot == state->limit)
 		        break;
 		if (le32_to_cpu(partition->p_size))
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index b197563..3e112de 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -68,11 +68,7 @@
 	unsigned char		cl_id_uniquifier;
 	u32			cl_cb_ident;	/* v4.0 callback identifier */
 	const struct nfs4_minor_version_ops *cl_mvops;
-#endif /* CONFIG_NFS_V4 */
 
-#ifdef CONFIG_NFS_V4_1
-	/* clientid returned from EXCHANGE_ID, used by session operations */
-	u64			cl_ex_clid;
 	/* The sequence id to use for the next CREATE_SESSION */
 	u32			cl_seqid;
 	/* The flags used for obtaining the clientid during EXCHANGE_ID */
@@ -80,7 +76,7 @@
 	struct nfs4_session	*cl_session; 	/* sharred session */
 	struct list_head	cl_layouts;
 	struct pnfs_deviceid_cache *cl_devid_cache; /* pNFS deviceid cache */
-#endif /* CONFIG_NFS_V4_1 */
+#endif /* CONFIG_NFS_V4 */
 
 #ifdef CONFIG_NFS_FSCACHE
 	struct fscache_cookie	*fscache;	/* client index cache cookie */
@@ -185,7 +181,7 @@
 /* maximum number of slots to use */
 #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
 
-#if defined(CONFIG_NFS_V4_1)
+#if defined(CONFIG_NFS_V4)
 
 /* Sessions */
 #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
@@ -225,5 +221,5 @@
 	struct nfs_client		*clp;
 };
 
-#endif /* CONFIG_NFS_V4_1 */
+#endif /* CONFIG_NFS_V4 */
 #endif
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 88513fd..d81db80 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -212,6 +212,7 @@
 struct rpc_task *rpc_run_bc_task(struct rpc_rqst *req,
 				const struct rpc_call_ops *ops);
 void		rpc_put_task(struct rpc_task *);
+void		rpc_put_task_async(struct rpc_task *);
 void		rpc_exit_task(struct rpc_task *);
 void		rpc_exit(struct rpc_task *, int);
 void		rpc_release_calldata(const struct rpc_call_ops *, void *);
diff --git a/kernel/sched.c b/kernel/sched.c
index 18d38e4..42eab5a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4213,6 +4213,7 @@
 {
 	__wake_up_common(q, mode, 1, 0, key);
 }
+EXPORT_SYMBOL_GPL(__wake_up_locked_key);
 
 /**
  * __wake_up_sync_key - wake up threads blocked on a waitqueue.
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index dbe99a5..113e35c 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1762,6 +1762,10 @@
 #ifndef CONFIG_NUMA
 	VM_BUG_ON(!*hpage);
 	new_page = *hpage;
+	if (unlikely(mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL))) {
+		up_read(&mm->mmap_sem);
+		return;
+	}
 #else
 	VM_BUG_ON(*hpage);
 	/*
@@ -1781,12 +1785,12 @@
 		*hpage = ERR_PTR(-ENOMEM);
 		return;
 	}
-#endif
 	if (unlikely(mem_cgroup_newpage_charge(new_page, mm, GFP_KERNEL))) {
 		up_read(&mm->mmap_sem);
 		put_page(new_page);
 		return;
 	}
+#endif
 
 	/* after allocating the hugepage upgrade to mmap_sem write mode */
 	up_read(&mm->mmap_sem);
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 243fc09..59e5994 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -252,23 +252,37 @@
 
 /*
  * Mark an RPC call as having completed by clearing the 'active' bit
+ * and then waking up all tasks that were sleeping.
  */
-static void rpc_mark_complete_task(struct rpc_task *task)
+static int rpc_complete_task(struct rpc_task *task)
 {
-	smp_mb__before_clear_bit();
+	void *m = &task->tk_runstate;
+	wait_queue_head_t *wq = bit_waitqueue(m, RPC_TASK_ACTIVE);
+	struct wait_bit_key k = __WAIT_BIT_KEY_INITIALIZER(m, RPC_TASK_ACTIVE);
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&wq->lock, flags);
 	clear_bit(RPC_TASK_ACTIVE, &task->tk_runstate);
-	smp_mb__after_clear_bit();
-	wake_up_bit(&task->tk_runstate, RPC_TASK_ACTIVE);
+	ret = atomic_dec_and_test(&task->tk_count);
+	if (waitqueue_active(wq))
+		__wake_up_locked_key(wq, TASK_NORMAL, &k);
+	spin_unlock_irqrestore(&wq->lock, flags);
+	return ret;
 }
 
 /*
  * Allow callers to wait for completion of an RPC call
+ *
+ * Note the use of out_of_line_wait_on_bit() rather than wait_on_bit()
+ * to enforce taking of the wq->lock and hence avoid races with
+ * rpc_complete_task().
  */
 int __rpc_wait_for_completion_task(struct rpc_task *task, int (*action)(void *))
 {
 	if (action == NULL)
 		action = rpc_wait_bit_killable;
-	return wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE,
+	return out_of_line_wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE,
 			action, TASK_KILLABLE);
 }
 EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
@@ -857,34 +871,67 @@
 	rpc_free_task(container_of(work, struct rpc_task, u.tk_work));
 }
 
-void rpc_put_task(struct rpc_task *task)
+static void rpc_release_resources_task(struct rpc_task *task)
 {
-	if (!atomic_dec_and_test(&task->tk_count))
-		return;
-	/* Release resources */
 	if (task->tk_rqstp)
 		xprt_release(task);
 	if (task->tk_msg.rpc_cred)
 		put_rpccred(task->tk_msg.rpc_cred);
 	rpc_task_release_client(task);
-	if (task->tk_workqueue != NULL) {
+}
+
+static void rpc_final_put_task(struct rpc_task *task,
+		struct workqueue_struct *q)
+{
+	if (q != NULL) {
 		INIT_WORK(&task->u.tk_work, rpc_async_release);
-		queue_work(task->tk_workqueue, &task->u.tk_work);
+		queue_work(q, &task->u.tk_work);
 	} else
 		rpc_free_task(task);
 }
+
+static void rpc_do_put_task(struct rpc_task *task, struct workqueue_struct *q)
+{
+	if (atomic_dec_and_test(&task->tk_count)) {
+		rpc_release_resources_task(task);
+		rpc_final_put_task(task, q);
+	}
+}
+
+void rpc_put_task(struct rpc_task *task)
+{
+	rpc_do_put_task(task, NULL);
+}
 EXPORT_SYMBOL_GPL(rpc_put_task);
 
+void rpc_put_task_async(struct rpc_task *task)
+{
+	rpc_do_put_task(task, task->tk_workqueue);
+}
+EXPORT_SYMBOL_GPL(rpc_put_task_async);
+
 static void rpc_release_task(struct rpc_task *task)
 {
 	dprintk("RPC: %5u release task\n", task->tk_pid);
 
 	BUG_ON (RPC_IS_QUEUED(task));
 
-	/* Wake up anyone who is waiting for task completion */
-	rpc_mark_complete_task(task);
+	rpc_release_resources_task(task);
 
-	rpc_put_task(task);
+	/*
+	 * Note: at this point we have been removed from rpc_clnt->cl_tasks,
+	 * so it should be safe to use task->tk_count as a test for whether
+	 * or not any other processes still hold references to our rpc_task.
+	 */
+	if (atomic_read(&task->tk_count) != 1 + !RPC_IS_ASYNC(task)) {
+		/* Wake up anyone who may be waiting for task completion */
+		if (!rpc_complete_task(task))
+			return;
+	} else {
+		if (!atomic_dec_and_test(&task->tk_count))
+			return;
+	}
+	rpc_final_put_task(task, task->tk_workqueue);
 }
 
 int rpciod_up(void)
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 9df1ead..1a10dcd 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1335,6 +1335,7 @@
 					    p, 0, length, DMA_FROM_DEVICE);
 	if (ib_dma_mapping_error(xprt->sc_cm_id->device, ctxt->sge[0].addr)) {
 		put_page(p);
+		svc_rdma_put_context(ctxt, 1);
 		return;
 	}
 	atomic_inc(&xprt->sc_dma_used);
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index c431f5a..be96d42 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1631,7 +1631,8 @@
 	}
 	xs_reclassify_socket(family, sock);
 
-	if (xs_bind(transport, sock)) {
+	err = xs_bind(transport, sock);
+	if (err) {
 		sock_release(sock);
 		goto out;
 	}