Merge branch 'akpm' (patches from Andrew)

Merge updates from Andrew Morton:

 - fsnotify updates

 - ocfs2 updates

 - all of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits)
  console: don't prefer first registered if DT specifies stdout-path
  cred: simpler, 1D supplementary groups
  CREDITS: update Pavel's information, add GPG key, remove snail mail address
  mailmap: add Johan Hovold
  .gitattributes: set git diff driver for C source code files
  uprobes: remove function declarations from arch/{mips,s390}
  spelling.txt: "modeled" is spelt correctly
  nmi_backtrace: generate one-line reports for idle cpus
  arch/tile: adopt the new nmi_backtrace framework
  nmi_backtrace: do a local dump_stack() instead of a self-NMI
  nmi_backtrace: add more trigger_*_cpu_backtrace() methods
  min/max: remove sparse warnings when they're nested
  Documentation/filesystems/proc.txt: add more description for maps/smaps
  mm, proc: fix region lost in /proc/self/smaps
  proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self
  proc: add LSM hook checks to /proc/<tid>/timerslack_ns
  proc: relax /proc/<tid>/timerslack_ns capability requirements
  meminfo: break apart a very long seq_printf with #ifdefs
  seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char
  proc: faster /proc/*/status
  ...

.gitattributes

@@ -0,0 +1,2 @@
+*.c   diff=cpp
+*.h   diff=cpp

.mailmap

@@ -75,6 +75,8 @@ Jean Tourrilhes <jt@hpl.hp.com>
 Jeff Garzik <jgarzik@pretzel.yyz.us>
 Jens Axboe <axboe@suse.de>
 Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
+Johan Hovold <johan@kernel.org> <jhovold@gmail.com>
+Johan Hovold <johan@kernel.org> <johan@hovoldconsulting.com>
 John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
 John Stultz <johnstul@us.ibm.com>
 <josh@joshtriplett.org> <josh@freedesktop.org>

CREDITS

@@ -2296,11 +2296,11 @@ D: Initial implementation of VC's, pty's and select()
 
 N: Pavel Machek
 E: pavel@ucw.cz
-D: Softcursor for vga, hypertech cdrom support, vcsa bugfix, nbd
+P: 4096R/92DFCE96 4FA7 9EEF FCD4 C44F C585  B8C7 C060 2241 92DF CE96
+D: Softcursor for vga, hypertech cdrom support, vcsa bugfix, nbd,
 D: sun4/330 port, capabilities for elf, speedup for rm on ext2, USB,
-D: work on suspend-to-ram/disk, killing duplicates from ioctl32
-S: Volkova 1131
-S: 198 00 Praha 9
+D: work on suspend-to-ram/disk, killing duplicates from ioctl32,
+D: Altera SoCFPGA and Nokia N900 support.
 S: Czech Republic
 
 N: Paul Mackerras

Documentation/filesystems/proc.txt

@@ -515,6 +515,18 @@ be vanished or the reverse -- new added.
 This file is only present if the CONFIG_MMU kernel configuration option is
 enabled.
 
+Note: reading /proc/PID/maps or /proc/PID/smaps is inherently racy (consistent
+output can be achieved only in the single read call).
+This typically manifests when doing partial reads of these files while the
+memory map is being modified.  Despite the races, we do provide the following
+guarantees:
+
+1) The mapped addresses never go backwards, which implies no two
+   regions will ever overlap.
+2) If there is something at a given vaddr during the entirety of the
+   life of the smaps/maps walk, there will be some output for it.
+
+
 The /proc/PID/clear_refs is used to reset the PG_Referenced and ACCESSED/YOUNG
 bits on both physical and virtual pages associated with a process, and the
 soft-dirty bit on pte (see Documentation/vm/soft-dirty.txt for details).

arch/alpha/Kconfig

@@ -15,7 +15,6 @@ config ALPHA
 	select GENERIC_IRQ_SHOW
 	select ARCH_WANT_IPC_PARSE_VERSION
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select AUDIT_ARCH
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_SMP_IDLE_THREAD

arch/alpha/kernel/vmlinux.lds.S

@@ -22,6 +22,7 @@ SECTIONS
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		*(.fixup)
 		*(.gnu.warning)

arch/arc/kernel/vmlinux.lds.S

@@ -89,6 +89,7 @@ SECTIONS
 		_text = .;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		*(.fixup)

arch/arm/Kconfig

@@ -2,7 +2,6 @@ config ARM
 	bool
 	default y
 	select ARCH_CLOCKSOURCE_DATA
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

arch/arm/include/asm/irq.h

@@ -36,8 +36,9 @@ extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
 #endif
 
 #ifdef CONFIG_SMP
-extern void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace(x) arch_trigger_all_cpu_backtrace(x)
+extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
+					   bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 #endif
 
 static inline int nr_legacy_irqs(void)

arch/arm/kernel/smp.c

@@ -748,19 +748,10 @@ core_initcall(register_cpufreq_notifier);
 
 static void raise_nmi(cpumask_t *mask)
 {
-	/*
-	 * Generate the backtrace directly if we are running in a calling
-	 * context that is not preemptible by the backtrace IPI. Note
-	 * that nmi_cpu_backtrace() automatically removes the current cpu
-	 * from mask.
-	 */
-	if (cpumask_test_cpu(smp_processor_id(), mask) && irqs_disabled())
-		nmi_cpu_backtrace(NULL);
-
 	smp_cross_call(mask, IPI_CPU_BACKTRACE);
 }
 
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
 {
-	nmi_trigger_all_cpu_backtrace(include_self, raise_nmi);
+	nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_nmi);
 }

arch/arm/kernel/vmlinux-xip.lds.S

@@ -98,6 +98,7 @@ SECTIONS
 			IRQENTRY_TEXT
 			TEXT_TEXT
 			SCHED_TEXT
+			CPUIDLE_TEXT
 			LOCK_TEXT
 			KPROBES_TEXT
 			*(.gnu.warning)

arch/arm/kernel/vmlinux.lds.S

@@ -111,6 +111,7 @@ SECTIONS
 			SOFTIRQENTRY_TEXT
 			TEXT_TEXT
 			SCHED_TEXT
+			CPUIDLE_TEXT
 			LOCK_TEXT
 			HYPERVISOR_TEXT
 			KPROBES_TEXT

arch/arm64/Kconfig

@@ -8,9 +8,9 @@ config ARM64
 	select ARCH_CLOCKSOURCE_DATA
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_GCOV_PROFILE_ALL
+	select ARCH_HAS_GIGANTIC_PAGE
 	select ARCH_HAS_KCOV
 	select ARCH_HAS_SG_CHAIN
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

arch/arm64/kernel/vmlinux.lds.S

@@ -122,6 +122,7 @@ SECTIONS
 			ENTRY_TEXT
 			TEXT_TEXT
 			SCHED_TEXT
+			CPUIDLE_TEXT
 			LOCK_TEXT
 			KPROBES_TEXT
 			HYPERVISOR_TEXT

arch/avr32/kernel/vmlinux.lds.S

@@ -52,6 +52,7 @@ SECTIONS
 		KPROBES_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		*(.fixup)
 		*(.gnu.warning)

arch/blackfin/kernel/vmlinux.lds.S

@@ -33,6 +33,7 @@ SECTIONS
 #ifndef CONFIG_SCHEDULE_L1
 		SCHED_TEXT
 #endif
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		IRQENTRY_TEXT
 		SOFTIRQENTRY_TEXT

arch/c6x/kernel/vmlinux.lds.S

@@ -70,6 +70,7 @@ SECTIONS
 		_stext = .;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		IRQENTRY_TEXT
 		SOFTIRQENTRY_TEXT

arch/cris/kernel/vmlinux.lds.S

@@ -43,6 +43,7 @@ SECTIONS
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		*(.fixup)
 		*(.text.__*)

arch/frv/kernel/vmlinux.lds.S

@@ -63,6 +63,7 @@ SECTIONS
 	*(.text..tlbmiss)
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 #ifdef CONFIG_DEBUG_INFO
 	INIT_TEXT

arch/h8300/kernel/vmlinux.lds.S

@@ -29,6 +29,7 @@ SECTIONS
 	_stext = . ;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 #if defined(CONFIG_ROMKERNEL)
 		*(.int_redirect)

arch/hexagon/kernel/vmlinux.lds.S

@@ -50,6 +50,7 @@ SECTIONS
 		_text = .;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		*(.fixup)

arch/ia64/include/asm/atomic.h

@@ -269,6 +269,22 @@ static __inline__ long atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
 
+static __inline__ long atomic64_dec_if_positive(atomic64_t *v)
+{
+	long c, old, dec;
+	c = atomic64_read(v);
+	for (;;) {
+		dec = c - 1;
+		if (unlikely(dec < 0))
+			break;
+		old = atomic64_cmpxchg((v), c, dec);
+		if (likely(old == c))
+			break;
+		c = old;
+	}
+	return dec;
+}
+
 /*
  * Atomically add I to V and return TRUE if the resulting value is
  * negative.

arch/ia64/kernel/vmlinux.lds.S

@@ -46,6 +46,7 @@ SECTIONS {
 		__end_ivt_text = .;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		*(.gnu.linkonce.t*)

arch/m32r/kernel/vmlinux.lds.S

@@ -31,6 +31,7 @@ SECTIONS
 	HEAD_TEXT
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 	*(.fixup)
 	*(.gnu.warning)

arch/m68k/kernel/vmlinux-nommu.lds

@@ -45,6 +45,7 @@ SECTIONS {
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		*(.fixup)
 		. = ALIGN(16);

arch/m68k/kernel/vmlinux-std.lds

@@ -16,6 +16,7 @@ SECTIONS
 	HEAD_TEXT
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 	*(.fixup)
 	*(.gnu.warning)

arch/m68k/kernel/vmlinux-sun3.lds

@@ -16,6 +16,7 @@ SECTIONS
 	HEAD_TEXT
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 	*(.fixup)
 	*(.gnu.warning)

arch/metag/kernel/vmlinux.lds.S

@@ -21,6 +21,7 @@ SECTIONS
   .text : {
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
 	IRQENTRY_TEXT

arch/microblaze/kernel/vmlinux.lds.S

@@ -33,6 +33,7 @@ SECTIONS {
 		EXIT_TEXT
 		EXIT_CALL
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/mips/Kconfig

@@ -30,7 +30,6 @@ config MIPS
 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
 	select RTC_LIB if !MACH_LOONGSON64
 	select GENERIC_ATOMIC64 if !64BIT
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select HAVE_DMA_CONTIGUOUS
 	select HAVE_DMA_API_DEBUG
 	select GENERIC_IRQ_PROBE

arch/mips/include/asm/irq.h

@@ -51,7 +51,8 @@ extern int cp0_fdc_irq;
 
 extern int get_c0_fdc_int(void);
 
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+				    bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 
 #endif /* _ASM_IRQ_H */

arch/mips/include/asm/pgtable.h

@@ -673,8 +673,6 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 struct file;
 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 		unsigned long size, pgprot_t vma_prot);
-int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
-		unsigned long size, pgprot_t *vma_prot);
 #endif
 
 /*

arch/mips/include/asm/uprobes.h

@@ -42,16 +42,4 @@ struct arch_uprobe_task {
 	unsigned long saved_trap_nr;
 };
 
-extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup,
-	struct mm_struct *mm, unsigned long addr);
-extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
-extern int arch_uprobe_exception_notify(struct notifier_block *self,
-	unsigned long val, void *data);
-extern void arch_uprobe_abort_xol(struct arch_uprobe *aup,
-	struct pt_regs *regs);
-extern unsigned long arch_uretprobe_hijack_return_addr(
-	unsigned long trampoline_vaddr, struct pt_regs *regs);
-
 #endif /* __ASM_UPROBES_H */

arch/mips/kernel/process.c

@@ -569,9 +569,16 @@ static void arch_dump_stack(void *info)
 	dump_stack();
 }
 
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
 {
-	smp_call_function(arch_dump_stack, NULL, 1);
+	long this_cpu = get_cpu();
+
+	if (cpumask_test_cpu(this_cpu, mask) && !exclude_self)
+		dump_stack();
+
+	smp_call_function_many(mask, arch_dump_stack, NULL, 1);
+
+	put_cpu();
 }
 
 int mips_get_process_fp_mode(struct task_struct *task)

arch/mips/kernel/vmlinux.lds.S

@@ -55,6 +55,7 @@ SECTIONS
 	.text : {
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/mn10300/kernel/vmlinux.lds.S

@@ -30,6 +30,7 @@ SECTIONS
 	HEAD_TEXT
 	TEXT_TEXT
 	SCHED_TEXT
+	CPUIDLE_TEXT
 	LOCK_TEXT
 	KPROBES_TEXT
 	*(.fixup)

arch/nios2/kernel/vmlinux.lds.S

@@ -37,6 +37,7 @@ SECTIONS
 	.text : {
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		IRQENTRY_TEXT
 		SOFTIRQENTRY_TEXT

arch/openrisc/kernel/vmlinux.lds.S

@@ -47,6 +47,7 @@ SECTIONS
           _stext = .;
 	  TEXT_TEXT
 	  SCHED_TEXT
+	  CPUIDLE_TEXT
 	  LOCK_TEXT
 	  KPROBES_TEXT
 	  IRQENTRY_TEXT

arch/parisc/Kconfig

@@ -16,7 +16,6 @@ config PARISC
 	select BUILDTIME_EXTABLE_SORT
 	select HAVE_PERF_EVENTS
 	select GENERIC_ATOMIC64 if !64BIT
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select GENERIC_IRQ_PROBE
 	select GENERIC_PCI_IOMAP
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG

arch/parisc/kernel/vmlinux.lds.S

@@ -69,6 +69,7 @@ SECTIONS
 	.text ALIGN(PAGE_SIZE) : {
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/powerpc/Kconfig

@@ -108,7 +108,6 @@ config PPC
 	select HAVE_DEBUG_KMEMLEAK
 	select ARCH_HAS_SG_CHAIN
 	select GENERIC_ATOMIC64 if PPC32
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select HAVE_PERF_EVENTS
 	select HAVE_PERF_REGS
 	select HAVE_PERF_USER_STACK_DUMP

arch/powerpc/include/asm/mmzone.h

@@ -41,6 +41,9 @@ u64 memory_hotplug_max(void);
 #else
 #define memory_hotplug_max() memblock_end_of_DRAM()
 #endif /* CONFIG_NEED_MULTIPLE_NODES */
+#ifdef CONFIG_FA_DUMP
+#define __HAVE_ARCH_RESERVED_KERNEL_PAGES
+#endif
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_MMZONE_H_ */

arch/powerpc/kernel/fadump.c

@@ -333,6 +333,11 @@ int __init fadump_reserve_mem(void)
 	return 1;
 }
 
+unsigned long __init arch_reserved_kernel_pages(void)
+{
+	return memblock_reserved_size() / PAGE_SIZE;
+}
+
 /* Look for fadump= cmdline option. */
 static int __init early_fadump_param(char *p)
 {

arch/powerpc/kernel/vmlinux.lds.S

@@ -99,6 +99,7 @@ SECTIONS
 		/* careful! __ftr_alt_* sections need to be close to .text */
 		*(.text .fixup __ftr_alt_* .ref.text)
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/s390/Kconfig

@@ -67,10 +67,10 @@ config DEBUG_RODATA
 
 config S390
 	def_bool y
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_GCOV_PROFILE_ALL
+	select ARCH_HAS_GIGANTIC_PAGE
 	select ARCH_HAS_KCOV
 	select ARCH_HAS_SG_CHAIN
 	select ARCH_HAS_UBSAN_SANITIZE_ALL

arch/s390/include/asm/uprobes.h

@@ -29,14 +29,4 @@ struct arch_uprobe {
 struct arch_uprobe_task {
 };
 
-int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
-			     unsigned long addr);
-int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
-bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
-int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
-				 void *data);
-void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
-unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
-						struct pt_regs *regs);
 #endif	/* _ASM_UPROBES_H */

arch/s390/kernel/compat_linux.c

@@ -189,7 +189,7 @@ static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info
 	kgid_t kgid;
 
 	for (i = 0; i < group_info->ngroups; i++) {
-		kgid = GROUP_AT(group_info, i);
+		kgid = group_info->gid[i];
 		group = (u16)from_kgid_munged(user_ns, kgid);
 		if (put_user(group, grouplist+i))
 			return -EFAULT;
@@ -213,7 +213,7 @@ static int groups16_from_user(struct group_info *group_info, u16 __user *groupli
 		if (!gid_valid(kgid))
 			return -EINVAL;
 
-		GROUP_AT(group_info, i) = kgid;
+		group_info->gid[i] = kgid;
 	}
 
 	return 0;

arch/s390/kernel/vmlinux.lds.S

@@ -35,6 +35,7 @@ SECTIONS
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/score/kernel/vmlinux.lds.S

@@ -40,6 +40,7 @@ SECTIONS
 		_text = .;	/* Text and read-only data */
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		*(.text.*)

arch/sh/kernel/vmlinux.lds.S

@@ -36,6 +36,7 @@ SECTIONS
 		TEXT_TEXT
 		EXTRA_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/sparc/Kconfig

@@ -22,7 +22,6 @@ config SPARC
 	select HAVE_ARCH_TRACEHOOK
 	select HAVE_EXIT_THREAD
 	select SYSCTL_EXCEPTION_TRACE
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select RTC_CLASS
 	select RTC_DRV_M48T59
 	select RTC_SYSTOHC

arch/sparc/include/asm/irq_64.h

@@ -86,8 +86,9 @@ static inline unsigned long get_softint(void)
 	return retval;
 }
 
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+				    bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 
 extern void *hardirq_stack[NR_CPUS];
 extern void *softirq_stack[NR_CPUS];

arch/sparc/kernel/process_64.c

@@ -239,7 +239,7 @@ static void __global_reg_poll(struct global_reg_snapshot *gp)
 	}
 }
 
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
 {
 	struct thread_info *tp = current_thread_info();
 	struct pt_regs *regs = get_irq_regs();
@@ -255,15 +255,15 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
 
 	memset(global_cpu_snapshot, 0, sizeof(global_cpu_snapshot));
 
-	if (include_self)
+	if (cpumask_test_cpu(this_cpu, mask) && !exclude_self)
 		__global_reg_self(tp, regs, this_cpu);
 
 	smp_fetch_global_regs();
 
-	for_each_online_cpu(cpu) {
+	for_each_cpu(cpu, mask) {
 		struct global_reg_snapshot *gp;
 
-		if (!include_self && cpu == this_cpu)
+		if (exclude_self && cpu == this_cpu)
 			continue;
 
 		gp = &global_cpu_snapshot[cpu].reg;
@@ -300,7 +300,7 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
 
 static void sysrq_handle_globreg(int key)
 {
-	arch_trigger_all_cpu_backtrace(true);
+	trigger_all_cpu_backtrace();
 }
 
 static struct sysrq_key_op sparc_globalreg_op = {

arch/sparc/kernel/vmlinux.lds.S

@@ -49,6 +49,7 @@ SECTIONS
 		HEAD_TEXT
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		IRQENTRY_TEXT

arch/tile/Kconfig

@@ -3,7 +3,6 @@
 
 config TILE
 	def_bool y
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	select ARCH_WANT_FRAME_POINTERS

arch/tile/include/asm/irq.h

@@ -79,8 +79,9 @@ void tile_irq_activate(unsigned int irq, int tile_irq_type);
 void setup_irq_regs(void);
 
 #ifdef __tilegx__
-void arch_trigger_all_cpu_backtrace(bool self);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+				    bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 #endif
 
 #endif /* _ASM_TILE_IRQ_H */

arch/tile/kernel/entry.S

@@ -50,7 +50,7 @@ STD_ENTRY(smp_nap)
  * When interrupted at _cpu_idle_nap, we bump the PC forward 8, and
  * as a result return to the function that called _cpu_idle().
  */
-STD_ENTRY(_cpu_idle)
+STD_ENTRY_SECTION(_cpu_idle, .cpuidle.text)
 	movei r1, 1
 	IRQ_ENABLE_LOAD(r2, r3)
 	mtspr INTERRUPT_CRITICAL_SECTION, r1

arch/tile/kernel/pmc.c

@@ -16,7 +16,6 @@
 #include <linux/spinlock.h>
 #include <linux/module.h>
 #include <linux/atomic.h>
-#include <linux/interrupt.h>
 
 #include <asm/processor.h>
 #include <asm/pmc.h>
@@ -29,9 +28,7 @@ int handle_perf_interrupt(struct pt_regs *regs, int fault)
 	if (!perf_irq)
 		panic("Unexpected PERF_COUNT interrupt %d\n", fault);
 
-	nmi_enter();
 	retval = perf_irq(regs, fault);
-	nmi_exit();
 	return retval;
 }
 

arch/tile/kernel/process.c

@@ -22,7 +22,7 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/compat.h>
-#include <linux/hardirq.h>
+#include <linux/nmi.h>
 #include <linux/syscalls.h>
 #include <linux/kernel.h>
 #include <linux/tracehook.h>
@@ -594,66 +594,18 @@ void show_regs(struct pt_regs *regs)
 	tile_show_stack(&kbt);
 }
 
-/* To ensure stack dump on tiles occurs one by one. */
-static DEFINE_SPINLOCK(backtrace_lock);
-/* To ensure no backtrace occurs before all of the stack dump are done. */
-static atomic_t backtrace_cpus;
-/* The cpu mask to avoid reentrance. */
-static struct cpumask backtrace_mask;
-
-void do_nmi_dump_stack(struct pt_regs *regs)
-{
-	int is_idle = is_idle_task(current) && !in_interrupt();
-	int cpu;
-
-	nmi_enter();
-	cpu = smp_processor_id();
-	if (WARN_ON_ONCE(!cpumask_test_and_clear_cpu(cpu, &backtrace_mask)))
-		goto done;
-
-	spin_lock(&backtrace_lock);
-	if (is_idle)
-		pr_info("CPU: %d idle\n", cpu);
-	else
-		show_regs(regs);
-	spin_unlock(&backtrace_lock);
-	atomic_dec(&backtrace_cpus);
-done:
-	nmi_exit();
-}
-
 #ifdef __tilegx__
-void arch_trigger_all_cpu_backtrace(bool self)
+void nmi_raise_cpu_backtrace(struct cpumask *in_mask)
 {
 	struct cpumask mask;
 	HV_Coord tile;
 	unsigned int timeout;
 	int cpu;
-	int ongoing;
 	HV_NMI_Info info[NR_CPUS];
 
-	ongoing = atomic_cmpxchg(&backtrace_cpus, 0, num_online_cpus() - 1);
-	if (ongoing != 0) {
-		pr_err("Trying to do all-cpu backtrace.\n");
-		pr_err("But another all-cpu backtrace is ongoing (%d cpus left)\n",
-		       ongoing);
-		if (self) {
-			pr_err("Reporting the stack on this cpu only.\n");
-			dump_stack();
-		}
-		return;
-	}
-
-	cpumask_copy(&mask, cpu_online_mask);
-	cpumask_clear_cpu(smp_processor_id(), &mask);
-	cpumask_copy(&backtrace_mask, &mask);
-
-	/* Backtrace for myself first. */
-	if (self)
-		dump_stack();
-
 	/* Tentatively dump stack on remote tiles via NMI. */
 	timeout = 100;
+	cpumask_copy(&mask, in_mask);
 	while (!cpumask_empty(&mask) && timeout) {
 		for_each_cpu(cpu, &mask) {
 			tile.x = cpu_x(cpu);
@@ -664,12 +616,17 @@ void arch_trigger_all_cpu_backtrace(bool self)
 		}
 
 		mdelay(10);
+		touch_softlockup_watchdog();
 		timeout--;
 	}
 
-	/* Warn about cpus stuck in ICS and decrement their counts here. */
+	/* Warn about cpus stuck in ICS. */
 	if (!cpumask_empty(&mask)) {
 		for_each_cpu(cpu, &mask) {
+
+			/* Clear the bit as if nmi_cpu_backtrace() ran. */
+			cpumask_clear_cpu(cpu, in_mask);
+
 			switch (info[cpu].result) {
 			case HV_NMI_RESULT_FAIL_ICS:
 				pr_warn("Skipping stack dump of cpu %d in ICS at pc %#llx\n",
@@ -680,16 +637,20 @@ void arch_trigger_all_cpu_backtrace(bool self)
 					cpu);
 				break;
 			case HV_ENOSYS:
-				pr_warn("Hypervisor too old to allow remote stack dumps.\n");
-				goto skip_for_each;
+				WARN_ONCE(1, "Hypervisor too old to allow remote stack dumps.\n");
+				break;
 			default:  /* should not happen */
 				pr_warn("Skipping stack dump of cpu %d [%d,%#llx]\n",
 					cpu, info[cpu].result, info[cpu].pc);
 				break;
 			}
 		}
-skip_for_each:
-		atomic_sub(cpumask_weight(&mask), &backtrace_cpus);
 	}
 }
+
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
+{
+	nmi_trigger_cpumask_backtrace(mask, exclude_self,
+				      nmi_raise_cpu_backtrace);
+}
 #endif /* __tilegx_ */

arch/tile/kernel/traps.c

@@ -20,6 +20,8 @@
 #include <linux/reboot.h>
 #include <linux/uaccess.h>
 #include <linux/ptrace.h>
+#include <linux/hardirq.h>
+#include <linux/nmi.h>
 #include <asm/stack.h>
 #include <asm/traps.h>
 #include <asm/setup.h>
@@ -392,14 +394,17 @@ void __kprobes do_trap(struct pt_regs *regs, int fault_num,
 
 void do_nmi(struct pt_regs *regs, int fault_num, unsigned long reason)
 {
+	nmi_enter();
 	switch (reason) {
+#ifdef arch_trigger_cpumask_backtrace
 	case TILE_NMI_DUMP_STACK:
-		do_nmi_dump_stack(regs);
+		nmi_cpu_backtrace(regs);
 		break;
+#endif
 	default:
 		panic("Unexpected do_nmi type %ld", reason);
-		return;
 	}
+	nmi_exit();
 }
 
 /* Deprecated function currently only used here. */

arch/tile/kernel/vmlinux.lds.S

@@ -42,6 +42,7 @@ SECTIONS
   .text : AT (ADDR(.text) - LOAD_OFFSET) {
     HEAD_TEXT
     SCHED_TEXT
+    CPUIDLE_TEXT
     LOCK_TEXT
     KPROBES_TEXT
     IRQENTRY_TEXT

arch/um/kernel/dyn.lds.S

@@ -68,6 +68,7 @@ SECTIONS
     _stext = .;
     TEXT_TEXT
     SCHED_TEXT
+    CPUIDLE_TEXT
     LOCK_TEXT
     *(.fixup)
     *(.stub .text.* .gnu.linkonce.t.*)

arch/um/kernel/uml.lds.S

@@ -28,6 +28,7 @@ SECTIONS
     _stext = .;
     TEXT_TEXT
     SCHED_TEXT
+    CPUIDLE_TEXT
     LOCK_TEXT
     *(.fixup)
     /* .gnu.warning sections are handled specially by elf32.em.  */

arch/unicore32/kernel/vmlinux.lds.S

@@ -37,6 +37,7 @@ SECTIONS
 	.text : {		/* Real text segment */
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 
 		*(.fixup)

arch/x86/Kconfig

@@ -23,11 +23,11 @@ config X86
 	select ARCH_CLOCKSOURCE_DATA
 	select ARCH_DISCARD_MEMBLOCK
 	select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
-	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_FAST_MULTIPLIER
 	select ARCH_HAS_GCOV_PROFILE_ALL
+	select ARCH_HAS_GIGANTIC_PAGE		if X86_64
 	select ARCH_HAS_KCOV			if X86_64
 	select ARCH_HAS_PMEM_API		if X86_64
 	select ARCH_HAS_MMIO_FLUSH

arch/x86/include/asm/irq.h

@@ -50,8 +50,9 @@ extern int vector_used_by_percpu_irq(unsigned int vector);
 extern void init_ISA_irqs(void);
 
 #ifdef CONFIG_X86_LOCAL_APIC
-void arch_trigger_all_cpu_backtrace(bool);
-#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
+void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
+				    bool exclude_self);
+#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
 #endif
 
 #endif /* _ASM_X86_IRQ_H */

arch/x86/include/asm/irqflags.h

@@ -4,6 +4,10 @@
 #include <asm/processor-flags.h>
 
 #ifndef __ASSEMBLY__
+
+/* Provide __cpuidle; we can't safely include <linux/cpu.h> */
+#define __cpuidle __attribute__((__section__(".cpuidle.text")))
+
 /*
  * Interrupt control:
  */
@@ -44,12 +48,12 @@ static inline void native_irq_enable(void)
 	asm volatile("sti": : :"memory");
 }
 
-static inline void native_safe_halt(void)
+static inline __cpuidle void native_safe_halt(void)
 {
 	asm volatile("sti; hlt": : :"memory");
 }
 
-static inline void native_halt(void)
+static inline __cpuidle void native_halt(void)
 {
 	asm volatile("hlt": : :"memory");
 }
@@ -86,7 +90,7 @@ static inline notrace void arch_local_irq_enable(void)
  * Used in the idle loop; sti takes one instruction cycle
  * to complete:
  */
-static inline void arch_safe_halt(void)
+static inline __cpuidle void arch_safe_halt(void)
 {
 	native_safe_halt();
 }
@@ -95,7 +99,7 @@ static inline void arch_safe_halt(void)
  * Used when interrupts are already enabled or to
  * shutdown the processor:
  */
-static inline void halt(void)
+static inline __cpuidle void halt(void)
 {
 	native_halt();
 }

arch/x86/include/asm/pgtable_types.h

@@ -439,8 +439,6 @@ extern pgprot_t pgprot_writethrough(pgprot_t prot);
 struct file;
 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
                               unsigned long size, pgprot_t vma_prot);
-int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
-                              unsigned long size, pgprot_t *vma_prot);
 
 /* Install a pte for a particular vaddr in kernel space. */
 void set_pte_vaddr(unsigned long vaddr, pte_t pte);

arch/x86/kernel/acpi/cstate.c

@@ -152,7 +152,7 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
 }
 EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
 
-void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
+void __cpuidle acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
 {
 	unsigned int cpu = smp_processor_id();
 	struct cstate_entry *percpu_entry;

arch/x86/kernel/apic/hw_nmi.c

@@ -26,32 +26,32 @@ u64 hw_nmi_get_sample_period(int watchdog_thresh)
 }
 #endif
 
-#ifdef arch_trigger_all_cpu_backtrace
+#ifdef arch_trigger_cpumask_backtrace
 static void nmi_raise_cpu_backtrace(cpumask_t *mask)
 {
 	apic->send_IPI_mask(mask, NMI_VECTOR);
 }
 
-void arch_trigger_all_cpu_backtrace(bool include_self)
+void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
 {
-	nmi_trigger_all_cpu_backtrace(include_self, nmi_raise_cpu_backtrace);
+	nmi_trigger_cpumask_backtrace(mask, exclude_self,
+				      nmi_raise_cpu_backtrace);
 }
 
-static int
-arch_trigger_all_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs)
+static int nmi_cpu_backtrace_handler(unsigned int cmd, struct pt_regs *regs)
 {
 	if (nmi_cpu_backtrace(regs))
 		return NMI_HANDLED;
 
 	return NMI_DONE;
 }
-NOKPROBE_SYMBOL(arch_trigger_all_cpu_backtrace_handler);
+NOKPROBE_SYMBOL(nmi_cpu_backtrace_handler);
 
-static int __init register_trigger_all_cpu_backtrace(void)
+static int __init register_nmi_cpu_backtrace_handler(void)
 {
-	register_nmi_handler(NMI_LOCAL, arch_trigger_all_cpu_backtrace_handler,
+	register_nmi_handler(NMI_LOCAL, nmi_cpu_backtrace_handler,
 				0, "arch_bt");
 	return 0;
 }
-early_initcall(register_trigger_all_cpu_backtrace);
+early_initcall(register_nmi_cpu_backtrace_handler);
 #endif

arch/x86/kernel/process.c

@@ -302,7 +302,7 @@ void arch_cpu_idle(void)
 /*
  * We use this if we don't have any better idle routine..
  */
-void default_idle(void)
+void __cpuidle default_idle(void)
 {
 	trace_cpu_idle_rcuidle(1, smp_processor_id());
 	safe_halt();
@@ -417,7 +417,7 @@ static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c)
  * with interrupts enabled and no flags, which is backwards compatible with the
  * original MWAIT implementation.
  */
-static void mwait_idle(void)
+static __cpuidle void mwait_idle(void)
 {
 	if (!current_set_polling_and_test()) {
 		trace_cpu_idle_rcuidle(1, smp_processor_id());

arch/x86/kernel/vmlinux.lds.S

@@ -97,6 +97,7 @@ SECTIONS
 		_stext = .;
 		TEXT_TEXT
 		SCHED_TEXT
+		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
 		ENTRY_TEXT

arch/xtensa/kernel/vmlinux.lds.S

@@ -89,6 +89,9 @@ SECTIONS
     VMLINUX_SYMBOL(__sched_text_start) = .;
     *(.sched.literal .sched.text)
     VMLINUX_SYMBOL(__sched_text_end) = .;
+    VMLINUX_SYMBOL(__cpuidle_text_start) = .;
+    *(.cpuidle.literal .cpuidle.text)
+    VMLINUX_SYMBOL(__cpuidle_text_end) = .;
     VMLINUX_SYMBOL(__lock_text_start) = .;
     *(.spinlock.literal .spinlock.text)
     VMLINUX_SYMBOL(__lock_text_end) = .;

drivers/acpi/processor_idle.c

@@ -31,6 +31,7 @@
 #include <linux/sched.h>       /* need_resched() */
 #include <linux/tick.h>
 #include <linux/cpuidle.h>
+#include <linux/cpu.h>
 #include <acpi/processor.h>
 
 /*
@@ -115,7 +116,7 @@ static const struct dmi_system_id processor_power_dmi_table[] = {
  * Callers should disable interrupts before the call and enable
  * interrupts after return.
  */
-static void acpi_safe_halt(void)
+static void __cpuidle acpi_safe_halt(void)
 {
 	if (!tif_need_resched()) {
 		safe_halt();
@@ -645,7 +646,7 @@ static int acpi_idle_bm_check(void)
  *
  * Caller disables interrupt before call and enables interrupt after return.
  */
-static void acpi_idle_do_entry(struct acpi_processor_cx *cx)
+static void __cpuidle acpi_idle_do_entry(struct acpi_processor_cx *cx)
 {
 	if (cx->entry_method == ACPI_CSTATE_FFH) {
 		/* Call into architectural FFH based C-state */

drivers/base/memory.c

@@ -361,8 +361,11 @@ store_mem_state(struct device *dev,
 err:
 	unlock_device_hotplug();
 
-	if (ret)
+	if (ret < 0)
 		return ret;
+	if (ret)
+		return -EINVAL;
+
 	return count;
 }
 

drivers/cpuidle/driver.c

@@ -14,6 +14,7 @@
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/tick.h>
+#include <linux/cpu.h>
 
 #include "cpuidle.h"
 
@@ -178,8 +179,8 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv)
 }
 
 #ifdef CONFIG_ARCH_HAS_CPU_RELAX
-static int poll_idle(struct cpuidle_device *dev,
-		struct cpuidle_driver *drv, int index)
+static int __cpuidle poll_idle(struct cpuidle_device *dev,
+			       struct cpuidle_driver *drv, int index)
 {
 	local_irq_enable();
 	if (!current_set_polling_and_test()) {

drivers/idle/intel_idle.c

@@ -863,8 +863,8 @@ static struct cpuidle_state dnv_cstates[] = {
  *
  * Must be called under local_irq_disable().
  */
-static int intel_idle(struct cpuidle_device *dev,
-		struct cpuidle_driver *drv, int index)
+static __cpuidle int intel_idle(struct cpuidle_device *dev,
+				struct cpuidle_driver *drv, int index)
 {
 	unsigned long ecx = 1; /* break on interrupt flag */
 	struct cpuidle_state *state = &drv->states[index];

drivers/of/base.c

@@ -2077,6 +2077,8 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
 			name = of_get_property(of_aliases, "stdout", NULL);
 		if (name)
 			of_stdout = of_find_node_opts_by_path(name, &of_stdout_options);
+		if (of_stdout)
+			console_set_by_of();
 	}
 
 	if (!of_aliases)

drivers/staging/lustre/lustre/ptlrpc/sec.c

@@ -2220,7 +2220,7 @@ int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset)
 	task_lock(current);
 	if (pud->pud_ngroups > current_ngroups)
 		pud->pud_ngroups = current_ngroups;
-	memcpy(pud->pud_groups, current_cred()->group_info->blocks[0],
+	memcpy(pud->pud_groups, current_cred()->group_info->gid,
 	       pud->pud_ngroups * sizeof(__u32));
 	task_unlock(current);
 

fs/Kconfig

@@ -200,6 +200,9 @@ config HUGETLBFS
 config HUGETLB_PAGE
 	def_bool HUGETLBFS
 
+config ARCH_HAS_GIGANTIC_PAGE
+	bool
+
 source "fs/configfs/Kconfig"
 source "fs/efivarfs/Kconfig"
 

fs/dax.c

@@ -1036,7 +1036,7 @@ int dax_pmd_fault(struct vm_area_struct *vma, unsigned long address,
 	if (!write && !buffer_mapped(&bh)) {
 		spinlock_t *ptl;
 		pmd_t entry;
-		struct page *zero_page = get_huge_zero_page();
+		struct page *zero_page = mm_get_huge_zero_page(vma->vm_mm);
 
 		if (unlikely(!zero_page)) {
 			dax_pmd_dbg(&bh, address, "no zero page");

fs/ext2/file.c

@@ -234,6 +234,7 @@ const struct file_operations ext2_file_operations = {
 	.open		= dquot_file_open,
 	.release	= ext2_release_file,
 	.fsync		= ext2_fsync,
+	.get_unmapped_area = thp_get_unmapped_area,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= iter_file_splice_write,
 };

fs/ext4/file.c

@@ -697,6 +697,7 @@ const struct file_operations ext4_file_operations = {
 	.open		= ext4_file_open,
 	.release	= ext4_release_file,
 	.fsync		= ext4_sync_file,
+	.get_unmapped_area = thp_get_unmapped_area,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= iter_file_splice_write,
 	.fallocate	= ext4_fallocate,

fs/hugetlbfs/inode.c

@@ -416,7 +416,6 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart,
 
 		for (i = 0; i < pagevec_count(&pvec); ++i) {
 			struct page *page = pvec.pages[i];
-			bool rsv_on_error;
 			u32 hash;
 
 			/*
@@ -458,18 +457,17 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart,
 			 * cache (remove_huge_page) BEFORE removing the
 			 * region/reserve map (hugetlb_unreserve_pages).  In
 			 * rare out of memory conditions, removal of the
-			 * region/reserve map could fail.  Before free'ing
-			 * the page, note PagePrivate which is used in case
-			 * of error.
+			 * region/reserve map could fail. Correspondingly,
+			 * the subpool and global reserve usage count can need
+			 * to be adjusted.
 			 */
-			rsv_on_error = !PagePrivate(page);
+			VM_BUG_ON(PagePrivate(page));
 			remove_huge_page(page);
 			freed++;
 			if (!truncate_op) {
 				if (unlikely(hugetlb_unreserve_pages(inode,
 							next, next + 1, 1)))
-					hugetlb_fix_reserve_counts(inode,
-								rsv_on_error);
+					hugetlb_fix_reserve_counts(inode);
 			}
 
 			unlock_page(page);

fs/nfs/internal.h

@@ -679,11 +679,11 @@ unsigned int nfs_page_length(struct page *page)
 	loff_t i_size = i_size_read(page_file_mapping(page)->host);
 
 	if (i_size > 0) {
-		pgoff_t page_index = page_file_index(page);
+		pgoff_t index = page_index(page);
 		pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT;
-		if (page_index < end_index)
+		if (index < end_index)
 			return PAGE_SIZE;
-		if (page_index == end_index)
+		if (index == end_index)
 			return ((i_size - 1) & ~PAGE_MASK) + 1;
 	}
 	return 0;

fs/nfs/pagelist.c

@@ -342,7 +342,7 @@ nfs_create_request(struct nfs_open_context *ctx, struct page *page,
 	 * update_nfs_request below if the region is not locked. */
 	req->wb_page    = page;
 	if (page) {
-		req->wb_index = page_file_index(page);
+		req->wb_index = page_index(page);
 		get_page(page);
 	}
 	req->wb_offset  = offset;

fs/nfs/read.c

@@ -295,7 +295,7 @@ int nfs_readpage(struct file *file, struct page *page)
 	int		error;
 
 	dprintk("NFS: nfs_readpage (%p %ld@%lu)\n",
-		page, PAGE_SIZE, page_file_index(page));
+		page, PAGE_SIZE, page_index(page));
 	nfs_inc_stats(inode, NFSIOS_VFSREADPAGE);
 	nfs_add_stats(inode, NFSIOS_READPAGES, 1);
 

fs/nfs/write.c

@@ -151,7 +151,7 @@ static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int c
 	spin_lock(&inode->i_lock);
 	i_size = i_size_read(inode);
 	end_index = (i_size - 1) >> PAGE_SHIFT;
-	if (i_size > 0 && page_file_index(page) < end_index)
+	if (i_size > 0 && page_index(page) < end_index)
 		goto out;
 	end = page_file_offset(page) + ((loff_t)offset+count);
 	if (i_size >= end)
@@ -603,7 +603,7 @@ static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
 {
 	int ret;
 
-	nfs_pageio_cond_complete(pgio, page_file_index(page));
+	nfs_pageio_cond_complete(pgio, page_index(page));
 	ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE,
 				   launder);
 	if (ret == -EAGAIN) {

fs/nfsd/auth.c

@@ -55,10 +55,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
 			goto oom;
 
 		for (i = 0; i < rqgi->ngroups; i++) {
-			if (gid_eq(GLOBAL_ROOT_GID, GROUP_AT(rqgi, i)))
-				GROUP_AT(gi, i) = exp->ex_anon_gid;
+			if (gid_eq(GLOBAL_ROOT_GID, rqgi->gid[i]))
+				gi->gid[i] = exp->ex_anon_gid;
 			else
-				GROUP_AT(gi, i) = GROUP_AT(rqgi, i);
+				gi->gid[i] = rqgi->gid[i];
 		}
 	} else {
 		gi = get_group_info(rqgi);

fs/nfsd/nfs4state.c

@@ -1903,7 +1903,7 @@ static bool groups_equal(struct group_info *g1, struct group_info *g2)
 	if (g1->ngroups != g2->ngroups)
 		return false;
 	for (i=0; i<g1->ngroups; i++)
-		if (!gid_eq(GROUP_AT(g1, i), GROUP_AT(g2, i)))
+		if (!gid_eq(g1->gid[i], g2->gid[i]))
 			return false;
 	return true;
 }

fs/notify/fanotify/fanotify_user.c

@@ -49,12 +49,12 @@ struct kmem_cache *fanotify_perm_event_cachep __read_mostly;
  * enough to fit in "count". Return an error pointer if the count
  * is not large enough.
  *
- * Called with the group->notification_mutex held.
+ * Called with the group->notification_lock held.
  */
 static struct fsnotify_event *get_one_event(struct fsnotify_group *group,
 					    size_t count)
 {
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
+	assert_spin_locked(&group->notification_lock);
 
 	pr_debug("%s: group=%p count=%zd\n", __func__, group, count);
 
@@ -64,7 +64,7 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group,
 	if (FAN_EVENT_METADATA_LEN > count)
 		return ERR_PTR(-EINVAL);
 
-	/* held the notification_mutex the whole time, so this is the
+	/* held the notification_lock the whole time, so this is the
 	 * same event we peeked above */
 	return fsnotify_remove_first_event(group);
 }
@@ -147,7 +147,7 @@ static struct fanotify_perm_event_info *dequeue_event(
 {
 	struct fanotify_perm_event_info *event, *return_e = NULL;
 
-	spin_lock(&group->fanotify_data.access_lock);
+	spin_lock(&group->notification_lock);
 	list_for_each_entry(event, &group->fanotify_data.access_list,
 			    fae.fse.list) {
 		if (event->fd != fd)
@@ -157,7 +157,7 @@ static struct fanotify_perm_event_info *dequeue_event(
 		return_e = event;
 		break;
 	}
-	spin_unlock(&group->fanotify_data.access_lock);
+	spin_unlock(&group->notification_lock);
 
 	pr_debug("%s: found return_re=%p\n", __func__, return_e);
 
@@ -244,10 +244,10 @@ static unsigned int fanotify_poll(struct file *file, poll_table *wait)
 	int ret = 0;
 
 	poll_wait(file, &group->notification_waitq, wait);
-	mutex_lock(&group->notification_mutex);
+	spin_lock(&group->notification_lock);
 	if (!fsnotify_notify_queue_is_empty(group))
 		ret = POLLIN | POLLRDNORM;
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 
 	return ret;
 }
@@ -268,9 +268,9 @@ static ssize_t fanotify_read(struct file *file, char __user *buf,
 
 	add_wait_queue(&group->notification_waitq, &wait);
 	while (1) {
-		mutex_lock(&group->notification_mutex);
+		spin_lock(&group->notification_lock);
 		kevent = get_one_event(group, count);
-		mutex_unlock(&group->notification_mutex);
+		spin_unlock(&group->notification_lock);
 
 		if (IS_ERR(kevent)) {
 			ret = PTR_ERR(kevent);
@@ -309,10 +309,10 @@ static ssize_t fanotify_read(struct file *file, char __user *buf,
 				wake_up(&group->fanotify_data.access_waitq);
 				break;
 			}
-			spin_lock(&group->fanotify_data.access_lock);
+			spin_lock(&group->notification_lock);
 			list_add_tail(&kevent->list,
 				      &group->fanotify_data.access_list);
-			spin_unlock(&group->fanotify_data.access_lock);
+			spin_unlock(&group->notification_lock);
 #endif
 		}
 		buf += ret;
@@ -371,7 +371,7 @@ static int fanotify_release(struct inode *ignored, struct file *file)
 	 * Process all permission events on access_list and notification queue
 	 * and simulate reply from userspace.
 	 */
-	spin_lock(&group->fanotify_data.access_lock);
+	spin_lock(&group->notification_lock);
 	list_for_each_entry_safe(event, next, &group->fanotify_data.access_list,
 				 fae.fse.list) {
 		pr_debug("%s: found group=%p event=%p\n", __func__, group,
@@ -380,22 +380,22 @@ static int fanotify_release(struct inode *ignored, struct file *file)
 		list_del_init(&event->fae.fse.list);
 		event->response = FAN_ALLOW;
 	}
-	spin_unlock(&group->fanotify_data.access_lock);
 
 	/*
 	 * Destroy all non-permission events. For permission events just
 	 * dequeue them and set the response. They will be freed once the
 	 * response is consumed and fanotify_get_response() returns.
 	 */
-	mutex_lock(&group->notification_mutex);
 	while (!fsnotify_notify_queue_is_empty(group)) {
 		fsn_event = fsnotify_remove_first_event(group);
-		if (!(fsn_event->mask & FAN_ALL_PERM_EVENTS))
+		if (!(fsn_event->mask & FAN_ALL_PERM_EVENTS)) {
+			spin_unlock(&group->notification_lock);
 			fsnotify_destroy_event(group, fsn_event);
-		else
+			spin_lock(&group->notification_lock);
+		} else
 			FANOTIFY_PE(fsn_event)->response = FAN_ALLOW;
 	}
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 
 	/* Response for all permission events it set, wakeup waiters */
 	wake_up(&group->fanotify_data.access_waitq);
@@ -421,10 +421,10 @@ static long fanotify_ioctl(struct file *file, unsigned int cmd, unsigned long ar
 
 	switch (cmd) {
 	case FIONREAD:
-		mutex_lock(&group->notification_mutex);
+		spin_lock(&group->notification_lock);
 		list_for_each_entry(fsn_event, &group->notification_list, list)
 			send_len += FAN_EVENT_METADATA_LEN;
-		mutex_unlock(&group->notification_mutex);
+		spin_unlock(&group->notification_lock);
 		ret = put_user(send_len, (int __user *) p);
 		break;
 	}
@@ -765,7 +765,6 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags)
 		event_f_flags |= O_LARGEFILE;
 	group->fanotify_data.f_flags = event_f_flags;
 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
-	spin_lock_init(&group->fanotify_data.access_lock);
 	init_waitqueue_head(&group->fanotify_data.access_waitq);
 	INIT_LIST_HEAD(&group->fanotify_data.access_list);
 #endif

fs/notify/group.c

@@ -45,9 +45,9 @@ static void fsnotify_final_destroy_group(struct fsnotify_group *group)
  */
 void fsnotify_group_stop_queueing(struct fsnotify_group *group)
 {
-	mutex_lock(&group->notification_mutex);
+	spin_lock(&group->notification_lock);
 	group->shutdown = true;
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 }
 
 /*
@@ -125,7 +125,7 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
 	atomic_set(&group->refcnt, 1);
 	atomic_set(&group->num_marks, 0);
 
-	mutex_init(&group->notification_mutex);
+	spin_lock_init(&group->notification_lock);
 	INIT_LIST_HEAD(&group->notification_list);
 	init_waitqueue_head(&group->notification_waitq);
 	group->max_events = UINT_MAX;

fs/notify/inotify/inotify_user.c

@@ -115,10 +115,10 @@ static unsigned int inotify_poll(struct file *file, poll_table *wait)
 	int ret = 0;
 
 	poll_wait(file, &group->notification_waitq, wait);
-	mutex_lock(&group->notification_mutex);
+	spin_lock(&group->notification_lock);
 	if (!fsnotify_notify_queue_is_empty(group))
 		ret = POLLIN | POLLRDNORM;
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 
 	return ret;
 }
@@ -138,7 +138,7 @@ static int round_event_name_len(struct fsnotify_event *fsn_event)
  * enough to fit in "count". Return an error pointer if
  * not large enough.
  *
- * Called with the group->notification_mutex held.
+ * Called with the group->notification_lock held.
  */
 static struct fsnotify_event *get_one_event(struct fsnotify_group *group,
 					    size_t count)
@@ -157,7 +157,7 @@ static struct fsnotify_event *get_one_event(struct fsnotify_group *group,
 	if (event_size > count)
 		return ERR_PTR(-EINVAL);
 
-	/* held the notification_mutex the whole time, so this is the
+	/* held the notification_lock the whole time, so this is the
 	 * same event we peeked above */
 	fsnotify_remove_first_event(group);
 
@@ -234,9 +234,9 @@ static ssize_t inotify_read(struct file *file, char __user *buf,
 
 	add_wait_queue(&group->notification_waitq, &wait);
 	while (1) {
-		mutex_lock(&group->notification_mutex);
+		spin_lock(&group->notification_lock);
 		kevent = get_one_event(group, count);
-		mutex_unlock(&group->notification_mutex);
+		spin_unlock(&group->notification_lock);
 
 		pr_debug("%s: group=%p kevent=%p\n", __func__, group, kevent);
 
@@ -300,13 +300,13 @@ static long inotify_ioctl(struct file *file, unsigned int cmd,
 
 	switch (cmd) {
 	case FIONREAD:
-		mutex_lock(&group->notification_mutex);
+		spin_lock(&group->notification_lock);
 		list_for_each_entry(fsn_event, &group->notification_list,
 				    list) {
 			send_len += sizeof(struct inotify_event);
 			send_len += round_event_name_len(fsn_event);
 		}
-		mutex_unlock(&group->notification_mutex);
+		spin_unlock(&group->notification_lock);
 		ret = put_user(send_len, (int __user *) p);
 		break;
 	}

fs/notify/notification.c

@@ -63,7 +63,7 @@ EXPORT_SYMBOL_GPL(fsnotify_get_cookie);
 /* return true if the notify queue is empty, false otherwise */
 bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group)
 {
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
+	assert_spin_locked(&group->notification_lock);
 	return list_empty(&group->notification_list) ? true : false;
 }
 
@@ -73,8 +73,17 @@ void fsnotify_destroy_event(struct fsnotify_group *group,
 	/* Overflow events are per-group and we don't want to free them */
 	if (!event || event->mask == FS_Q_OVERFLOW)
 		return;
-	/* If the event is still queued, we have a problem... */
-	WARN_ON(!list_empty(&event->list));
+	/*
+	 * If the event is still queued, we have a problem... Do an unreliable
+	 * lockless check first to avoid locking in the common case. The
+	 * locking may be necessary for permission events which got removed
+	 * from the list by a different CPU than the one freeing the event.
+	 */
+	if (!list_empty(&event->list)) {
+		spin_lock(&group->notification_lock);
+		WARN_ON(!list_empty(&event->list));
+		spin_unlock(&group->notification_lock);
+	}
 	group->ops->free_event(event);
 }
 
@@ -95,10 +104,10 @@ int fsnotify_add_event(struct fsnotify_group *group,
 
 	pr_debug("%s: group=%p event=%p\n", __func__, group, event);
 
-	mutex_lock(&group->notification_mutex);
+	spin_lock(&group->notification_lock);
 
 	if (group->shutdown) {
-		mutex_unlock(&group->notification_mutex);
+		spin_unlock(&group->notification_lock);
 		return 2;
 	}
 
@@ -106,7 +115,7 @@ int fsnotify_add_event(struct fsnotify_group *group,
 		ret = 2;
 		/* Queue overflow event only if it isn't already queued */
 		if (!list_empty(&group->overflow_event->list)) {
-			mutex_unlock(&group->notification_mutex);
+			spin_unlock(&group->notification_lock);
 			return ret;
 		}
 		event = group->overflow_event;
@@ -116,7 +125,7 @@ int fsnotify_add_event(struct fsnotify_group *group,
 	if (!list_empty(list) && merge) {
 		ret = merge(list, event);
 		if (ret) {
-			mutex_unlock(&group->notification_mutex);
+			spin_unlock(&group->notification_lock);
 			return ret;
 		}
 	}
@@ -124,7 +133,7 @@ int fsnotify_add_event(struct fsnotify_group *group,
 queue:
 	group->q_len++;
 	list_add_tail(&event->list, list);
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 
 	wake_up(&group->notification_waitq);
 	kill_fasync(&group->fsn_fa, SIGIO, POLL_IN);
@@ -139,7 +148,7 @@ struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group)
 {
 	struct fsnotify_event *event;
 
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
+	assert_spin_locked(&group->notification_lock);
 
 	pr_debug("%s: group=%p\n", __func__, group);
 
@@ -161,7 +170,7 @@ struct fsnotify_event *fsnotify_remove_first_event(struct fsnotify_group *group)
  */
 struct fsnotify_event *fsnotify_peek_first_event(struct fsnotify_group *group)
 {
-	BUG_ON(!mutex_is_locked(&group->notification_mutex));
+	assert_spin_locked(&group->notification_lock);
 
 	return list_first_entry(&group->notification_list,
 				struct fsnotify_event, list);
@@ -175,12 +184,14 @@ void fsnotify_flush_notify(struct fsnotify_group *group)
 {
 	struct fsnotify_event *event;
 
-	mutex_lock(&group->notification_mutex);
+	spin_lock(&group->notification_lock);
 	while (!fsnotify_notify_queue_is_empty(group)) {
 		event = fsnotify_remove_first_event(group);
+		spin_unlock(&group->notification_lock);
 		fsnotify_destroy_event(group, event);
+		spin_lock(&group->notification_lock);
 	}
-	mutex_unlock(&group->notification_mutex);
+	spin_unlock(&group->notification_lock);
 }
 
 /*

fs/ocfs2/cluster/tcp.c

@@ -2104,7 +2104,7 @@ int o2net_start_listening(struct o2nm_node *node)
 	BUG_ON(o2net_listen_sock != NULL);
 
 	mlog(ML_KTHREAD, "starting o2net thread...\n");
-	o2net_wq = create_singlethread_workqueue("o2net");
+	o2net_wq = alloc_ordered_workqueue("o2net", WQ_MEM_RECLAIM);
 	if (o2net_wq == NULL) {
 		mlog(ML_ERROR, "unable to launch o2net thread\n");
 		return -ENOMEM; /* ? */

fs/ocfs2/dlm/dlmdomain.c

@@ -1904,7 +1904,7 @@ static int dlm_join_domain(struct dlm_ctxt *dlm)
 	}
 
 	snprintf(wq_name, O2NM_MAX_NAME_LEN, "dlm_wq-%s", dlm->name);
-	dlm->dlm_worker = create_singlethread_workqueue(wq_name);
+	dlm->dlm_worker = alloc_workqueue(wq_name, WQ_MEM_RECLAIM, 0);
 	if (!dlm->dlm_worker) {
 		status = -ENOMEM;
 		mlog_errno(status);

fs/ocfs2/dlmfs/dlmfs.c

@@ -646,7 +646,7 @@ static int __init init_dlmfs_fs(void)
 	}
 	cleanup_inode = 1;
 
-	user_dlm_worker = create_singlethread_workqueue("user_dlm");
+	user_dlm_worker = alloc_workqueue("user_dlm", WQ_MEM_RECLAIM, 0);
 	if (!user_dlm_worker) {
 		status = -ENOMEM;
 		goto bail;

fs/ocfs2/inode.h

@@ -123,8 +123,6 @@ static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode)
 #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL)
 #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL)
 
-extern struct kmem_cache *ocfs2_inode_cache;
-
 extern const struct address_space_operations ocfs2_aops;
 extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops;
 

fs/ocfs2/super.c

@@ -2329,7 +2329,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
 	}
 	cleancache_init_shared_fs(sb);
 
-	osb->ocfs2_wq = create_singlethread_workqueue("ocfs2_wq");
+	osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
 	if (!osb->ocfs2_wq) {
 		status = -ENOMEM;
 		mlog_errno(status);

fs/proc/array.c

@@ -186,51 +186,45 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
 	task_unlock(p);
 	rcu_read_unlock();
 
-	seq_printf(m,
-		"State:\t%s\n"
-		"Tgid:\t%d\n"
-		"Ngid:\t%d\n"
-		"Pid:\t%d\n"
-		"PPid:\t%d\n"
-		"TracerPid:\t%d\n"
-		"Uid:\t%d\t%d\t%d\t%d\n"
-		"Gid:\t%d\t%d\t%d\t%d\n"
-		"FDSize:\t%d\nGroups:\t",
-		get_task_state(p),
-		tgid, ngid, pid_nr_ns(pid, ns), ppid, tpid,
-		from_kuid_munged(user_ns, cred->uid),
-		from_kuid_munged(user_ns, cred->euid),
-		from_kuid_munged(user_ns, cred->suid),
-		from_kuid_munged(user_ns, cred->fsuid),
-		from_kgid_munged(user_ns, cred->gid),
-		from_kgid_munged(user_ns, cred->egid),
-		from_kgid_munged(user_ns, cred->sgid),
-		from_kgid_munged(user_ns, cred->fsgid),
-		max_fds);
-
+	seq_printf(m, "State:\t%s", get_task_state(p));
+
+	seq_put_decimal_ull(m, "\nTgid:\t", tgid);
+	seq_put_decimal_ull(m, "\nNgid:\t", ngid);
+	seq_put_decimal_ull(m, "\nPid:\t", pid_nr_ns(pid, ns));
+	seq_put_decimal_ull(m, "\nPPid:\t", ppid);
+	seq_put_decimal_ull(m, "\nTracerPid:\t", tpid);
+	seq_put_decimal_ull(m, "\nUid:\t", from_kuid_munged(user_ns, cred->uid));
+	seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->euid));
+	seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->suid));
+	seq_put_decimal_ull(m, "\t", from_kuid_munged(user_ns, cred->fsuid));
+	seq_put_decimal_ull(m, "\nGid:\t", from_kgid_munged(user_ns, cred->gid));
+	seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->egid));
+	seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->sgid));
+	seq_put_decimal_ull(m, "\t", from_kgid_munged(user_ns, cred->fsgid));
+	seq_put_decimal_ull(m, "\nFDSize:\t", max_fds);
+
+	seq_puts(m, "\nGroups:\t");
 	group_info = cred->group_info;
 	for (g = 0; g < group_info->ngroups; g++)
-		seq_printf(m, "%d ",
-			   from_kgid_munged(user_ns, GROUP_AT(group_info, g)));
+		seq_put_decimal_ull(m, g ? " " : "",
+				from_kgid_munged(user_ns, group_info->gid[g]));
 	put_cred(cred);
+	/* Trailing space shouldn't have been added in the first place. */
+	seq_putc(m, ' ');
 
 #ifdef CONFIG_PID_NS
 	seq_puts(m, "\nNStgid:");
 	for (g = ns->level; g <= pid->level; g++)
-		seq_printf(m, "\t%d",
-			task_tgid_nr_ns(p, pid->numbers[g].ns));
+		seq_put_decimal_ull(m, "\t", task_tgid_nr_ns(p, pid->numbers[g].ns));
 	seq_puts(m, "\nNSpid:");
 	for (g = ns->level; g <= pid->level; g++)
-		seq_printf(m, "\t%d",
-			task_pid_nr_ns(p, pid->numbers[g].ns));
+		seq_put_decimal_ull(m, "\t", task_pid_nr_ns(p, pid->numbers[g].ns));
 	seq_puts(m, "\nNSpgid:");
 	for (g = ns->level; g <= pid->level; g++)
-		seq_printf(m, "\t%d",
-			task_pgrp_nr_ns(p, pid->numbers[g].ns));
+		seq_put_decimal_ull(m, "\t", task_pgrp_nr_ns(p, pid->numbers[g].ns));
 	seq_puts(m, "\nNSsid:");
 	for (g = ns->level; g <= pid->level; g++)
-		seq_printf(m, "\t%d",
-			task_session_nr_ns(p, pid->numbers[g].ns));
+		seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns));
 #endif
 	seq_putc(m, '\n');
 }
@@ -299,11 +293,12 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
 		unlock_task_sighand(p, &flags);
 	}
 
-	seq_printf(m, "Threads:\t%d\n", num_threads);
-	seq_printf(m, "SigQ:\t%lu/%lu\n", qsize, qlim);
+	seq_put_decimal_ull(m, "Threads:\t", num_threads);
+	seq_put_decimal_ull(m, "\nSigQ:\t", qsize);
+	seq_put_decimal_ull(m, "/", qlim);
 
 	/* render them all */
-	render_sigset_t(m, "SigPnd:\t", &pending);
+	render_sigset_t(m, "\nSigPnd:\t", &pending);
 	render_sigset_t(m, "ShdPnd:\t", &shpending);
 	render_sigset_t(m, "SigBlk:\t", &blocked);
 	render_sigset_t(m, "SigIgn:\t", &ignored);
@@ -348,17 +343,17 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p)
 static inline void task_seccomp(struct seq_file *m, struct task_struct *p)
 {
 #ifdef CONFIG_SECCOMP
-	seq_printf(m, "Seccomp:\t%d\n", p->seccomp.mode);
+	seq_put_decimal_ull(m, "Seccomp:\t", p->seccomp.mode);
+	seq_putc(m, '\n');
 #endif
 }
 
 static inline void task_context_switch_counts(struct seq_file *m,
 						struct task_struct *p)
 {
-	seq_printf(m,	"voluntary_ctxt_switches:\t%lu\n"
-			"nonvoluntary_ctxt_switches:\t%lu\n",
-			p->nvcsw,
-			p->nivcsw);
+	seq_put_decimal_ull(m, "voluntary_ctxt_switches:\t", p->nvcsw);
+	seq_put_decimal_ull(m, "\nnonvoluntary_ctxt_switches:\t", p->nivcsw);
+	seq_putc(m, '\n');
 }
 
 static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
@@ -490,41 +485,41 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 	start_time = nsec_to_clock_t(task->real_start_time);
 
 	seq_printf(m, "%d (%s) %c", pid_nr_ns(pid, ns), tcomm, state);
-	seq_put_decimal_ll(m, ' ', ppid);
-	seq_put_decimal_ll(m, ' ', pgid);
-	seq_put_decimal_ll(m, ' ', sid);
-	seq_put_decimal_ll(m, ' ', tty_nr);
-	seq_put_decimal_ll(m, ' ', tty_pgrp);
-	seq_put_decimal_ull(m, ' ', task->flags);
-	seq_put_decimal_ull(m, ' ', min_flt);
-	seq_put_decimal_ull(m, ' ', cmin_flt);
-	seq_put_decimal_ull(m, ' ', maj_flt);
-	seq_put_decimal_ull(m, ' ', cmaj_flt);
-	seq_put_decimal_ull(m, ' ', cputime_to_clock_t(utime));
-	seq_put_decimal_ull(m, ' ', cputime_to_clock_t(stime));
-	seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cutime));
-	seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cstime));
-	seq_put_decimal_ll(m, ' ', priority);
-	seq_put_decimal_ll(m, ' ', nice);
-	seq_put_decimal_ll(m, ' ', num_threads);
-	seq_put_decimal_ull(m, ' ', 0);
-	seq_put_decimal_ull(m, ' ', start_time);
-	seq_put_decimal_ull(m, ' ', vsize);
-	seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0);
-	seq_put_decimal_ull(m, ' ', rsslim);
-	seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0);
-	seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0);
-	seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0);
-	seq_put_decimal_ull(m, ' ', esp);
-	seq_put_decimal_ull(m, ' ', eip);
+	seq_put_decimal_ll(m, " ", ppid);
+	seq_put_decimal_ll(m, " ", pgid);
+	seq_put_decimal_ll(m, " ", sid);
+	seq_put_decimal_ll(m, " ", tty_nr);
+	seq_put_decimal_ll(m, " ", tty_pgrp);
+	seq_put_decimal_ull(m, " ", task->flags);
+	seq_put_decimal_ull(m, " ", min_flt);
+	seq_put_decimal_ull(m, " ", cmin_flt);
+	seq_put_decimal_ull(m, " ", maj_flt);
+	seq_put_decimal_ull(m, " ", cmaj_flt);
+	seq_put_decimal_ull(m, " ", cputime_to_clock_t(utime));
+	seq_put_decimal_ull(m, " ", cputime_to_clock_t(stime));
+	seq_put_decimal_ll(m, " ", cputime_to_clock_t(cutime));
+	seq_put_decimal_ll(m, " ", cputime_to_clock_t(cstime));
+	seq_put_decimal_ll(m, " ", priority);
+	seq_put_decimal_ll(m, " ", nice);
+	seq_put_decimal_ll(m, " ", num_threads);
+	seq_put_decimal_ull(m, " ", 0);
+	seq_put_decimal_ull(m, " ", start_time);
+	seq_put_decimal_ull(m, " ", vsize);
+	seq_put_decimal_ull(m, " ", mm ? get_mm_rss(mm) : 0);
+	seq_put_decimal_ull(m, " ", rsslim);
+	seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->start_code : 1) : 0);
+	seq_put_decimal_ull(m, " ", mm ? (permitted ? mm->end_code : 1) : 0);
+	seq_put_decimal_ull(m, " ", (permitted && mm) ? mm->start_stack : 0);
+	seq_put_decimal_ull(m, " ", esp);
+	seq_put_decimal_ull(m, " ", eip);
 	/* The signal information here is obsolete.
 	 * It must be decimal for Linux 2.0 compatibility.
 	 * Use /proc/#/status for real-time signals.
 	 */
-	seq_put_decimal_ull(m, ' ', task->pending.signal.sig[0] & 0x7fffffffUL);
-	seq_put_decimal_ull(m, ' ', task->blocked.sig[0] & 0x7fffffffUL);
-	seq_put_decimal_ull(m, ' ', sigign.sig[0] & 0x7fffffffUL);
-	seq_put_decimal_ull(m, ' ', sigcatch.sig[0] & 0x7fffffffUL);
+	seq_put_decimal_ull(m, " ", task->pending.signal.sig[0] & 0x7fffffffUL);
+	seq_put_decimal_ull(m, " ", task->blocked.sig[0] & 0x7fffffffUL);
+	seq_put_decimal_ull(m, " ", sigign.sig[0] & 0x7fffffffUL);
+	seq_put_decimal_ull(m, " ", sigcatch.sig[0] & 0x7fffffffUL);
 
 	/*
 	 * We used to output the absolute kernel address, but that's an
@@ -538,31 +533,31 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 	else
 		seq_puts(m, " 0");
 
-	seq_put_decimal_ull(m, ' ', 0);
-	seq_put_decimal_ull(m, ' ', 0);
-	seq_put_decimal_ll(m, ' ', task->exit_signal);
-	seq_put_decimal_ll(m, ' ', task_cpu(task));
-	seq_put_decimal_ull(m, ' ', task->rt_priority);
-	seq_put_decimal_ull(m, ' ', task->policy);
-	seq_put_decimal_ull(m, ' ', delayacct_blkio_ticks(task));
-	seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime));
-	seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime));
+	seq_put_decimal_ull(m, " ", 0);
+	seq_put_decimal_ull(m, " ", 0);
+	seq_put_decimal_ll(m, " ", task->exit_signal);
+	seq_put_decimal_ll(m, " ", task_cpu(task));
+	seq_put_decimal_ull(m, " ", task->rt_priority);
+	seq_put_decimal_ull(m, " ", task->policy);
+	seq_put_decimal_ull(m, " ", delayacct_blkio_ticks(task));
+	seq_put_decimal_ull(m, " ", cputime_to_clock_t(gtime));
+	seq_put_decimal_ll(m, " ", cputime_to_clock_t(cgtime));
 
 	if (mm && permitted) {
-		seq_put_decimal_ull(m, ' ', mm->start_data);
-		seq_put_decimal_ull(m, ' ', mm->end_data);
-		seq_put_decimal_ull(m, ' ', mm->start_brk);
-		seq_put_decimal_ull(m, ' ', mm->arg_start);
-		seq_put_decimal_ull(m, ' ', mm->arg_end);
-		seq_put_decimal_ull(m, ' ', mm->env_start);
-		seq_put_decimal_ull(m, ' ', mm->env_end);
+		seq_put_decimal_ull(m, " ", mm->start_data);
+		seq_put_decimal_ull(m, " ", mm->end_data);
+		seq_put_decimal_ull(m, " ", mm->start_brk);
+		seq_put_decimal_ull(m, " ", mm->arg_start);
+		seq_put_decimal_ull(m, " ", mm->arg_end);
+		seq_put_decimal_ull(m, " ", mm->env_start);
+		seq_put_decimal_ull(m, " ", mm->env_end);
 	} else
-		seq_printf(m, " 0 0 0 0 0 0 0");
+		seq_puts(m, " 0 0 0 0 0 0 0");
 
 	if (permitted)
-		seq_put_decimal_ll(m, ' ', task->exit_code);
+		seq_put_decimal_ll(m, " ", task->exit_code);
 	else
-		seq_put_decimal_ll(m, ' ', 0);
+		seq_puts(m, " 0");
 
 	seq_putc(m, '\n');
 	if (mm)
@@ -598,13 +593,13 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
 	 * seq_printf(m, "%lu %lu %lu %lu 0 %lu 0\n",
 	 *               size, resident, shared, text, data);
 	 */
-	seq_put_decimal_ull(m, 0, size);
-	seq_put_decimal_ull(m, ' ', resident);
-	seq_put_decimal_ull(m, ' ', shared);
-	seq_put_decimal_ull(m, ' ', text);
-	seq_put_decimal_ull(m, ' ', 0);
-	seq_put_decimal_ull(m, ' ', data);
-	seq_put_decimal_ull(m, ' ', 0);
+	seq_put_decimal_ull(m, "", size);
+	seq_put_decimal_ull(m, " ", resident);
+	seq_put_decimal_ull(m, " ", shared);
+	seq_put_decimal_ull(m, " ", text);
+	seq_put_decimal_ull(m, " ", 0);
+	seq_put_decimal_ull(m, " ", data);
+	seq_put_decimal_ull(m, " ", 0);
 	seq_putc(m, '\n');
 
 	return 0;