Merge commit 'v2.6.28-rc8' into sched/core

Documentation/DMA-API.txt

@@ -316,12 +316,10 @@ reduce current DMA mapping usage or delay and try again later).
 	pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
 		int nents, int direction)
 
-Maps a scatter gather list from the block layer.
-
 Returns: the number of physical segments mapped (this may be shorter
-than <nents> passed in if the block layer determines that some
-elements of the scatter/gather list are physically adjacent and thus
-may be mapped with a single entry).
+than <nents> passed in if some elements of the scatter/gather list are
+physically or virtually adjacent and an IOMMU maps them with a single
+entry).
 
 Please note that the sg cannot be mapped again if it has been mapped once.
 The mapping process is allowed to destroy information in the sg.

Documentation/filesystems/ocfs2.txt

@@ -28,10 +28,7 @@ Manish Singh  <manish.singh@oracle.com>
 Caveats
 =======
 Features which OCFS2 does not support yet:
-	- extended attributes
 	- quotas
-	- cluster aware flock
-	- cluster aware lockf
 	- Directory change notification (F_NOTIFY)
 	- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
 	- POSIX ACLs

Documentation/filesystems/proc.txt

@@ -44,6 +44,7 @@ Table of Contents
   2.14	/proc/<pid>/io - Display the IO accounting fields
   2.15	/proc/<pid>/coredump_filter - Core dump filtering settings
   2.16	/proc/<pid>/mountinfo - Information about mounts
+  2.17	/proc/sys/fs/epoll - Configuration options for the epoll interface
 
 ------------------------------------------------------------------------------
 Preface
@@ -2483,4 +2484,30 @@ For more information on mount propagation see:
 
   Documentation/filesystems/sharedsubtree.txt
 
+2.17	/proc/sys/fs/epoll - Configuration options for the epoll interface
+--------------------------------------------------------
+
+This directory contains configuration options for the epoll(7) interface.
+
+max_user_instances
+------------------
+
+This is the maximum number of epoll file descriptors that a single user can
+have open at a given time. The default value is 128, and should be enough
+for normal users.
+
+max_user_watches
+----------------
+
+Every epoll file descriptor can store a number of files to be monitored
+for event readiness. Each one of these monitored files constitutes a "watch".
+This configuration option sets the maximum number of "watches" that are
+allowed for each user.
+Each "watch" costs roughly 90 bytes on a 32bit kernel, and roughly 160 bytes
+on a 64bit one.
+The current default value for  max_user_watches  is the 1/32 of the available
+low memory, divided for the "watch" cost in bytes.
+
+
 ------------------------------------------------------------------------------
+

Documentation/local_ops.txt

@@ -149,7 +149,7 @@ static void do_test_timer(unsigned long data)
 	int cpu;
 
 	/* Increment the counters */
-	on_each_cpu(test_each, NULL, 0, 1);
+	on_each_cpu(test_each, NULL, 1);
 	/* Read all the counters */
 	printk("Counters read from CPU %d\n", smp_processor_id());
 	for_each_online_cpu(cpu) {

Documentation/spi/spi-summary

@@ -215,7 +215,7 @@ So for example arch/.../mach-*/board-*.c files might have code like:
 	/* if your mach-* infrastructure doesn't support kernels that can
 	 * run on multiple boards, pdata wouldn't benefit from "__init".
 	 */
-	static struct mysoc_spi_data __init pdata = { ... };
+	static struct mysoc_spi_data __initdata pdata = { ... };
 
 	static __init board_init(void)
 	{

MAINTAINERS

@@ -779,6 +779,7 @@ ATM
 P:	Chas Williams
 M:	chas@cmf.nrl.navy.mil
 L:	linux-atm-general@lists.sourceforge.net (subscribers-only)
+L:	netdev@vger.kernel.org
 W:	http://linux-atm.sourceforge.net
 S:	Maintained
 
@@ -3758,6 +3759,15 @@ M:	drzeus-sdhci@drzeus.cx
 L:	sdhci-devel@list.drzeus.cx
 S:	Maintained
 
+SECURITY SUBSYSTEM
+F:	security/
+P:	James Morris
+M:	jmorris@namei.org
+L:	linux-kernel@vger.kernel.org
+L:	linux-security-module@vger.kernel.org (suggested Cc:)
+T:	git kernel.org:pub/scm/linux/kernel/git/jmorris/security-testing-2.6.git
+S:	Supported
+
 SECURITY CONTACT
 P:	Security Officers
 M:	security@kernel.org
@@ -4235,7 +4245,7 @@ M:	dedekind@infradead.org
 P:	Adrian Hunter
 M:	ext-adrian.hunter@nokia.com
 L:	linux-mtd@lists.infradead.org
-T:	git git://git.infradead.org/~dedekind/ubifs-2.6.git
+T:	git git://git.infradead.org/ubifs-2.6.git
 W:	http://www.linux-mtd.infradead.org/doc/ubifs.html
 S:	Maintained
 
@@ -4289,7 +4299,7 @@ P:	Artem Bityutskiy
 M:	dedekind@infradead.org
 W:	http://www.linux-mtd.infradead.org/
 L:	linux-mtd@lists.infradead.org
-T:	git git://git.infradead.org/~dedekind/ubi-2.6.git
+T:	git git://git.infradead.org/ubi-2.6.git
 S:	Maintained
 
 USB ACM DRIVER

Makefile

@@ -1,8 +1,8 @@
 VERSION = 2
 PATCHLEVEL = 6
 SUBLEVEL = 28
-EXTRAVERSION = -rc6
-NAME = Killer Bat of Doom
+EXTRAVERSION = -rc8
+NAME = Erotic Pickled Herring
 
 # *DOCUMENTATION*
 # To see a list of typical targets execute "make help"

arch/arm/include/asm/bitops.h

@@ -237,6 +237,7 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset);
 #if __LINUX_ARM_ARCH__ < 5
 
 #include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/__fls.h>
 #include <asm-generic/bitops/__ffs.h>
 #include <asm-generic/bitops/fls.h>
 #include <asm-generic/bitops/ffs.h>
@@ -277,16 +278,19 @@ static inline int constant_fls(int x)
  * the clz instruction for much better code efficiency.
  */
 
-#define __fls(x) \
-	( __builtin_constant_p(x) ? constant_fls(x) : \
-	  ({ int __r; asm("clz\t%0, %1" : "=r"(__r) : "r"(x) : "cc"); 32-__r; }) )
-
-/* Implement fls() in C so that 64-bit args are suitably truncated */
 static inline int fls(int x)
 {
-	return __fls(x);
+	int ret;
+
+	if (__builtin_constant_p(x))
+	       return constant_fls(x);
+
+	asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc");
+       	ret = 32 - ret;
+	return ret;
 }
 
+#define __fls(x) (fls(x) - 1)
 #define ffs(x) ({ unsigned long __t = (x); fls(__t & -__t); })
 #define __ffs(x) (ffs(x) - 1)
 #define ffz(x) __ffs( ~(x) )

arch/arm/include/asm/processor.h

@@ -23,7 +23,7 @@
 #include <asm/types.h>
 
 #ifdef __KERNEL__
-#define STACK_TOP	((current->personality == PER_LINUX_32BIT) ? \
+#define STACK_TOP	((current->personality & ADDR_LIMIT_32BIT) ? \
 			 TASK_SIZE : TASK_SIZE_26)
 #define STACK_TOP_MAX	TASK_SIZE
 #endif

arch/arm/mach-omap1/io.c

@@ -128,7 +128,7 @@ void __init omap1_map_common_io(void)
  * Common low-level hardware init for omap1. This should only get called from
  * board specific init.
  */
-void __init omap1_init_common_hw()
+void __init omap1_init_common_hw(void)
 {
 	/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
 	 * on a Posted Write in the TIPB Bridge".

arch/arm/mach-s3c2410/include/mach/spi-gpio.h

@@ -18,6 +18,7 @@ struct s3c2410_spigpio_info {
 	unsigned long		 pin_mosi;
 	unsigned long		 pin_miso;
 
+	int			 num_chipselect;
 	int			 bus_num;
 
 	void (*chip_select)(struct s3c2410_spigpio_info *spi, int cs);

arch/arm/mm/alignment.c

@@ -70,6 +70,10 @@ static unsigned long ai_dword;
 static unsigned long ai_multi;
 static int ai_usermode;
 
+#define UM_WARN		(1 << 0)
+#define UM_FIXUP	(1 << 1)
+#define UM_SIGNAL	(1 << 2)
+
 #ifdef CONFIG_PROC_FS
 static const char *usermode_action[] = {
 	"ignored",
@@ -754,7 +758,7 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
  user:
 	ai_user += 1;
 
-	if (ai_usermode & 1)
+	if (ai_usermode & UM_WARN)
 		printk("Alignment trap: %s (%d) PC=0x%08lx Instr=0x%0*lx "
 		       "Address=0x%08lx FSR 0x%03x\n", current->comm,
 			task_pid_nr(current), instrptr,
@@ -762,10 +766,10 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 		        thumb_mode(regs) ? tinstr : instr,
 		        addr, fsr);
 
-	if (ai_usermode & 2)
+	if (ai_usermode & UM_FIXUP)
 		goto fixup;
 
-	if (ai_usermode & 4)
+	if (ai_usermode & UM_SIGNAL)
 		force_sig(SIGBUS, current);
 	else
 		set_cr(cr_no_alignment);
@@ -796,6 +800,22 @@ static int __init alignment_init(void)
 	res->write_proc = proc_alignment_write;
 #endif
 
+	/*
+	 * ARMv6 and later CPUs can perform unaligned accesses for
+	 * most single load and store instructions up to word size.
+	 * LDM, STM, LDRD and STRD still need to be handled.
+	 *
+	 * Ignoring the alignment fault is not an option on these
+	 * CPUs since we spin re-faulting the instruction without
+	 * making any progress.
+	 */
+	if (cpu_architecture() >= CPU_ARCH_ARMv6 && (cr_alignment & CR_U)) {
+		cr_alignment &= ~CR_A;
+		cr_no_alignment &= ~CR_A;
+		set_cr(cr_alignment);
+		ai_usermode = UM_FIXUP;
+	}
+
 	hook_fault_code(1, do_alignment, SIGILL, "alignment exception");
 	hook_fault_code(3, do_alignment, SIGILL, "alignment exception");
 

arch/arm/plat-omap/include/mach/omapfb.h

@@ -353,8 +353,8 @@ struct omapfb_device {
 	u32			pseudo_palette[17];
 
 	struct lcd_panel	*panel;			/* LCD panel */
-	struct lcd_ctrl         *ctrl;			/* LCD controller */
-	struct lcd_ctrl		*int_ctrl;		/* internal LCD ctrl */
+	const struct lcd_ctrl	*ctrl;			/* LCD controller */
+	const struct lcd_ctrl	*int_ctrl;		/* internal LCD ctrl */
 	struct lcd_ctrl_extif	*ext_if;		/* LCD ctrl external
 							   interface */
 	struct device		*dev;

arch/arm/plat-omap/sram.c

@@ -255,7 +255,7 @@ void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
 	if (!_omap_sram_reprogram_clock)
 		omap_sram_error();
 
-	return _omap_sram_reprogram_clock(dpllctl, ckctl);
+	_omap_sram_reprogram_clock(dpllctl, ckctl);
 }
 
 int __init omap1_sram_init(void)
@@ -282,7 +282,7 @@ void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
 	if (!_omap2_sram_ddr_init)
 		omap_sram_error();
 
-	return _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
+	_omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
 			     base_cs, force_unlock);
 }
 
@@ -294,7 +294,7 @@ void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val, u32 mem_type)
 	if (!_omap2_sram_reprogram_sdrc)
 		omap_sram_error();
 
-	return _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
+	_omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
 }
 
 static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);

arch/arm/plat-orion/pcie.c

@@ -35,7 +35,7 @@
 #define  PCIE_CONF_REG(r)		((((r) & 0xf00) << 16) | ((r) & 0xfc))
 #define  PCIE_CONF_BUS(b)		(((b) & 0xff) << 16)
 #define  PCIE_CONF_DEV(d)		(((d) & 0x1f) << 11)
-#define  PCIE_CONF_FUNC(f)		(((f) & 0x3) << 8)
+#define  PCIE_CONF_FUNC(f)		(((f) & 0x7) << 8)
 #define PCIE_CONF_DATA_OFF	0x18fc
 #define PCIE_MASK_OFF		0x1910
 #define PCIE_CTRL_OFF		0x1a00

arch/frv/kernel/sys_frv.c

@@ -35,13 +35,6 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 	int error = -EBADF;
 	struct file * file = NULL;
 
-	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
-	if (!(flags & MAP_ANONYMOUS)) {
-		file = fget(fd);
-		if (!file)
-			goto out;
-	}
-
 	/* As with sparc32, make sure the shift for mmap2 is constant
 	   (12), no matter what PAGE_SIZE we have.... */
 
@@ -49,8 +42,14 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 	   trying to map something we can't */
 	if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
 		return -EINVAL;
+	pgoff >>= PAGE_SHIFT - 12;
 
-	pgoff >>= (PAGE_SHIFT - 12);
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+	if (!(flags & MAP_ANONYMOUS)) {
+		file = fget(fd);
+		if (!file)
+			goto out;
+	}
 
 	down_write(&current->mm->mmap_sem);
 	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);

arch/ia64/include/asm/paravirt_privop.h

@@ -83,7 +83,6 @@ extern unsigned long ia64_native_getreg_func(int regnum);
 #define paravirt_getreg(reg)					\
 	({							\
 		unsigned long res;				\
-		BUILD_BUG_ON(!__builtin_constant_p(reg));	\
 		if ((reg) == _IA64_REG_IP)			\
 			res = ia64_native_getreg(_IA64_REG_IP); \
 		else						\

arch/ia64/kernel/topology.c

@@ -53,10 +53,12 @@ int __ref arch_register_cpu(int num)
 }
 EXPORT_SYMBOL(arch_register_cpu);
 
-void arch_unregister_cpu(int num)
+void __ref arch_unregister_cpu(int num)
 {
 	unregister_cpu(&sysfs_cpus[num].cpu);
+#ifdef CONFIG_ACPI
 	unmap_cpu_from_node(num, cpu_to_node(num));
+#endif
 }
 EXPORT_SYMBOL(arch_unregister_cpu);
 #else

arch/ia64/kvm/Makefile

@@ -58,7 +58,7 @@ endif
 kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
 obj-$(CONFIG_KVM) += kvm.o
 
-EXTRA_CFLAGS_vcpu.o += -mfixed-range=f2-f5,f12-f127
+CFLAGS_vcpu.o += -mfixed-range=f2-f5,f12-f127
 kvm-intel-objs = vmm.o vmm_ivt.o trampoline.o vcpu.o optvfault.o mmio.o \
 	vtlb.o process.o
 #Add link memcpy and memset to avoid possible structure assignment error