Merge branch 'upstream-fixes'

54 files changed, 310 insertions, 178 deletions

diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt
index 990998ee10b6..30c41459953c 100644
--- a/Documentation/cpusets.txt
+++ b/Documentation/cpusets.txt
@@ -4,8 +4,9 @@
 Copyright (C) 2004 BULL SA.
 Written by Simon.Derr@bull.net
 
-Portions Copyright (c) 2004 Silicon Graphics, Inc.
+Portions Copyright (c) 2004-2006 Silicon Graphics, Inc.
 Modified by Paul Jackson <pj@sgi.com>
+Modified by Christoph Lameter <clameter@sgi.com>
 
 CONTENTS:
 =========
@@ -90,7 +91,8 @@ This can be especially valuable on:
 
 These subsets, or "soft partitions" must be able to be dynamically
 adjusted, as the job mix changes, without impacting other concurrently
-executing jobs.
+executing jobs. The location of the running jobs pages may also be moved
+when the memory locations are changed.
 
 The kernel cpuset patch provides the minimum essential kernel
 mechanisms required to efficiently implement such subsets.  It
@@ -102,8 +104,8 @@ memory allocator code.
 1.3 How are cpusets implemented ?
 ---------------------------------
 
-Cpusets provide a Linux kernel (2.6.7 and above) mechanism to constrain
-which CPUs and Memory Nodes are used by a process or set of processes.
+Cpusets provide a Linux kernel mechanism to constrain which CPUs and
+Memory Nodes are used by a process or set of processes.
 
 The Linux kernel already has a pair of mechanisms to specify on which
 CPUs a task may be scheduled (sched_setaffinity) and on which Memory
@@ -371,22 +373,17 @@ cpusets memory placement policy 'mems' subsequently changes.
 If the cpuset flag file 'memory_migrate' is set true, then when
 tasks are attached to that cpuset, any pages that task had
 allocated to it on nodes in its previous cpuset are migrated
-to the tasks new cpuset.  Depending on the implementation,
-this migration may either be done by swapping the page out,
-so that the next time the page is referenced, it will be paged
-into the tasks new cpuset, usually on the node where it was
-referenced, or this migration may be done by directly copying
-the pages from the tasks previous cpuset to the new cpuset,
-where possible to the same node, relative to the new cpuset,
-as the node that held the page, relative to the old cpuset.
+to the tasks new cpuset. The relative placement of the page within
+the cpuset is preserved during these migration operations if possible.
+For example if the page was on the second valid node of the prior cpuset
+then the page will be placed on the second valid node of the new cpuset.
+
 Also if 'memory_migrate' is set true, then if that cpusets
 'mems' file is modified, pages allocated to tasks in that
 cpuset, that were on nodes in the previous setting of 'mems',
-will be moved to nodes in the new setting of 'mems.'  Again,
-depending on the implementation, this might be done by swapping,
-or by direct copying.  In either case, pages that were not in
-the tasks prior cpuset, or in the cpusets prior 'mems' setting,
-will not be moved.
+will be moved to nodes in the new setting of 'mems.'
+Pages that were not in the tasks prior cpuset, or in the cpusets
+prior 'mems' setting, will not be moved.
 
 There is an exception to the above.  If hotplug functionality is used
 to remove all the CPUs that are currently assigned to a cpuset,
@@ -434,16 +431,6 @@ and then start a subshell 'sh' in that cpuset:
   # The next line should display '/Charlie'
   cat /proc/self/cpuset
 
-In the case that a change of cpuset includes wanting to move already
-allocated memory pages, consider further the work of IWAMOTO
-Toshihiro <iwamoto@valinux.co.jp> for page remapping and memory
-hotremoval, which can be found at:
-
-  http://people.valinux.co.jp/~iwamoto/mh.html
-
-The integration of cpusets with such memory migration is not yet
-available.
-
 In the future, a C library interface to cpusets will likely be
 available.  For now, the only way to query or modify cpusets is
 via the cpuset file system, using the various cd, mkdir, echo, cat,
diff --git a/Documentation/vm/page_migration b/Documentation/vm/page_migration
index c52820fcf500..0dd4ef30c361 100644
--- a/Documentation/vm/page_migration
+++ b/Documentation/vm/page_migration
@@ -12,12 +12,18 @@ is running.
 
 Page migration allows a process to manually relocate the node on which its
 pages are located through the MF_MOVE and MF_MOVE_ALL options while setting
-a new memory policy. The pages of process can also be relocated
+a new memory policy via mbind(). The pages of process can also be relocated
 from another process using the sys_migrate_pages() function call. The
 migrate_pages function call takes two sets of nodes and moves pages of a
 process that are located on the from nodes to the destination nodes.
-
-Manual migration is very useful if for example the scheduler has relocated
+Page migration functions are provided by the numactl package by Andi Kleen
+(a version later than 0.9.3 is required. Get it from
+ftp://ftp.suse.com/pub/people/ak). numactl provided libnuma which
+provides an interface similar to other numa functionality for page migration.
+cat /proc/<pid>/numa_maps allows an easy review of where the pages of
+a process are located. See also the numa_maps manpage in the numactl package.
+
+Manual migration is useful if for example the scheduler has relocated
 a process to a processor on a distant node. A batch scheduler or an
 administrator may detect the situation and move the pages of the process
 nearer to the new processor. At some point in the future we may have
@@ -25,10 +31,12 @@ some mechanism in the scheduler that will automatically move the pages.
 
 Larger installations usually partition the system using cpusets into
 sections of nodes. Paul Jackson has equipped cpusets with the ability to
-move pages when a task is moved to another cpuset. This allows automatic
-control over locality of a process. If a task is moved to a new cpuset
-then also all its pages are moved with it so that the performance of the
-process does not sink dramatically (as is the case today).
+move pages when a task is moved to another cpuset (See ../cpusets.txt).
+Cpusets allows the automation of process locality. If a task is moved to
+a new cpuset then also all its pages are moved with it so that the
+performance of the process does not sink dramatically. Also the pages
+of processes in a cpuset are moved if the allowed memory nodes of a
+cpuset are changed.
 
 Page migration allows the preservation of the relative location of pages
 within a group of nodes for all migration techniques which will preserve a
@@ -37,22 +45,26 @@ process. This is necessary in order to preserve the memory latencies.
 Processes will run with similar performance after migration.
 
 Page migration occurs in several steps. First a high level
-description for those trying to use migrate_pages() and then
-a low level description of how the low level details work.
+description for those trying to use migrate_pages() from the kernel
+(for userspace usage see the Andi Kleen's numactl package mentioned above)
+and then a low level description of how the low level details work.
 
-A. Use of migrate_pages()
--------------------------
+A. In kernel use of migrate_pages()
+-----------------------------------
 
 1. Remove pages from the LRU.
 
    Lists of pages to be migrated are generated by scanning over
    pages and moving them into lists. This is done by
-   calling isolate_lru_page() or __isolate_lru_page().
+   calling isolate_lru_page().
    Calling isolate_lru_page increases the references to the page
-   so that it cannot vanish under us.
+   so that it cannot vanish while the page migration occurs.
+   It also prevents the swapper or other scans to encounter
+   the page.
 
-2. Generate a list of newly allocates page to move the contents
-   of the first list to.
+2. Generate a list of newly allocates page. These pages will contain the
+   contents of the pages from the first list after page migration is
+   complete.
 
 3. The migrate_pages() function is called which attempts
    to do the migration. It returns the moved pages in the
@@ -63,13 +75,17 @@ A. Use of migrate_pages()
 4. The leftover pages of various types are returned
    to the LRU using putback_to_lru_pages() or otherwise
    disposed of. The pages will still have the refcount as
-   increased by isolate_lru_pages()!
+   increased by isolate_lru_pages() if putback_to_lru_pages() is not
+   used! The kernel may want to handle the various cases of failures in
+   different ways.
 
-B. Operation of migrate_pages()
---------------------------------
+B. How migrate_pages() works
+----------------------------
 
-migrate_pages does several passes over its list of pages. A page is moved
-if all references to a page are removable at the time.
+migrate_pages() does several passes over its list of pages. A page is moved
+if all references to a page are removable at the time. The page has
+already been removed from the LRU via isolate_lru_page() and the refcount
+is increased so that the page cannot be freed while page migration occurs.
 
 Steps:
 
@@ -79,36 +95,40 @@ Steps:
 
 3. Make sure that the page has assigned swap cache entry if
    it is an anonyous page. The swap cache reference is necessary
-   to preserve the information contain in the page table maps.
+   to preserve the information contain in the page table maps while
+   page migration occurs.
 
 4. Prep the new page that we want to move to. It is locked
    and set to not being uptodate so that all accesses to the new
-   page immediately lock while we are moving references.
+   page immediately lock while the move is in progress.
 
-5. All the page table references to the page are either dropped (file backed)
-   or converted to swap references (anonymous pages). This should decrease the
-   reference count.
+5. All the page table references to the page are either dropped (file
+   backed pages) or converted to swap references (anonymous pages).
+   This should decrease the reference count.
 
-6. The radix tree lock is taken
+6. The radix tree lock is taken. This will cause all processes trying
+   to reestablish a pte to block on the radix tree spinlock.
 
 7. The refcount of the page is examined and we back out if references remain
    otherwise we know that we are the only one referencing this page.
 
 8. The radix tree is checked and if it does not contain the pointer to this
-   page then we back out.
+   page then we back out because someone else modified the mapping first.
 
 9. The mapping is checked. If the mapping is gone then a truncate action may
    be in progress and we back out.
 
-10. The new page is prepped with some settings from the old page so that accesses
-   to the new page will be discovered to have the correct settings.
+10. The new page is prepped with some settings from the old page so that
+   accesses to the new page will be discovered to have the correct settings.
 
 11. The radix tree is changed to point to the new page.
 
-12. The reference count of the old page is dropped because the reference has now
-    been removed.
+12. The reference count of the old page is dropped because the radix tree
+    reference is gone.
 
-13. The radix tree lock is dropped.
+13. The radix tree lock is dropped. With that lookups become possible again
+    and other processes will move from spinning on the tree lock to sleeping on
+    the locked new page.
 
 14. The page contents are copied to the new page.
 
@@ -119,11 +139,37 @@ Steps:
 
 17. Queued up writeback on the new page is triggered.
 
-18. If swap pte's were generated for the page then remove them again.
+18. If swap pte's were generated for the page then replace them with real
+    ptes. This will reenable access for processes not blocked by the page lock.
+
+19. The page locks are dropped from the old and new page.
+    Processes waiting on the page lock can continue.
+
+20. The new page is moved to the LRU and can be scanned by the swapper
+    etc again.
+
+TODO list
+---------
+
+- Page migration requires the use of swap handles to preserve the
+  information of the anonymous page table entries. This means that swap
+  space is reserved but never used. The maximum number of swap handles used
+  is determined by CHUNK_SIZE (see mm/mempolicy.c) per ongoing migration.
+  Reservation of pages could be avoided by having a special type of swap
+  handle that does not require swap space and that would only track the page
+  references. Something like that was proposed by Marcelo Tosatti in the
+  past (search for migration cache on lkml or linux-mm@kvack.org).
 
-19. The locks are dropped from the old and new page.
+- Page migration unmaps ptes for file backed pages and requires page
+  faults to reestablish these ptes. This could be optimized by somehow
+  recording the references before migration and then reestablish them later.
+  However, there are several locking challenges that have to be overcome
+  before this is possible.
 
-20. The new page is moved to the LRU.
+- Page migration generates read ptes for anonymous pages. Dirty page
+  faults are required to make the pages writable again. It may be possible
+  to generate a pte marked dirty if it is known that the page is dirty and
+  that this process has the only reference to that page.
 
-Christoph Lameter, December 19, 2005.
+Christoph Lameter, March 8, 2006.
 
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 9f80fa502f8f..32ba00bd0a2f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -799,6 +799,8 @@ source "drivers/i2c/Kconfig"
 
 source "drivers/spi/Kconfig"
 
+source "drivers/w1/Kconfig"
+
 source "drivers/hwmon/Kconfig"
 
 #source "drivers/l3/Kconfig"
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
index 0abbce8c70bc..b324dcac1c56 100644
--- a/arch/arm/kernel/asm-offsets.c
+++ b/arch/arm/kernel/asm-offsets.c
@@ -57,7 +57,9 @@ int main(void)
   DEFINE(TI_TP_VALUE,           offsetof(struct thread_info, tp_value));
   DEFINE(TI_FPSTATE,            offsetof(struct thread_info, fpstate));
   DEFINE(TI_VFPSTATE,           offsetof(struct thread_info, vfpstate));
-  DEFINE(TI_IWMMXT_STATE,       (offsetof(struct thread_info, fpstate)+4)&~7);
+#ifdef CONFIG_IWMMXT
+  DEFINE(TI_IWMMXT_STATE,       offsetof(struct thread_info, fpstate.iwmmxt));
+#endif
   BLANK();
   DEFINE(S_R0,                  offsetof(struct pt_regs, ARM_r0));
   DEFINE(S_R1,                  offsetof(struct pt_regs, ARM_r1));
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 7b6256bb590e..bc9e2f8ae326 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -610,15 +610,12 @@ static int ptrace_setfpregs(struct task_struct *tsk, void __user *ufp)
 static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
 {
         struct thread_info *thread = task_thread_info(tsk);
-        void *ptr = &thread->fpstate;
 
         if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
                 return -ENODATA;
         iwmmxt_task_disable(thread);  /* force it to ram */
-        /* The iWMMXt state is stored doubleword-aligned.  */
-        if (((long) ptr) & 4)
-                ptr += 4;
-        return copy_to_user(ufp, ptr, 0x98) ? -EFAULT : 0;
+        return copy_to_user(ufp, &thread->fpstate.iwmmxt, IWMMXT_SIZE)
+                ? -EFAULT : 0;
 }
 
 /*
@@ -627,15 +624,12 @@ static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
 static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp)
 {
         struct thread_info *thread = task_thread_info(tsk);
-        void *ptr = &thread->fpstate;
 
         if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
                 return -EACCES;
         iwmmxt_task_release(thread);  /* force a reload */
-        /* The iWMMXt state is stored doubleword-aligned.  */
-        if (((long) ptr) & 4)
-                ptr += 4;
-        return copy_from_user(ptr, ufp, 0x98) ? -EFAULT : 0;
+        return copy_from_user(&thead->fpstate.iwmmxt, ufp, IWMMXT_SIZE)
+                ? -EFAULT : 0;
 }
 
 #endif
diff --git a/arch/arm/lib/muldi3.S b/arch/arm/lib/muldi3.S
index 72d594184b8a..d89c60615794 100644
--- a/arch/arm/lib/muldi3.S
+++ b/arch/arm/lib/muldi3.S
@@ -29,8 +29,8 @@ ENTRY(__aeabi_lmul)
 
         mul     xh, yl, xh
         mla     xh, xl, yh, xh
-        mov     ip, xl, asr #16
-        mov     yh, yl, asr #16
+        mov     ip, xl, lsr #16
+        mov     yh, yl, lsr #16
         bic     xl, xl, ip, lsl #16
         bic     yl, yl, yh, lsl #16
         mla     xh, yh, ip, xh
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index daadc78e271b..5bf50a2a737d 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -8,11 +8,9 @@ menu "Intel IXP4xx Implementation Options"
 
 comment "IXP4xx Platforms"
 
-# This entry is placed on top because otherwise it would have
-# been shown as a submenu.
 config MACH_NSLU2
         bool
-        prompt "NSLU2" if !(MACH_IXDP465 || MACH_IXDPG425 || ARCH_IXDP425 || ARCH_ADI_COYOTE || ARCH_AVILA || ARCH_IXCDP1100 || ARCH_PRPMC1100 || MACH_GTWX5715)
+        prompt "Linksys NSLU2"
         help
           Say 'Y' here if you want your kernel to support Linksys's
           NSLU2 NAS device. For more information on this platform,
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c
index 856d56f3b2ae..a3b4c6ac5708 100644
--- a/arch/arm/mach-ixp4xx/nas100d-setup.c
+++ b/arch/arm/mach-ixp4xx/nas100d-setup.c
@@ -113,6 +113,9 @@ static void __init nas100d_init(void)
 {
         ixp4xx_sys_init();
 
+        /* gpio 14 and 15 are _not_ clocks */
+        *IXP4XX_GPIO_GPCLKR = 0;
+
         nas100d_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
         nas100d_flash_resource.end =
                 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S
index d921c1024ae0..2c6c2a7c05a0 100644
--- a/arch/arm/mm/cache-v6.S
+++ b/arch/arm/mm/cache-v6.S
@@ -96,15 +96,16 @@ ENTRY(v6_coherent_user_range)
 #ifdef HARVARD_CACHE
         bic     r0, r0, #CACHE_LINE_SIZE - 1
 1:      mcr     p15, 0, r0, c7, c10, 1          @ clean D line
-        mcr     p15, 0, r0, c7, c5, 1           @ invalidate I line
         add     r0, r0, #CACHE_LINE_SIZE
         cmp     r0, r1
         blo     1b
 #endif
-        mcr     p15, 0, r0, c7, c5, 6           @ invalidate BTB
-#ifdef HARVARD_CACHE
         mov     r0, #0
+#ifdef HARVARD_CACHE
         mcr     p15, 0, r0, c7, c10, 4          @ drain write buffer
+        mcr     p15, 0, r0, c7, c5, 0           @ I+BTB cache invalidate
+#else
+        mcr     p15, 0, r0, c7, c5, 6           @ invalidate BTB
 #endif
         mov     pc, lr
 
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 330695b6b19d..b103e56806bd 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -24,14 +24,16 @@
 static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
 {
         unsigned long to = ALIAS_FLUSH_START + (CACHE_COLOUR(vaddr) << PAGE_SHIFT);
+        const int zero = 0;
 
         set_pte(TOP_PTE(to), pfn_pte(pfn, PAGE_KERNEL));
         flush_tlb_kernel_page(to);
 
         asm(    "mcrr   p15, 0, %1, %0, c14\n"
-        "       mcrr    p15, 0, %1, %0, c5\n"
+        "       mcr     p15, 0, %2, c7, c10, 4\n"
+        "       mcr     p15, 0, %2, c7, c5, 0\n"
             :
-            : "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES)
+            : "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES), "r" (zero)
             : "cc");
 }
 
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c
index f39e09ef64ec..776c90989e06 100644
--- a/arch/i386/kernel/apic.c
+++ b/arch/i386/kernel/apic.c
@@ -570,16 +570,18 @@ void __devinit setup_local_APIC(void)
  */
 void lapic_shutdown(void)
 {
+        unsigned long flags;
+
         if (!cpu_has_apic)
                 return;
 
-        local_irq_disable();
+        local_irq_save(flags);
         clear_local_APIC();
 
         if (enabled_via_apicbase)
                 disable_local_APIC();
 
-        local_irq_enable();
+        local_irq_restore(flags);
 }
 
 #ifdef CONFIG_PM
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 262e44544dc8..9c205274c1cb 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -38,6 +38,12 @@
 
 #define EDAC_MC_VERSION "edac_mc  Ver: 2.0.0 " __DATE__
 
+/* For now, disable the EDAC sysfs code.  The sysfs interface that EDAC
+ * presents to user space needs more thought, and is likely to change
+ * substantially.
+ */
+#define DISABLE_EDAC_SYSFS
+
 #ifdef CONFIG_EDAC_DEBUG
 /* Values of 0 to 4 will generate output */
 int edac_debug_level = 1;
@@ -47,7 +53,7 @@ EXPORT_SYMBOL(edac_debug_level);
 /* EDAC Controls, setable by module parameter, and sysfs */
 static int log_ue = 1;
 static int log_ce = 1;
-static int panic_on_ue = 1;
+static int panic_on_ue;
 static int poll_msec = 1000;
 
 static int check_pci_parity = 0;        /* default YES check PCI parity */
@@ -77,6 +83,8 @@ static int pci_whitelist_count ;
 
 /*  START sysfs data and methods */
 
+#ifndef DISABLE_EDAC_SYSFS
+
 static const char *mem_types[] = {
         [MEM_EMPTY] = "Empty",
         [MEM_RESERVED] = "Reserved",
@@ -241,6 +249,7 @@ static struct kobj_type ktype_memctrl = {
         .default_attrs  = (struct attribute **) memctrl_attr,
 };
 
+#endif  /* DISABLE_EDAC_SYSFS */
 
 /* Initialize the main sysfs entries for edac:
  *   /sys/devices/system/edac
@@ -251,6 +260,11 @@ static struct kobj_type ktype_memctrl = {
  *         !0 FAILURE
  */
 static int edac_sysfs_memctrl_setup(void)
+#ifdef DISABLE_EDAC_SYSFS
+{
+        return 0;
+}
+#else
 {
         int err=0;
 
@@ -283,6 +297,7 @@ static int edac_sysfs_memctrl_setup(void)
 
         return err;
 }
+#endif  /* DISABLE_EDAC_SYSFS */
 
 /*
  * MC teardown:
@@ -290,6 +305,7 @@ static int edac_sysfs_memctrl_setup(void)
  */
 static void edac_sysfs_memctrl_teardown(void)
 {
+#ifndef DISABLE_EDAC_SYSFS
         debugf0("MC: " __FILE__ ": %s()\n", __func__);
 
         /* Unregister the MC's kobject */
@@ -300,8 +316,11 @@ static void edac_sysfs_memctrl_teardown(void)
 
         /* Unregister the 'edac' object */
         sysdev_class_unregister(&edac_class);
+#endif  /* DISABLE_EDAC_SYSFS */
 }
 
+#ifndef DISABLE_EDAC_SYSFS
+
 /*
  * /sys/devices/system/edac/pci;
  *      data structures and methods
@@ -554,11 +573,18 @@ static struct kobj_type ktype_edac_pci = {
         .default_attrs  = (struct attribute **) edac_pci_attr,
 };
 
+#endif  /* DISABLE_EDAC_SYSFS */
+
 /**
  * edac_sysfs_pci_setup()
  *
  */
 static int edac_sysfs_pci_setup(void)
+#ifdef DISABLE_EDAC_SYSFS
+{
+        return 0;
+}
+#else
 {
         int err;
 
@@ -582,16 +608,20 @@ static int edac_sysfs_pci_setup(void)
         }
         return err;
 }
-
+#endif  /* DISABLE_EDAC_SYSFS */
 
 static void edac_sysfs_pci_teardown(void)
 {
+#ifndef DISABLE_EDAC_SYSFS
         debugf0("MC: " __FILE__ ": %s()\n", __func__);
 
         kobject_unregister(&edac_pci_kobj);
         kobject_put(&edac_pci_kobj);
+#endif
 }
 
+#ifndef DISABLE_EDAC_SYSFS
+
 /* EDAC sysfs CSROW data structures and methods */
 
 /* Set of more detailed csrow<id> attribute show/store functions */
@@ -1045,6 +1075,8 @@ static struct kobj_type ktype_mci = {
         .default_attrs  = (struct attribute **) mci_attr,
 };
 
+#endif  /* DISABLE_EDAC_SYSFS */
+
 #define EDAC_DEVICE_SYMLINK     "device"
 
 /*
@@ -1056,6 +1088,11 @@ static struct kobj_type ktype_mci = {
  *      !0      Failure
  */
 static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
+#ifdef DISABLE_EDAC_SYSFS
+{
+        return 0;
+}
+#else
 {
         int i;
         int err;
@@ -1124,12 +1161,14 @@ fail:
 
         return err;
 }
+#endif  /* DISABLE_EDAC_SYSFS */
 
 /*
  * remove a Memory Controller instance
  */
 static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
 {
+#ifndef DISABLE_EDAC_SYSFS
         int i;
 
         debugf0("MC: " __FILE__ ": %s()\n", __func__);
@@ -1146,6 +1185,7 @@ static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
 
         kobject_unregister(&mci->edac_mci_kobj);
         kobject_put(&mci->edac_mci_kobj);
+#endif  /* DISABLE_EDAC_SYSFS */
 }
 
 /* END OF sysfs data and methods */
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 6eb93e45fcd3..4a478eb0e27d 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -825,7 +825,7 @@ proc_get_info(char *page, char **start, off_t off,
         p += sprintf(p, "PMU driver version     : %d\n", PMU_DRIVER_VERSION);
         p += sprintf(p, "PMU firmware version   : %02x\n", pmu_version);
         p += sprintf(p, "AC Power               : %d\n",
-                ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0));
+                ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0);
         p += sprintf(p, "Battery count          : %d\n", pmu_battery_count);
 
         return p - page;
diff --git a/drivers/media/video/mxb.c b/drivers/media/video/mxb.c
index 8416ceff524b..41715cacf926 100644
--- a/drivers/media/video/mxb.c
+++ b/drivers/media/video/mxb.c
@@ -1,7 +1,7 @@
 /*
     mxb - v4l2 driver for the Multimedia eXtension Board
     
-    Copyright (C) 1998-2003 Michael Hunold <michael@mihu.de>
+    Copyright (C) 1998-2006 Michael Hunold <michael@mihu.de>
 
     Visit http://www.mihu.de/linux/saa7146/mxb/
     for further details about this card.
@@ -327,6 +327,7 @@ static int mxb_init_done(struct saa7146_dev* dev)
         struct video_decoder_init init;
         struct i2c_msg msg;
         struct tuner_setup tun_setup;
+        v4l2_std_id std = V4L2_STD_PAL_BG;
 
         int i = 0, err = 0;
         struct  tea6415c_multiplex vm;  
@@ -361,6 +362,9 @@ static int mxb_init_done(struct saa7146_dev* dev)
         mxb->tuner->driver->command(mxb->tuner, VIDIOC_S_FREQUENCY,
                                         &mxb->cur_freq);
 
+        /* set a default video standard */
+        mxb->tuner->driver->command(mxb->tuner, VIDIOC_S_STD, &std);
+
         /* mute audio on tea6420s */
         mxb->tea6420_1->driver->command(mxb->tea6420_1,TEA6420_SWITCH, &TEA6420_line[6][0]);
         mxb->tea6420_2->driver->command(mxb->tea6420_2,TEA6420_SWITCH, &TEA6420_line[6][1]);
@@ -921,17 +925,21 @@ static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
         int one = 1;
 
         if(V4L2_STD_PAL_I == std->id ) {
+                v4l2_std_id std = V4L2_STD_PAL_I;
                 DEB_D(("VIDIOC_S_STD: setting mxb for PAL_I.\n"));
                 /* set the 7146 gpio register -- I don't know what this does exactly */
                 saa7146_write(dev, GPIO_CTRL, 0x00404050);
                 /* unset the 7111 gpio register -- I don't know what this does exactly */
                 mxb->saa7111a->driver->command(mxb->saa7111a,DECODER_SET_GPIO, &zero);
+                mxb->tuner->driver->command(mxb->tuner, VIDIOC_S_STD, &std);
         } else {
+                v4l2_std_id std = V4L2_STD_PAL_BG;
                 DEB_D(("VIDIOC_S_STD: setting mxb for PAL/NTSC/SECAM.\n"));
                 /* set the 7146 gpio register -- I don't know what this does exactly */
                 saa7146_write(dev, GPIO_CTRL, 0x00404050);
                 /* set the 7111 gpio register -- I don't know what this does exactly */
                 mxb->saa7111a->driver->command(mxb->saa7111a,DECODER_SET_GPIO, &one);
+                mxb->tuner->driver->command(mxb->tuner, VIDIOC_S_STD, &std);
         }
         return 0;
 }
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 155737e7483f..a19480d07888 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -178,7 +178,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
                  * we're at a block boundary and need to erase the whole block.
                  */
                 pageaddr = instr->addr / priv->page_size;
-                do_block = (pageaddr & 0x7) == 0 && instr->len <= blocksize;
+                do_block = (pageaddr & 0x7) == 0 && instr->len >= blocksize;
                 pageaddr = pageaddr << priv->page_offset;
 
                 command[0] = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE;
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 0f3798f81883..c0878f304e54 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10543,8 +10543,6 @@ static char * __devinit tg3_bus_string(struct tg3 *tp, char *str)
                         strcat(str, "66MHz");
                 else if (clock_ctrl == 6)
                         strcat(str, "100MHz");
-                else if (clock_ctrl == 7)
-                        strcat(str, "133MHz");
         } else {
                 strcpy(str, "PCI:");
                 if (tp->tg3_flags & TG3_FLAG_PCI_HIGH_SPEED)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 50b8c6754b1e..a1ed2d983740 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -249,8 +249,11 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
 
         if (align)
                 skb_reserve(skb, align);
-        if (memcpy_fromiovec(skb_put(skb, len), iv, len))
+        if (memcpy_fromiovec(skb_put(skb, len), iv, len)) {
+                tun->stats.rx_dropped++;
+                kfree_skb(skb);
                 return -EFAULT;
+        }
 
         skb->dev = tun->dev;
         switch (tun->flags & TUN_TYPE_MASK) {
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 1bbf231f8aaf..3c77d65960db 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -409,6 +409,9 @@ __init_channel_subsystem(struct subchannel_id schid, void *data)
                 /* -ENXIO: no more subchannels. */
                 case -ENXIO:
                         return ret;
+                /* -EIO: this subchannel set not supported. */
+                case -EIO:
+                        return ret;
                 default:
                         return 0;
                 }
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 7f551d66f47f..6eba56cd89ba 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -664,6 +664,7 @@ do { \
 #define ZFCP_STATUS_UNIT_TEMPORARY              0x00000002
 #define ZFCP_STATUS_UNIT_SHARED                 0x00000004
 #define ZFCP_STATUS_UNIT_READONLY               0x00000008
+#define ZFCP_STATUS_UNIT_REGISTERED             0x00000010
 
 /* FSF request status (this does not have a common part) */
 #define ZFCP_STATUS_FSFREQ_NOT_INIT             0x00000000
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index e3c4bdd29a60..57cb628a05aa 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -3391,10 +3391,13 @@ zfcp_erp_action_cleanup(int action, struct zfcp_adapter *adapter,
                     && (!atomic_test_mask(ZFCP_STATUS_UNIT_TEMPORARY,
                                           &unit->status))
                     && !unit->device
-                    && port->rport)
-                        scsi_add_device(port->adapter->scsi_host, 0,
-                                        port->rport->scsi_target_id,
-                                        unit->scsi_lun);
+                    && port->rport) {
+                        atomic_set_mask(ZFCP_STATUS_UNIT_REGISTERED,
+                                        &unit->status);
+                        scsi_scan_target(&port->rport->dev, 0,
+                                         port->rport->scsi_target_id,
+                                         unit->scsi_lun, 0);
+                }
                 zfcp_unit_put(unit);
                 break;
         case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 9f6b4d7a46f3..9e6d07d7b3c8 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -68,7 +68,7 @@ struct zfcp_data zfcp_data = {
               eh_host_reset_handler:   zfcp_scsi_eh_host_reset_handler,
                                        /* FIXME(openfcp): Tune */
               can_queue:               4096,
-              this_id:                 0,
+              this_id:                 -1,
               /*
                * FIXME:
                * one less? can zfcp_create_sbale cope with it?
@@ -183,7 +183,8 @@ zfcp_scsi_slave_alloc(struct scsi_device *sdp)
 
         read_lock_irqsave(&zfcp_data.config_lock, flags);
         unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun);
-        if (unit) {
+        if (unit && atomic_test_mask(ZFCP_STATUS_UNIT_REGISTERED,
+                                     &unit->status)) {
                 sdp->hostdata = unit;
                 unit->device = sdp;
                 zfcp_unit_get(unit);
@@ -208,6 +209,7 @@ zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
         struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
 
         if (unit) {
+                atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
                 sdpnt->hostdata = NULL;
                 unit->device = NULL;
                 zfcp_unit_put(unit);
@@ -291,7 +293,7 @@ zfcp_scsi_command_async(struct zfcp_adapter *adapter, struct zfcp_unit *unit,
                                "on port 0x%016Lx in recovery\n",
                                zfcp_get_busid_by_unit(unit),
                                unit->fcp_lun, unit->port->wwpn);
-                retval = SCSI_MLQUEUE_DEVICE_BUSY;
+                zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
                 goto out;
         }
 
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index a800fb51168b..559ff7aae3f1 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -742,23 +742,17 @@ static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *
                         struct ata_queued_cmd *qc;
                         qc = ata_qc_from_tag(ap, ap->active_tag);
                         if (!ahci_host_intr(ap, qc))
-                                if (ata_ratelimit()) {
-                                        struct pci_dev *pdev =
-                                                to_pci_dev(ap->host_set->dev);
-                                        dev_printk(KERN_WARNING, &pdev->dev,
+                                if (ata_ratelimit())
+                                        dev_printk(KERN_WARNING, host_set->dev,
                                           "unhandled interrupt on port %u\n",
                                           i);
-                                }
 
                         VPRINTK("port %u\n", i);
                 } else {
                         VPRINTK("port %u (no irq)\n", i);
-                        if (ata_ratelimit()) {
-                                struct pci_dev *pdev =
-                                        to_pci_dev(ap->host_set->dev);
-                                dev_printk(KERN_WARNING, &pdev->dev,
+                        if (ata_ratelimit())
+                                dev_printk(KERN_WARNING, host_set->dev,
                                         "interrupt on disabled port %u\n", i);
-                        }
                 }
 
                 irq_ack |= (1 << i);
diff --git a/drivers/scsi/pcmcia/Kconfig b/drivers/scsi/pcmcia/Kconfig
index df52190f4d94..eac8e179cfff 100644
--- a/drivers/scsi/pcmcia/Kconfig
+++ b/drivers/scsi/pcmcia/Kconfig
@@ -8,6 +8,7 @@ menu "PCMCIA SCSI adapter support"
 config PCMCIA_AHA152X
         tristate "Adaptec AHA152X PCMCIA support"
         depends on m && !64BIT
+        select SCSI_SPI_ATTRS
         help
           Say Y here if you intend to attach this type of PCMCIA SCSI host
           adapter to your computer.
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index f01ec0a7c506..84c3937ae8fb 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -126,6 +126,7 @@ static struct {
         {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
         {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
         {"BELKIN", "USB 2 HS-CF", "1.95",  BLIST_FORCELUN | BLIST_INQUIRY_36},
+        {"BROWNIE", "1600U3P", NULL, BLIST_NOREPORTLUN},
         {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
         {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
         {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN},     /* CMD RAID Controller */
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 929032e370db..13ea64119b73 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -223,7 +223,7 @@ static void fc_rport_terminate(struct fc_rport  *rport);
  */
 #define FC_STARGET_NUM_ATTRS    3
 #define FC_RPORT_NUM_ATTRS      9
-#define FC_HOST_NUM_ATTRS       16
+#define FC_HOST_NUM_ATTRS       17
 
 struct fc_internal {
         struct scsi_transport_template t;
diff --git a/fs/buffer.c b/fs/buffer.c
index 62cfd17dc5fe..a9b399402007 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3060,6 +3060,7 @@ int buffer_migrate_page(struct page *newpage, struct page *page)
 {
         struct address_space *mapping = page->mapping;
         struct buffer_head *bh, *head;
+        int rc;
 
         if (!mapping)
                 return -EAGAIN;
@@ -3069,8 +3070,9 @@ int buffer_migrate_page(struct page *newpage, struct page *page)
 
         head = page_buffers(page);
 
-        if (migrate_page_remove_references(newpage, page, 3))
-                return -EAGAIN;
+        rc = migrate_page_remove_references(newpage, page, 3);
+        if (rc)
+                return rc;
 
         bh = head;
         do {
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 848044af7e16..27f3e787faca 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -1155,15 +1155,16 @@ direct_io_worker(int rw, struct kiocb *iocb, struct inode *inode,
  * For writes, i_mutex is not held on entry; it is never taken.
  *
  * DIO_LOCKING (simple locking for regular files)
- * For writes we are called under i_mutex and return with i_mutex held, even though
- * it is internally dropped.
+ * For writes we are called under i_mutex and return with i_mutex held, even
+ * though it is internally dropped.
  * For reads, i_mutex is not held on entry, but it is taken and dropped before
  * returning.
  *
  * DIO_OWN_LOCKING (filesystem provides synchronisation and handling of
  *      uninitialised data, allowing parallel direct readers and writers)
  * For writes we are called without i_mutex, return without it, never touch it.
- * For reads, i_mutex is held on entry and will be released before returning.
+ * For reads we are called under i_mutex and return with i_mutex held, even
+ * though it may be internally dropped.
  *
  * Additional i_alloc_sem locking requirements described inline below.
  */
@@ -1182,7 +1183,8 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
         ssize_t retval = -EINVAL;
         loff_t end = offset;
         struct dio *dio;
-        int reader_with_isem = (rw == READ && dio_lock_type == DIO_OWN_LOCKING);
+        int release_i_mutex = 0;
+        int acquire_i_mutex = 0;
 
         if (rw & WRITE)
                 current->flags |= PF_SYNCWRITE;
@@ -1225,7 +1227,6 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
          *      writers need to grab i_alloc_sem only (i_mutex is already held)
          * For regular files using DIO_OWN_LOCKING,
          *      neither readers nor writers take any locks here
-         *      (i_mutex is already held and release for writers here)
          */
         dio->lock_type = dio_lock_type;
         if (dio_lock_type != DIO_NO_LOCKING) {
@@ -1236,7 +1237,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
                         mapping = iocb->ki_filp->f_mapping;
                         if (dio_lock_type != DIO_OWN_LOCKING) {
                                 mutex_lock(&inode->i_mutex);
-                                reader_with_isem = 1;
+                                release_i_mutex = 1;
                         }
 
                         retval = filemap_write_and_wait_range(mapping, offset,
@@ -1248,7 +1249,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 
                         if (dio_lock_type == DIO_OWN_LOCKING) {
                                 mutex_unlock(&inode->i_mutex);
-                                reader_with_isem = 0;
+                                acquire_i_mutex = 1;
                         }
                 }
 
@@ -1269,11 +1270,13 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
                                 nr_segs, blkbits, get_blocks, end_io, dio);
 
         if (rw == READ && dio_lock_type == DIO_LOCKING)
-                reader_with_isem = 0;
+                release_i_mutex = 0;
 
 out:
-        if (reader_with_isem)
+        if (release_i_mutex)
                 mutex_unlock(&inode->i_mutex);
+        else if (acquire_i_mutex)
+                mutex_lock(&inode->i_mutex);
         if (rw & WRITE)
                 current->flags &= ~PF_SYNCWRITE;
         return retval;
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 2967b7393415..79b5404db100 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -532,10 +532,10 @@ dbUpdatePMap(struct inode *ipbmap,
 
                 lastlblkno = lblkno;
 
+                LOGSYNC_LOCK(log, flags);
                 if (mp->lsn != 0) {
                         /* inherit older/smaller lsn */
                         logdiff(diffp, mp->lsn, log);
-                        LOGSYNC_LOCK(log, flags);
                         if (difft < diffp) {
                                 mp->lsn = lsn;
 
@@ -548,20 +548,17 @@ dbUpdatePMap(struct inode *ipbmap,
                         logdiff(diffp, mp->clsn, log);
                         if (difft > diffp)
                                 mp->clsn = tblk->clsn;
-                        LOGSYNC_UNLOCK(log, flags);
                 } else {
                         mp->log = log;
                         mp->lsn = lsn;
 
                         /* insert bp after tblock in logsync list */
-                        LOGSYNC_LOCK(log, flags);
-
                         log->count++;
                         list_add(&mp->synclist, &tblk->synclist);
 
                         mp->clsn = tblk->clsn;
-                        LOGSYNC_UNLOCK(log, flags);
                 }
+                LOGSYNC_UNLOCK(log, flags);
         }
 
         /* write the last buffer. */
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index 31b4aa13dd4b..4efa0d0eec39 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -2844,11 +2844,11 @@ diUpdatePMap(struct inode *ipimap,
          */
         lsn = tblk->lsn;
         log = JFS_SBI(tblk->sb)->log;
+        LOGSYNC_LOCK(log, flags);
         if (mp->lsn != 0) {
                 /* inherit older/smaller lsn */
                 logdiff(difft, lsn, log);
                 logdiff(diffp, mp->lsn, log);
-                LOGSYNC_LOCK(log, flags);
                 if (difft < diffp) {
                         mp->lsn = lsn;
                         /* move mp after tblock in logsync list */
@@ -2860,17 +2860,15 @@ diUpdatePMap(struct inode *ipimap,
                 logdiff(diffp, mp->clsn, log);
                 if (difft > diffp)
                         mp->clsn = tblk->clsn;
-                LOGSYNC_UNLOCK(log, flags);
         } else {
                 mp->log = log;
                 mp->lsn = lsn;
                 /* insert mp after tblock in logsync list */
-                LOGSYNC_LOCK(log, flags);
                 log->count++;
                 list_add(&mp->synclist, &tblk->synclist);
                 mp->clsn = tblk->clsn;
-                LOGSYNC_UNLOCK(log, flags);
         }
+        LOGSYNC_UNLOCK(log, flags);
         write_metapage(mp);
         return (0);
 }
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 220058d8616d..970b6a6aa337 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -662,12 +662,18 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl)
          * reclaimed while we're stuck in the unlock call. */
         fl->fl_u.nfs_fl.flags &= ~NFS_LCK_GRANTED;
 
+        /*
+         * Note: the server is supposed to either grant us the unlock
+         * request, or to deny it with NLM_LCK_DENIED_GRACE_PERIOD. In either
+         * case, we want to unlock.
+         */
+        do_vfs_lock(fl);
+
         if (req->a_flags & RPC_TASK_ASYNC) {
                 status = nlmclnt_async_call(req, NLMPROC_UNLOCK,
                                         &nlmclnt_unlock_ops);
                 /* Hrmf... Do the unlock early since locks_remove_posix()
                  * really expects us to free the lock synchronously */
-                do_vfs_lock(fl);
                 if (status < 0) {
                         nlmclnt_release_lockargs(req);
                         kfree(req);
@@ -680,7 +686,6 @@ nlmclnt_unlock(struct nlm_rqst *req, struct file_lock *fl)
         if (status < 0)
                 return status;
 
-        do_vfs_lock(fl);
         if (resp->status == NLM_LCK_GRANTED)
                 return 0;
 
diff --git a/fs/namespace.c b/fs/namespace.c
index 058a44865beb..39c81a8d6316 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1338,7 +1338,7 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
 
         new_ns = kmalloc(sizeof(struct namespace), GFP_KERNEL);
         if (!new_ns)
-                goto out;
+                return NULL;
 
         atomic_set(&new_ns->count, 1);
         INIT_LIST_HEAD(&new_ns->list);
@@ -1352,7 +1352,7 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
         if (!new_ns->root) {
                 up_write(&namespace_sem);
                 kfree(new_ns);
-                goto out;
+                return NULL;
         }
         spin_lock(&vfsmount_lock);
         list_add_tail(&new_ns->list, &new_ns->root->mnt_list);
@@ -1393,7 +1393,6 @@ struct namespace *dup_namespace(struct task_struct *tsk, struct fs_struct *fs)
         if (altrootmnt)
                 mntput(altrootmnt);
 
-out:
         return new_ns;
 }
 
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 04ab2fc360e7..4e9b3a1b36c5 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -57,6 +57,7 @@
 #define NFSDBG_FACILITY         NFSDBG_VFS
 #define MAX_DIRECTIO_SIZE       (4096UL << PAGE_SHIFT)
 
+static void nfs_free_user_pages(struct page **pages, int npages, int do_dirty);
 static kmem_cache_t *nfs_direct_cachep;
 
 /*
@@ -107,6 +108,15 @@ nfs_get_user_pages(int rw, unsigned long user_addr, size_t size,
                                         page_count, (rw == READ), 0,
                                         *pages, NULL);
                 up_read(&current->mm->mmap_sem);
+                /*
+                 * If we got fewer pages than expected from get_user_pages(),
+                 * the user buffer runs off the end of a mapping; return EFAULT.
+                 */
+                if (result >= 0 && result < page_count) {
+                        nfs_free_user_pages(*pages, result, 0);
+                        *pages = NULL;
+                        result = -EFAULT;
+                }
         }
         return result;
 }
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 984ca3454d04..f8c0066e02e1 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1430,7 +1430,7 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
         if (status == 0)
                 status = nfs4_do_fsinfo(server, fhandle, info);
 out:
-        return status;
+        return nfs4_map_errors(status);
 }
 
 static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
diff --git a/include/asm-arm/fpstate.h b/include/asm-arm/fpstate.h
index f7430e3aa55d..6246bf83627d 100644
--- a/include/asm-arm/fpstate.h
+++ b/include/asm-arm/fpstate.h
@@ -55,8 +55,10 @@ struct fp_soft_struct {
         unsigned int save[FP_SOFT_SIZE];                /* undefined information */
 };
 
+#define IWMMXT_SIZE     0x98
+
 struct iwmmxt_struct {
-        unsigned int save[0x98/sizeof(int) + 1];
+        unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
 };
 
 union fp_state {
diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h
index 33a33cbb6329..cfbccb63c67b 100644
--- a/include/asm-arm/thread_info.h
+++ b/include/asm-arm/thread_info.h
@@ -59,7 +59,7 @@ struct thread_info {
         struct cpu_context_save cpu_context;    /* cpu context */
         __u8                    used_cp[16];    /* thread used copro */
         unsigned long           tp_value;
-        union fp_state          fpstate;
+        union fp_state          fpstate __attribute__((aligned(8)));
         union vfp_state         vfpstate;
         struct restart_block    restart_block;
 };
diff --git a/kernel/fork.c b/kernel/fork.c
index a8eab86de7f1..ccdfbb16c86d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1062,6 +1062,12 @@ static task_t *copy_process(unsigned long clone_flags,
         p->clear_child_tid = (clone_flags & CLONE_CHILD_CLEARTID) ? child_tidptr: NULL;
 
         /*
+         * sigaltstack should be cleared when sharing the same VM
+         */
+        if ((clone_flags & (CLONE_VM|CLONE_VFORK)) == CLONE_VM)
+                p->sas_ss_sp = p->sas_ss_size = 0;
+
+        /*
          * Syscall tracing should be turned off in the child regardless
          * of CLONE_PTRACE.
          */
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 954981b14303..2a8206009422 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -748,7 +748,7 @@ long do_mbind(unsigned long start, unsigned long len,
                                       MPOL_MF_MOVE | MPOL_MF_MOVE_ALL))
             || mode > MPOL_MAX)
                 return -EINVAL;
-        if ((flags & MPOL_MF_MOVE_ALL) && !capable(CAP_SYS_RESOURCE))
+        if ((flags & MPOL_MF_MOVE_ALL) && !capable(CAP_SYS_NICE))
                 return -EPERM;
 
         if (start & ~PAGE_MASK)
@@ -942,20 +942,20 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
          */
         if ((current->euid != task->suid) && (current->euid != task->uid) &&
             (current->uid != task->suid) && (current->uid != task->uid) &&
-            !capable(CAP_SYS_ADMIN)) {
+            !capable(CAP_SYS_NICE)) {
                 err = -EPERM;
                 goto out;
         }
 
         task_nodes = cpuset_mems_allowed(task);
         /* Is the user allowed to access the target nodes? */
-        if (!nodes_subset(new, task_nodes) && !capable(CAP_SYS_ADMIN)) {
+        if (!nodes_subset(new, task_nodes) && !capable(CAP_SYS_NICE)) {
                 err = -EPERM;
                 goto out;
         }
 
         err = do_migrate_pages(mm, &old, &new,
-                capable(CAP_SYS_ADMIN) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
+                capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
 out:
         mmput(mm);
         return err;
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 7ccf763bb30b..4fe7e3aa02e2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -700,7 +700,7 @@ int migrate_page_remove_references(struct page *newpage,
          * the page.
          */
         if (!mapping || page_mapcount(page) + nr_refs != page_count(page))
-                return 1;
+                return -EAGAIN;
 
         /*
          * Establish swap ptes for anonymous pages or destroy pte
@@ -721,13 +721,15 @@ int migrate_page_remove_references(struct page *newpage,
          * If the page was not migrated then the PageSwapCache bit
          * is still set and the operation may continue.
          */
-        try_to_unmap(page, 1);
+        if (try_to_unmap(page, 1) == SWAP_FAIL)
+                /* A vma has VM_LOCKED set -> Permanent failure */
+                return -EPERM;
 
         /*
          * Give up if we were unable to remove all mappings.
          */
         if (page_mapcount(page))
-                return 1;
+                return -EAGAIN;
 
         write_lock_irq(&mapping->tree_lock);
 
@@ -738,7 +740,7 @@ int migrate_page_remove_references(struct page *newpage,
         if (!page_mapping(page) || page_count(page) != nr_refs ||
                         *radix_pointer != page) {
                 write_unlock_irq(&mapping->tree_lock);
-                return 1;
+                return -EAGAIN;
         }
 
         /*
@@ -813,10 +815,14 @@ EXPORT_SYMBOL(migrate_page_copy);
  */
 int migrate_page(struct page *newpage, struct page *page)
 {
+        int rc;
+
         BUG_ON(PageWriteback(page));    /* Writeback must be complete */
 
-        if (migrate_page_remove_references(newpage, page, 2))
-                return -EAGAIN;
+        rc = migrate_page_remove_references(newpage, page, 2);
+
+        if (rc)
+                return rc;
 
         migrate_page_copy(newpage, page);
 
diff --git a/net/bridge/netfilter/Makefile b/net/bridge/netfilter/Makefile
index 8bf6d9f6e9d3..905087e0d485 100644
--- a/net/bridge/netfilter/Makefile
+++ b/net/bridge/netfilter/Makefile
@@ -29,4 +29,4 @@ obj-$(CONFIG_BRIDGE_EBT_SNAT) += ebt_snat.o
 
 # watchers
 obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_log.o
-obj-$(CONFIG_BRIDGE_EBT_LOG) += ebt_ulog.o
+obj-$(CONFIG_BRIDGE_EBT_ULOG) += ebt_ulog.o
diff --git a/net/ieee80211/ieee80211_crypt_ccmp.c b/net/ieee80211/ieee80211_crypt_ccmp.c
index 097bcea2129f..78b2d13e80e3 100644
--- a/net/ieee80211/ieee80211_crypt_ccmp.c
+++ b/net/ieee80211/ieee80211_crypt_ccmp.c
@@ -131,7 +131,7 @@ static void ccmp_init_blocks(struct crypto_tfm *tfm,
         a4_included = ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
                        (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS));
         qc_included = ((WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_DATA) &&
-                       (WLAN_FC_GET_STYPE(fc) & 0x08));
+                       (WLAN_FC_GET_STYPE(fc) & IEEE80211_STYPE_QOS_DATA));
         aad_len = 22;
         if (a4_included)
                 aad_len += 6;
diff --git a/net/ieee80211/ieee80211_rx.c b/net/ieee80211/ieee80211_rx.c
index 6b8469da29b1..785d5a170a7f 100644
--- a/net/ieee80211/ieee80211_rx.c
+++ b/net/ieee80211/ieee80211_rx.c
@@ -1515,10 +1515,10 @@ static void ieee80211_process_probe_response(struct ieee80211_device
 
         if (is_beacon(beacon->header.frame_ctl)) {
                 if (ieee->handle_beacon != NULL)
-                        ieee->handle_beacon(dev, beacon, &network);
+                        ieee->handle_beacon(dev, beacon, target);
         } else {
                 if (ieee->handle_probe_response != NULL)
-                        ieee->handle_probe_response(dev, beacon, &network);
+                        ieee->handle_probe_response(dev, beacon, target);
         }
 }
 
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 57d290d89ec2..8ee4d016740d 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -847,10 +847,11 @@ int ip_append_data(struct sock *sk,
         if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) &&
                         (rt->u.dst.dev->features & NETIF_F_UFO)) {
 
-                if(ip_ufo_append_data(sk, getfrag, from, length, hh_len,
-                               fragheaderlen, transhdrlen, mtu, flags))
+                err = ip_ufo_append_data(sk, getfrag, from, length, hh_len,
+                                         fragheaderlen, transhdrlen, mtu,
+                                         flags);
+                if (err)
                         goto error;
-
                 return 0;
         }
 
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index dd1048be8a01..7d7ab94a7a2e 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -771,7 +771,7 @@ static int get_entries(const struct arpt_get_entries *entries,
         struct arpt_table *t;
 
         t = xt_find_table_lock(NF_ARP, entries->name);
-        if (t || !IS_ERR(t)) {
+        if (t && !IS_ERR(t)) {
                 struct xt_table_info *private = t->private;
                 duprintf("t->private->number = %u\n",
                          private->number);
diff --git a/net/ipv4/tcp_highspeed.c b/net/ipv4/tcp_highspeed.c
index 63cf7e540847..e0e9d1383c7c 100644
--- a/net/ipv4/tcp_highspeed.c
+++ b/net/ipv4/tcp_highspeed.c
@@ -125,7 +125,7 @@ static void hstcp_cong_avoid(struct sock *sk, u32 adk, u32 rtt,
                 /* Update AIMD parameters */
                 if (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd) {
                         while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd &&
-                               ca->ai < HSTCP_AIMD_MAX)
+                               ca->ai < HSTCP_AIMD_MAX - 1)
                                 ca->ai++;
                 } else if (tp->snd_cwnd < hstcp_aimd_vals[ca->ai].cwnd) {
                         while (tp->snd_cwnd > hstcp_aimd_vals[ca->ai].cwnd &&
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index a7623ead39a8..9f498a6c8895 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1036,6 +1036,10 @@ static int tcp_tso_should_defer(struct sock *sk, struct tcp_sock *tp, struct sk_
 
         limit = min(send_win, cong_win);
 
+        /* If a full-sized TSO skb can be sent, do it. */
+        if (limit >= 65536)
+                return 0;
+
         if (sysctl_tcp_tso_win_divisor) {
                 u32 chunk = min(tp->snd_wnd, tp->snd_cwnd * tp->mss_cache);
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index b7d8822c1be4..19727d941962 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -822,7 +822,7 @@ struct ipv6_saddr_score {
         int             addr_type;
         unsigned int    attrs;
         int             matchlen;
-        unsigned int    scope;
+        int             scope;
         unsigned int    rule;
 };
 
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index c7932cb420a5..84963749ab77 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -279,7 +279,7 @@ static int ah6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struc
                 goto out;
         memcpy(tmp_hdr, skb->nh.raw, hdr_len);
         if (ipv6_clear_mutable_options(skb->nh.ipv6h, hdr_len))
-                goto out;
+                goto free_out;
         skb->nh.ipv6h->priority    = 0;
         skb->nh.ipv6h->flow_lbl[0] = 0;
         skb->nh.ipv6h->flow_lbl[1] = 0;
diff --git a/net/ipv6/inet6_hashtables.c b/net/ipv6/inet6_hashtables.c
index 4154f3a8b6cf..bb8ffb8a14c5 100644
--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -87,7 +87,7 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row,
                                      struct inet_timewait_sock **twp)
 {
         struct inet_hashinfo *hinfo = death_row->hashinfo;
-        const struct inet_sock *inet = inet_sk(sk);
+        struct inet_sock *inet = inet_sk(sk);
         const struct ipv6_pinfo *np = inet6_sk(sk);
         const struct in6_addr *daddr = &np->rcv_saddr;
         const struct in6_addr *saddr = &np->daddr;
@@ -129,6 +129,10 @@ static int __inet6_check_established(struct inet_timewait_death_row *death_row,
         }
 
 unique:
+        /* Must record num and sport now. Otherwise we will see
+         * in hash table socket with a funny identity. */
+        inet->num = lport;
+        inet->sport = htons(lport);
         BUG_TRAP(sk_unhashed(sk));
         __sk_add_node(sk, &head->chain);
         sk->sk_hash = hash;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index f999edd846a9..5bf70b1442ea 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -944,10 +944,11 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
         if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) &&
             (rt->u.dst.dev->features & NETIF_F_UFO)) {
 
-                if(ip6_ufo_append_data(sk, getfrag, from, length, hh_len,
-                                fragheaderlen, transhdrlen, mtu, flags))
+                err = ip6_ufo_append_data(sk, getfrag, from, length, hh_len,
+                                          fragheaderlen, transhdrlen, mtu,
+                                          flags);
+                if (err)
                         goto error;
-
                 return 0;
         }
 
diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index cac38b2e147a..2cf5fb8322c4 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -928,8 +928,12 @@ nfqnl_recv_config(struct sock *ctnl, struct sk_buff *skb,
 
         if (nfqa[NFQA_CFG_PARAMS-1]) {
                 struct nfqnl_msg_config_params *params;
-                params = NFA_DATA(nfqa[NFQA_CFG_PARAMS-1]);
 
+                if (!queue) {
+                        ret = -ENOENT;
+                        goto out_put;
+                }
+                params = NFA_DATA(nfqa[NFQA_CFG_PARAMS-1]);
                 nfqnl_set_mode(queue, params->copy_mode,
                                 ntohl(params->copy_range));
         }
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 6b9772d95872..59dc7d140600 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1194,6 +1194,9 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
                 msg->msg_namelen = sizeof(*addr);
         }
 
+        if (nlk->flags & NETLINK_RECV_PKTINFO)
+                netlink_cmsg_recv_pktinfo(msg, skb);
+
         if (NULL == siocb->scm) {
                 memset(&scm, 0, sizeof(scm));
                 siocb->scm = &scm;
@@ -1205,8 +1208,6 @@ static int netlink_recvmsg(struct kiocb *kiocb, struct socket *sock,
                 netlink_dump(sk);
 
         scm_recv(sock, msg, siocb->scm, flags);
-        if (nlk->flags & NETLINK_RECV_PKTINFO)
-                netlink_cmsg_recv_pktinfo(msg, skb);
 
 out:
         netlink_rcv_wake(sk);
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 792ce59940ec..2ffa11c6e8de 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -707,7 +707,7 @@ static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
 
 rtattr_failure:
 nlmsg_failure:
-        skb_trim(skb, b - skb->data);
+        kfree_skb(skb);
         return -1;
 }
 
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d2f0550c4ba0..d78479782045 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -113,7 +113,7 @@ rpc_new_client(struct rpc_xprt *xprt, char *servname,
 
         err = -EINVAL;
         if (!xprt)
-                goto out_err;
+                goto out_no_xprt;
         if (vers >= program->nrvers || !(version = program->version[vers]))
                 goto out_err;
 
@@ -182,6 +182,7 @@ out_no_path:
         kfree(clnt);
 out_err:
         xprt_destroy(xprt);
+out_no_xprt:
         return ERR_PTR(err);
 }
 
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 802d4fe0f55c..e838d042f7f5 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -515,16 +515,14 @@ struct rpc_task * rpc_wake_up_next(struct rpc_wait_queue *queue)
  */
 void rpc_wake_up(struct rpc_wait_queue *queue)
 {
-        struct rpc_task *task;
-
+        struct rpc_task *task, *next;
         struct list_head *head;
+
         spin_lock_bh(&queue->lock);
         head = &queue->tasks[queue->maxpriority];
         for (;;) {
-                while (!list_empty(head)) {
-                        task = list_entry(head->next, struct rpc_task, u.tk_wait.list);
+                list_for_each_entry_safe(task, next, head, u.tk_wait.list)
                         __rpc_wake_up_task(task);
-                }
                 if (head == &queue->tasks[0])
                         break;
                 head--;
@@ -541,14 +539,13 @@ void rpc_wake_up(struct rpc_wait_queue *queue)
  */
 void rpc_wake_up_status(struct rpc_wait_queue *queue, int status)
 {
+        struct rpc_task *task, *next;
         struct list_head *head;
-        struct rpc_task *task;
 
         spin_lock_bh(&queue->lock);
         head = &queue->tasks[queue->maxpriority];
         for (;;) {
-                while (!list_empty(head)) {
-                        task = list_entry(head->next, struct rpc_task, u.tk_wait.list);
+                list_for_each_entry_safe(task, next, head, u.tk_wait.list) {
                         task->tk_status = status;
                         __rpc_wake_up_task(task);
                 }