NFSv4: Ensure that file unlock requests don't conflict with state recovery

[safe/jmp/linux-2.6] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index 8ac412b..5b5790f 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -37,7 +37,7 @@ config DISCONTIGMEM_MANUAL
          in their physical address spaces, and this option provides
          more efficient handling of these holes.  However, the vast
          majority of hardware has quite flat address spaces, and
-         can have degraded performance from extra overhead that
+         can have degraded performance from the extra overhead that
          this option imposes.
 
          Many NUMA configurations will have this as the only option.
@@ -101,7 +101,7 @@ config HAVE_MEMORY_PRESENT
 # with gcc 3.4 and later.
 #
 config SPARSEMEM_STATIC
-       def_bool n
+       bool
 
 #
 # Architecture platforms which require a two level mem_section in SPARSEMEM
@@ -112,20 +112,49 @@ config SPARSEMEM_EXTREME
        def_bool y
        depends on SPARSEMEM && !SPARSEMEM_STATIC
 
+config SPARSEMEM_VMEMMAP_ENABLE
+       bool
+
+config SPARSEMEM_VMEMMAP
+       bool "Sparse Memory virtual memmap"
+       depends on SPARSEMEM && SPARSEMEM_VMEMMAP_ENABLE
+       default y
+       help
+        SPARSEMEM_VMEMMAP uses a virtually mapped memmap to optimise
+        pfn_to_page and page_to_pfn operations.  This is the most
+        efficient option when sufficient kernel resources are available.
+
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
        depends on SPARSEMEM || X86_64_ACPI_NUMA
-       depends on HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
-       depends on (IA64 || X86 || PPC64)
+       depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG
+       depends on (IA64 || X86 || PPC64 || SUPERH || S390)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
-       depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND
+       depends on SPARSEMEM && HOTPLUG && HIBERNATION
 
 config MEMORY_HOTPLUG_SPARSE
        def_bool y
        depends on SPARSEMEM && MEMORY_HOTPLUG
 
+config MEMORY_HOTREMOVE
+       bool "Allow for memory hot remove"
+       depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
+       depends on MIGRATION
+
+#
+# If we have space for more page flags then we can enable additional
+# optimizations and functionality.
+#
+# Regular Sparsemem takes page flag bits for the sectionid if it does not
+# use a virtual memmap. Disable extended page flags for 32 bit platforms
+# that require the use of a sectionid in the page flags.
+#
+config PAGEFLAGS_EXTENDED
+       def_bool y
+       depends on 64BIT || SPARSEMEM_VMEMMAP || !NUMA || !SPARSEMEM
+
 # Heavily threaded applications may benefit from splitting the mm-wide
 # page_table_lock, so that faults on different parts of the user address
 # space can be handled with less contention: split it at this NR_CPUS.
@@ -145,7 +174,7 @@ config SPLIT_PTLOCK_CPUS
 config MIGRATION
        bool "Page migration"
        def_bool y
-       depends on NUMA
+       depends on NUMA || ARCH_ENABLE_MEMORY_HOTREMOVE
        help
          Allows the migration of the physical location of pages of processes
          while the virtual addresses are not changed. This is useful for
@@ -158,13 +187,38 @@ config RESOURCES_64BIT
        help
          This option allows memory and IO resources to be 64 bit.
 
+config PHYS_ADDR_T_64BIT
+       def_bool 64BIT || ARCH_PHYS_ADDR_T_64BIT
+
 config ZONE_DMA_FLAG
        int
        default "0" if !ZONE_DMA
        default "1"
 
+config BOUNCE
+       def_bool y
+       depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM)
+
 config NR_QUICK
        int
        depends on QUICKLIST
-       default "2" if (SUPERH && !SUPERH64)
+       default "2" if SUPERH || AVR32
        default "1"
+
+config VIRT_TO_BUS
+       def_bool y
+       depends on !ARCH_NO_VIRT_TO_BUS
+
+config UNEVICTABLE_LRU
+       bool "Add LRU list to track non-evictable pages"
+       default y
+       depends on MMU
+       help
+         Keeps unevictable pages off of the active and inactive pageout
+         lists, so kswapd will not waste CPU time or have its balancing
+         algorithms thrown off by scanning these pages.  Selecting this
+         will use one page flag and increase the code size a little,
+         say Y unless you know what you are doing.
+
+config MMU_NOTIFIER
+       bool