SLUB: Don't pass __GFP_FAIL for the initial allocation

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

diff --git a/mm/Kconfig b/mm/Kconfig
index aa79900..c948d4c 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -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
@@ -113,7 +113,7 @@ config SPARSEMEM_EXTREME
        depends on SPARSEMEM && !SPARSEMEM_STATIC
 
 config SPARSEMEM_VMEMMAP_ENABLE
-       def_bool n
+       bool
 
 config SPARSEMEM_VMEMMAP
        bool "Sparse Memory virtual memmap"
@@ -128,11 +128,11 @@ config SPARSEMEM_VMEMMAP
 config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
        depends on SPARSEMEM || X86_64_ACPI_NUMA
-       depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG
+       depends on HOTPLUG && !(HIBERNATION && !S390) && ARCH_ENABLE_MEMORY_HOTPLUG
        depends on (IA64 || X86 || PPC64 || SUPERH || S390)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
-       depends on SPARSEMEM && HOTPLUG && HIBERNATION
+       depends on SPARSEMEM && HOTPLUG && HIBERNATION && !S390
 
 config MEMORY_HOTPLUG_SPARSE
        def_bool y
@@ -181,11 +181,8 @@ config MIGRATION
          example on NUMA systems to put pages nearer to the processors accessing
          the page.
 
-config RESOURCES_64BIT
-       bool "64 bit Memory and IO resources (EXPERIMENTAL)" if (!64BIT && EXPERIMENTAL)
-       default 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
@@ -205,3 +202,61 @@ config NR_QUICK
 config VIRT_TO_BUS
        def_bool y
        depends on !ARCH_NO_VIRT_TO_BUS
+
+config HAVE_MLOCK
+       bool
+       default y if MMU=y
+
+config HAVE_MLOCKED_PAGE_BIT
+       bool
+       default y if HAVE_MLOCK=y
+
+config MMU_NOTIFIER
+       bool
+
+config DEFAULT_MMAP_MIN_ADDR
+        int "Low address space to protect from user allocation"
+        default 4096
+        help
+         This is the portion of low virtual memory which should be protected
+         from userspace allocation.  Keeping a user from writing to low pages
+         can help reduce the impact of kernel NULL pointer bugs.
+
+         For most ia64, ppc64 and x86 users with lots of address space
+         a value of 65536 is reasonable and should cause no problems.
+         On arm and other archs it should not be higher than 32768.
+         Programs which use vm86 functionality would either need additional
+         permissions from either the LSM or the capabilities module or have
+         this protection disabled.
+
+         This value can be changed after boot using the
+         /proc/sys/vm/mmap_min_addr tunable.
+
+
+config NOMMU_INITIAL_TRIM_EXCESS
+       int "Turn on mmap() excess space trimming before booting"
+       depends on !MMU
+       default 1
+       help
+         The NOMMU mmap() frequently needs to allocate large contiguous chunks
+         of memory on which to store mappings, but it can only ask the system
+         allocator for chunks in 2^N*PAGE_SIZE amounts - which is frequently
+         more than it requires.  To deal with this, mmap() is able to trim off
+         the excess and return it to the allocator.
+
+         If trimming is enabled, the excess is trimmed off and returned to the
+         system allocator, which can cause extra fragmentation, particularly
+         if there are a lot of transient processes.
+
+         If trimming is disabled, the excess is kept, but not used, which for
+         long-term mappings means that the space is wasted.
+
+         Trimming can be dynamically controlled through a sysctl option
+         (/proc/sys/vm/nr_trim_pages) which specifies the minimum number of
+         excess pages there must be before trimming should occur, or zero if
+         no trimming is to occur.
+
+         This option specifies the initial value of this option.  The default
+         of 1 says that all excess pages should be trimmed.
+
+         See Documentation/nommu-mmap.txt for more information.