vmscan: avoid multiplication overflow in shrink_zone()

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

diff --git a/mm/Kconfig b/mm/Kconfig
index 0bd9c2d..57971d2 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"
@@ -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
@@ -206,5 +203,25 @@ 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
+       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.
+
+         See Documentation/vm/unevictable-lru.txt for more information.
+
+config HAVE_MLOCK
+       bool
+       default y if MMU=y
+
+config HAVE_MLOCKED_PAGE_BIT
+       bool
+       default y if HAVE_MLOCK=y && UNEVICTABLE_LRU=y
+
 config MMU_NOTIFIER
        bool