X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2FKconfig;h=9ef97417a0b92d1b163c55efe6ced4b2e4ce4c73;hb=cf03613e9662c28372b8c83538fb402df37c53f5;hp=c070ec0c15bfeee19c59659a668f7ab920ee77b3;hpb=c00046c279a2521075250fad682ca0acc10d4fd7;p=linux-2.6

diff --git a/mm/Kconfig b/mm/Kconfig
index c070ec0c15..9ef97417a0 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -112,18 +112,17 @@ config SPARSEMEM_EXTREME
 	def_bool y
 	depends on SPARSEMEM && !SPARSEMEM_STATIC
 
-#
-# SPARSEMEM_VMEMMAP uses a virtually mapped mem_map to optimise pfn_to_page
-# and page_to_pfn.  The most efficient option where kernel virtual space is
-# not under pressure.
-#
 config SPARSEMEM_VMEMMAP_ENABLE
 	def_bool n
 
 config SPARSEMEM_VMEMMAP
-	bool
-	depends on SPARSEMEM
-	default y if (SPARSEMEM_VMEMMAP_ENABLE)
+	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