X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2FKconfig;h=a9cb80ae6409df599cc3823a7a072a158c41112c;hb=c84db23c6e587d3ab00a41c51fedf758e1f6ecd4;hp=1a4473fcb2ca0d2ea163301ba49d740d78310e8b;hpb=53b2ec5518aa2623e8c0cb36f1c304a797988a46;p=linux-2.6

diff --git a/mm/Kconfig b/mm/Kconfig
index 1a4473fcb2..a9cb80ae64 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -11,7 +11,7 @@ choice
 
 config FLATMEM_MANUAL
 	bool "Flat Memory"
-	depends on !ARCH_DISCONTIGMEM_ENABLE || ARCH_FLATMEM_ENABLE
+	depends on !(ARCH_DISCONTIGMEM_ENABLE || ARCH_SPARSEMEM_ENABLE) || ARCH_FLATMEM_ENABLE
 	help
 	  This option allows you to change some of the ways that
 	  Linux manages its memory internally.  Most users will
@@ -125,10 +125,17 @@ comment "Memory hotplug is currently incompatible with Software Suspend"
 # space can be handled with less contention: split it at this NR_CPUS.
 # Default to 4 for wider testing, though 8 might be more appropriate.
 # ARM's adjust_pte (unused if VIPT) depends on mm-wide page_table_lock.
-# PA-RISC's debug spinlock_t is too large for the 32-bit struct page.
+# PA-RISC 7xxx's spinlock_t would enlarge struct page from 32 to 44 bytes.
 #
 config SPLIT_PTLOCK_CPUS
 	int
 	default "4096" if ARM && !CPU_CACHE_VIPT
-	default "4096" if PARISC && DEBUG_SPINLOCK && !64BIT
+	default "4096" if PARISC && !PA20
 	default "4"
+
+#
+# support for page migration
+#
+config MIGRATION
+	def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
+	depends on SWAP