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authorH. Peter Anvin <hpa@zytor.com>2009-08-31 11:17:44 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-08-31 11:17:44 -0700
commita269cca9926faf8e44b340b017be0d884203141b (patch)
tree992a9ab46250d958d9663fd5b64479c95fbe7732 /mm/Kconfig
parent47d25003cbd9e9030a95f7ccc4e70fec6aa7b844 (diff)
downloadconfigs-a269cca9926faf8e44b340b017be0d884203141b.tar.gz
mm: remove !NUMA condition from PAGEFLAGS_EXTENDED condition set
CONFIG_PAGEFLAGS_EXTENDED disables a trick to conserve pageflags. This trick is indended to be enabled when the pressure on page flags is very high. The previous condition was: - depends on 64BIT || SPARSEMEM_VMEMMAP || !NUMA || !SPARSEMEM ... however, the sparsemem code already has a way to crowd out the node number from the pageflags, which means that !NUMA actually doesn't contribute to hard pageflags exhaustion. This is required for the new PG_uncached flag to not cause pageflags exhaustion on x86_32 + PAE + SPARSEMEM + !NUMA. Signed-off-by: H. Peter Anvin <hpa@zytor.com> LKML-Reference: <4A9828F4.4040905@zytor.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Suresh Siddha <suresh.siddha@intel.com>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index c948d4ca8bd..fe221c7df75 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -153,7 +153,7 @@ config MEMORY_HOTREMOVE
#
config PAGEFLAGS_EXTENDED
def_bool y
- depends on 64BIT || SPARSEMEM_VMEMMAP || !NUMA || !SPARSEMEM
+ depends on 64BIT || SPARSEMEM_VMEMMAP || !SPARSEMEM
# Heavily threaded applications may benefit from splitting the mm-wide
# page_table_lock, so that faults on different parts of the user address