X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=mm%2FKconfig;h=be0ee11fa0d9ee8ff068244a559a2c52ad96c84c;hb=c8de641b1e9c5489aa6ca57b7836acd68e7563f1;hp=78a23c5c302d96ad6ef1198a02deb39a9a6bc228;hpb=a74306fe94c82429fd0ec9f4316de90b405012d2;p=cascardo%2Flinux.git

diff --git a/mm/Kconfig b/mm/Kconfig
index 78a23c5c302d..be0ee11fa0d9 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -262,7 +262,14 @@ config COMPACTION
 	select MIGRATION
 	depends on MMU
 	help
-	  Allows the compaction of memory for the allocation of huge pages.
+          Compaction is the only memory management component to form
+          high order (larger physically contiguous) memory blocks
+          reliably. The page allocator relies on compaction heavily and
+          the lack of the feature can lead to unexpected OOM killer
+          invocations for high order memory requests. You shouldn't
+          disable this option unless there really is a strong reason for
+          it and then we would be really interested to hear about that at
+          linux-mm@kvack.org.
 
 #
 # support for page migration