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authorMatthew Wilcox <willy@linux.intel.com>2016-05-21 02:01:54 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-21 02:58:30 +0200
commit57578c2ea2cb2e0d362a9212ac83cf90221d4883 (patch)
tree75d21adcd94ea063abe57c3e9f97076694183f7d /mm/Kconfig
parentradix-tree: remove unused looping macros (diff)
downloadlinux-57578c2ea2cb2e0d362a9212ac83cf90221d4883.tar.xz
linux-57578c2ea2cb2e0d362a9212ac83cf90221d4883.zip
raxix-tree: introduce CONFIG_RADIX_TREE_MULTIORDER
I've been receiving increasingly concerned notes from 0day about how much my recent changes have been bloating the radix tree. Make it happier by only including multiorder support if CONFIG_TRANSPARENT_HUGEPAGES is set. This is an independent Kconfig option, so other radix tree users can also set it if they have a need. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com> Cc: Jan Kara <jack@suse.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig')
-rw-r--r--mm/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 1a6a28ebcb8b..2664c118b5d2 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -404,6 +404,7 @@ config TRANSPARENT_HUGEPAGE
bool "Transparent Hugepage Support"
depends on HAVE_ARCH_TRANSPARENT_HUGEPAGE
select COMPACTION
+ select RADIX_TREE_MULTIORDER
help
Transparent Hugepages allows the kernel to use huge pages and
huge tlb transparently to the applications whenever possible.