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authorGavin Shan <gwshan@linux.vnet.ibm.com>2016-05-28 00:27:49 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-28 00:49:37 +0300
commit11e685672a0861ce136cc4e7f6fdd11e5390b1fa (patch)
tree4850c18e2655f5f8395be6764e2924c08a91c733 /mm/Kconfig
parent7cf7806ce1e30f1691cf340f70b807acbdf419ef (diff)
downloadlinux-11e685672a0861ce136cc4e7f6fdd11e5390b1fa.tar.xz
mm: disable DEFERRED_STRUCT_PAGE_INIT on !NO_BOOTMEM
When we have !NO_BOOTMEM, the deferred page struct initialization doesn't work well because the pages reserved in bootmem are released to the page allocator uncoditionally. It causes memory corruption and system crash eventually. As Mel suggested, the bootmem is retiring slowly. We fix the issue by simply hiding DEFERRED_STRUCT_PAGE_INIT when bootmem is enabled. Link: http://lkml.kernel.org/r/1460602170-5821-1-git-send-email-gwshan@linux.vnet.ibm.com Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Acked-by: Mel Gorman <mgorman@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/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 22fa8189e4fc..3e2daef3c946 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -648,7 +648,7 @@ config DEFERRED_STRUCT_PAGE_INIT
bool "Defer initialisation of struct pages to kthreads"
default n
depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
- depends on MEMORY_HOTPLUG
+ depends on NO_BOOTMEM && MEMORY_HOTPLUG
depends on !FLATMEM
help
Ordinarily all struct pages are initialised during early boot in a