The patch titled
Subject: mm: disable DEFERRED_STRUCT_PAGE_INIT on !NO_BOOTMEM
has been added to the -mm tree. Its filename is
mm-disable-deferred_struct_page_init-on-no_bootmem.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-disable-deferred_struct_page_init-on-no_bootmem.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-disable-deferred_struct_page_init-on-no_bootmem.patch
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------------------------------------------------------
From: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxxxxxx
Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/Kconfig~mm-disable-deferred_struct_page_init-on-no_bootmem mm/Kconfig
--- a/mm/Kconfig~mm-disable-deferred_struct_page_init-on-no_bootmem
+++ a/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
_
Patches currently in -mm which might be from gwshan@xxxxxxxxxxxxxxxxxx are
mm-disable-deferred_struct_page_init-on-no_bootmem.patch
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