diff options
| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2016-05-27 17:27:49 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-27 17:49:37 -0400 |
| commit | 11e685672a0861ce136cc4e7f6fdd11e5390b1fa (patch) | |
| tree | 4850c18e2655f5f8395be6764e2924c08a91c733 /mm | |
| parent | 7cf7806ce1e30f1691cf340f70b807acbdf419ef (diff) | |
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')
| -rw-r--r-- | mm/Kconfig | 2 |
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 | |||
| 648 | bool "Defer initialisation of struct pages to kthreads" | 648 | bool "Defer initialisation of struct pages to kthreads" |
| 649 | default n | 649 | default n |
| 650 | depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT | 650 | depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT |
| 651 | depends on MEMORY_HOTPLUG | 651 | depends on NO_BOOTMEM && MEMORY_HOTPLUG |
| 652 | depends on !FLATMEM | 652 | depends on !FLATMEM |
| 653 | help | 653 | help |
| 654 | Ordinarily all struct pages are initialised during early boot in a | 654 | Ordinarily all struct pages are initialised during early boot in a |