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 _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
