diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 3c81803b00a3..be0ee11fa0d9 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -187,6 +187,7 @@ config MEMORY_HOTPLUG bool "Allow for memory hot-add" depends on SPARSEMEM || X86_64_ACPI_NUMA depends on ARCH_ENABLE_MEMORY_HOTPLUG + depends on !KASAN config MEMORY_HOTPLUG_SPARSE def_bool y @@ -261,7 +262,14 @@ config COMPACTION select MIGRATION depends on MMU help - Allows the compaction of memory for the allocation of huge pages. + Compaction is the only memory management component to form + high order (larger physically contiguous) memory blocks + reliably. The page allocator relies on compaction heavily and + the lack of the feature can lead to unexpected OOM killer + invocations for high order memory requests. You shouldn't + disable this option unless there really is a strong reason for + it and then we would be really interested to hear about that at + linux-mm@kvack.org. # # support for page migration @@ -681,7 +689,7 @@ config IDLE_PAGE_TRACKING See Documentation/vm/idle_page_tracking.txt for more details. config ZONE_DEVICE - bool "Device memory (pmem, etc...) hotplug support" if EXPERT + bool "Device memory (pmem, etc...) hotplug support" depends on MEMORY_HOTPLUG depends on MEMORY_HOTREMOVE depends on SPARSEMEM_VMEMMAP |
