On Wed, 2014-08-13 at 12:10 +0800, Zhang Zhen wrote: > Currently memory-hotplug has two limits: > 1. If the memory block is in ZONE_NORMAL, you can change it to > ZONE_MOVABLE, but this memory block must be adjacent to ZONE_MOVABLE. > 2. If the memory block is in ZONE_MOVABLE, you can change it to > ZONE_NORMAL, but this memory block must be adjacent to ZONE_NORMAL. > > With this patch, we can easy to know a memory block can be onlined to > which zone, and don't need to know the above two limits. > > Updated the related Documentation. > > Change v1 -> v2: > - optimize the implementation following Dave Hansen's suggestion > > Signed-off-by: Zhang Zhen <zhenzhang.zhang@xxxxxxxxxx> > --- > Documentation/ABI/testing/sysfs-devices-memory | 8 ++++ > Documentation/memory-hotplug.txt | 4 +- > drivers/base/memory.c | 62 ++++++++++++++++++++++++++ > include/linux/memory_hotplug.h | 1 + > mm/memory_hotplug.c | 2 +- > 5 files changed, 75 insertions(+), 2 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory > index 7405de2..2b2a1d7 100644 > --- a/Documentation/ABI/testing/sysfs-devices-memory > +++ b/Documentation/ABI/testing/sysfs-devices-memory > @@ -61,6 +61,14 @@ Users: hotplug memory remove tools > http://www.ibm.com/developerworks/wikis/display/LinuxP/powerpc-utils > > > +What: /sys/devices/system/memory/memoryX/zones_online_to I think this name is a bit confusing. How about "valid_online_types"? Thanks, -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>