On 2015/06/09 19:09, Xishi Qiu wrote:
On 2015/6/9 15:06, Kamezawa Hiroyuki wrote:
On 2015/06/04 22:02, Xishi Qiu wrote:
Add a new interface in path /proc/sys/vm/mirrorable. When set to 1, it means
we should allocate mirrored memory for both user and kernel processes.
Signed-off-by: Xishi Qiu <qiuxishi@xxxxxxxxxx>
I can't see why do we need this switch. If this is set, all GFP_HIGHUSER will use
mirrored memory ?
Or will you add special MMAP/madvise flag to use mirrored memory ?
Hi Kame,
Yes,
MMAP/madvise
-> add VM_MIRROR
-> add GFP_MIRROR
-> use MIGRATE_MIRROR list to alloc mirrored pages
So user can use mirrored memory. What do you think?
I see. please explain it (your final plan) in patch description or in cover page of patches.
Thanks,
-Kame
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