On Wed 29-11-17 10:22:34, Michal Hocko wrote: > What about this on top. I haven't tested this yet though.
OK, it seem to work: root@test1:~# echo 1 > /proc/sys/vm/nr_hugepages root@test1:~# echo 1 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_overcommit_hugepages root@test1:~# grep . /sys/devices/system/node/node*/hugepages/hugepages-2048kB/* /sys/devices/system/node/node0/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages:0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/surplus_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/free_hugepages:1 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages:1 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/surplus_hugepages:0 # mmap 2 huge pages root@test1:~# grep . /sys/devices/system/node/node*/hugepages/hugepages-2048kB/* /sys/devices/system/node/node0/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages:0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/surplus_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages:2 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/surplus_hugepages:1 root@test1:~# migratepages $(pidof map_hugetlb) 1 0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages:2 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/surplus_hugepages:1 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/surplus_hugepages:0 and exit the mmap root@test1:~# grep . /sys/devices/system/node/node*/hugepages/hugepages-2048kB/* /sys/devices/system/node/node0/hugepages/hugepages-2048kB/free_hugepages:1 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages:1 /sys/devices/system/node/node0/hugepages/hugepages-2048kB/surplus_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/free_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages:0 /sys/devices/system/node/node1/hugepages/hugepages-2048kB/surplus_hugepages:0 -- Michal Hocko SUSE Labs
