• Michal Hocko's avatar
    lib/show_mem.c: teach show_mem to work with the given nodemask · 9af744d7
    Michal Hocko authored
    show_mem() allows to filter out node specific data which is irrelevant
    to the allocation request via SHOW_MEM_FILTER_NODES.  The filtering is
    done in skip_free_areas_node which skips all nodes which are not in the
    mems_allowed of the current process.  This works most of the time as
    expected because the nodemask shouldn't be outside of the allocating
    task but there are some exceptions.  E.g.  memory hotplug might want to
    request allocations from outside of the allowed nodes (see
    new_node_page).
    
    Get rid of this hardcoded behavior and push the allocation mask down the
    show_mem path and use it instead of cpuset_current_mems_allowed.  NULL
    nodemask is interpreted as cpuset_current_mems_allowed.
    
    [akpm@linux-foundation.org: coding-style fixes]
    Link: http://lkml.kernel.org/r/20170117091543.25850-5-mhocko@kernel.org
    
    Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
    Acked-by: default avatarMel Gorman <mgorman@suse.de>
    Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
    Cc: Joh...
    9af744d7
show_mem.c 1.27 KB