diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2014-06-05 01:07:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-05 01:54:03 +0200 |
| commit | dc6f6c97f1d3d58fef81f0f9db0c7d068b2cf392 (patch) | |
| tree | 14b7ab2ab8060b41a7e262ea36b0dee1b2809e30 /init | |
| parent | memcg: optimize the "Search everything else" loop in mm_update_next_owner() (diff) | |
| download | linux-dc6f6c97f1d3d58fef81f0f9db0c7d068b2cf392.tar.xz linux-dc6f6c97f1d3d58fef81f0f9db0c7d068b2cf392.zip | |
memcg: kill start_kernel()->mm_init_owner(&init_mm)
Remove start_kernel()->mm_init_owner(&init_mm, &init_task).
This doesn't really hurt but unnecessary and misleading. init_task is the
"swapper" thread == current, its ->mm is always NULL. And init_mm can
only be used as ->active_mm, not as ->mm.
mm_init_owner() has a single caller with this patch, perhaps it should
die. mm_init() can initialize ->owner under #ifdef.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Peter Chiang <pchiang@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index 48655ceb66f4..e08c0b2065a1 100644 --- a/init/main.c +++ b/init/main.c @@ -507,7 +507,6 @@ asmlinkage __visible void __init start_kernel(void) page_address_init(); pr_notice("%s", linux_banner); setup_arch(&command_line); - mm_init_owner(&init_mm, &init_task); mm_init_cpumask(&init_mm); setup_command_line(command_line); setup_nr_cpu_ids(); |