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Subject[PATCH 1/1] 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>
---
init/main.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/init/main.c b/init/main.c
index 3815895..17090bb 100644
--- a/init/main.c
+++ b/init/main.c
@@ -507,7 +507,6 @@ asmlinkage 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();
--
1.5.5.1



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