korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-23 20:24:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

cgroup: return early if it is already on preloaded list

Browse Source 
If a cset is already on preloaded list, this means we have already setup
this cset properly for migration.

This patch just relocates the root cgrp lookup which isn't used anyway
when the cset is already on the preloaded list.

[tj@kernel.org: rephrase the commit log]

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Wei Yang 2021-12-14 00:46:07 +00:00 committed by Tejun Heo
parent 1f1562fcd0
commit 1815775e74
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/cgroup/cgroup.c
View File

@ -2650,11 +2650,11 @@ void cgroup_migrate_add_src(struct css_set *src_cset,
if (src_cset->dead)
return;
src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root);
if (!list_empty(&src_cset->mg_preload_node))
return;
src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root);
WARN_ON(src_cset->mg_src_cgrp);
WARN_ON(src_cset->mg_dst_cgrp);
WARN_ON(!list_empty(&src_cset->mg_tasks));