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authorWaiman Long <longman@redhat.com>2022-09-01 16:57:42 -0400
committerTejun Heo <tj@kernel.org>2022-09-04 10:47:28 -1000
commit74027a6535fdabef69c57234359d9fbdb4597398 (patch)
tree120e0ce8fe2709982ca10e1a9e77a30a792e0ed8 /kernel/cgroup
parent7476a636d3100120330145d6dc408cd279a31039 (diff)
downloadlinux-74027a6535fdabef69c57234359d9fbdb4597398.tar.bz2
cgroup/cpuset: Relocate a code block in validate_change()
This patch moves down the exclusive cpu and memory check in validate_change(). There is no functional change. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup')
-rw-r--r--kernel/cgroup/cpuset.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 15fcd2f86108..b0d921d03f62 100644
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -742,22 +742,6 @@ static int validate_change(struct cpuset *cur, struct cpuset *trial)
par = parent_cs(cur);
/*
- * If either I or some sibling (!= me) is exclusive, we can't
- * overlap
- */
- ret = -EINVAL;
- cpuset_for_each_child(c, css, par) {
- if ((is_cpu_exclusive(trial) || is_cpu_exclusive(c)) &&
- c != cur &&
- cpumask_intersects(trial->cpus_allowed, c->cpus_allowed))
- goto out;
- if ((is_mem_exclusive(trial) || is_mem_exclusive(c)) &&
- c != cur &&
- nodes_intersects(trial->mems_allowed, c->mems_allowed))
- goto out;
- }
-
- /*
* Cpusets with tasks - existing or newly being attached - can't
* be changed to have empty cpus_allowed or mems_allowed.
*/
@@ -781,6 +765,22 @@ static int validate_change(struct cpuset *cur, struct cpuset *trial)
trial->cpus_allowed))
goto out;
+ /*
+ * If either I or some sibling (!= me) is exclusive, we can't
+ * overlap
+ */
+ ret = -EINVAL;
+ cpuset_for_each_child(c, css, par) {
+ if ((is_cpu_exclusive(trial) || is_cpu_exclusive(c)) &&
+ c != cur &&
+ cpumask_intersects(trial->cpus_allowed, c->cpus_allowed))
+ goto out;
+ if ((is_mem_exclusive(trial) || is_mem_exclusive(c)) &&
+ c != cur &&
+ nodes_intersects(trial->mems_allowed, c->mems_allowed))
+ goto out;
+ }
+
ret = 0;
out:
rcu_read_unlock();