We can just use oldcs->mems_allowed.
Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
---
kernel/cpuset.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index d753837..dbef832 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1407,8 +1407,7 @@ static cpumask_var_t cpus_attach;
static void cpuset_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
{
- /* static bufs protected by cpuset_mutex */
- static nodemask_t cpuset_attach_nodemask_from;
+ /* static buf protected by cpuset_mutex */
static nodemask_t cpuset_attach_nodemask_to;
struct mm_struct *mm;
struct task_struct *task;
@@ -1442,13 +1441,12 @@ static void cpuset_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
* Change mm, possibly for multiple threads in a threadgroup. This is
* expensive and may sleep.
*/
- cpuset_attach_nodemask_from = oldcs->mems_allowed;
cpuset_attach_nodemask_to = cs->mems_allowed;
mm = get_task_mm(leader);
if (mm) {
mpol_rebind_mm(mm, &cpuset_attach_nodemask_to);
if (is_memory_migrate(cs))
- cpuset_migrate_mm(mm, &cpuset_attach_nodemask_from,
+ cpuset_migrate_mm(mm, &oldcs->mems_allowed,
&cpuset_attach_nodemask_to);
mmput(mm);
}
--
1.8.0.2
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