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| author | Li Zefan <lizefan@huawei.com> | 2013-06-05 17:15:35 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-06-05 13:55:13 -0700 |
| commit | 67bd2c59850de20d0ecdc8084cbbfe34e53b6804 (patch) | |
| tree | 62c3d7d42c0b4d5a9ea5672458ddd9af3d2e8af3 | |
| parent | 40df2deb50570b288b7067b111af0aa9ca640e6f (diff) | |
| download | blackbird-op-linux-67bd2c59850de20d0ecdc8084cbbfe34e53b6804.tar.gz blackbird-op-linux-67bd2c59850de20d0ecdc8084cbbfe34e53b6804.zip | |
cpuset: remove unnecessary variable in cpuset_attach()
We can just use oldcs->mems_allowed.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
| -rw-r--r-- | kernel/cpuset.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index d753837cca33..dbef832e5e2d 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); } |
