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authorMark Brown <broonie@linaro.org>2014-01-14 14:14:47 +0000
committerMark Brown <broonie@linaro.org>2014-01-14 14:14:47 +0000
commit13ea3300100ec3461560b1e061033cd167333a86 (patch)
treec60a016a06c488adada6959516e2a2de96d6d7d3 /kernel/cpuset.c
parentb7ed6b88b2a5e961eeb939ef637a3cbb435a23a7 (diff)
parent68e67d97e1f91ed11e041b67f3a1336f518c608f (diff)
Merge branch 'topic/rcar' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-rspi
Diffstat (limited to 'kernel/cpuset.c')
-rw-r--r--kernel/cpuset.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 6bf981e13c4..4772034b4b1 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1033,8 +1033,10 @@ static void cpuset_change_task_nodemask(struct task_struct *tsk,
need_loop = task_has_mempolicy(tsk) ||
!nodes_intersects(*newmems, tsk->mems_allowed);
- if (need_loop)
+ if (need_loop) {
+ local_irq_disable();
write_seqcount_begin(&tsk->mems_allowed_seq);
+ }
nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems);
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1);
@@ -1042,8 +1044,10 @@ static void cpuset_change_task_nodemask(struct task_struct *tsk,
mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP2);
tsk->mems_allowed = *newmems;
- if (need_loop)
+ if (need_loop) {
write_seqcount_end(&tsk->mems_allowed_seq);
+ local_irq_enable();
+ }
task_unlock(tsk);
}