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-rw-r--r--kernel/cpuset.c25
1 files changed, 15 insertions, 10 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index f513dd937eee..3ea63da11d71 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -799,18 +799,23 @@ static int update_nodemask(struct cpuset *cs, char *buf)
799 trialcs = *cs; 799 trialcs = *cs;
800 retval = nodelist_parse(buf, trialcs.mems_allowed); 800 retval = nodelist_parse(buf, trialcs.mems_allowed);
801 if (retval < 0) 801 if (retval < 0)
802 return retval; 802 goto done;
803 nodes_and(trialcs.mems_allowed, trialcs.mems_allowed, node_online_map); 803 nodes_and(trialcs.mems_allowed, trialcs.mems_allowed, node_online_map);
804 if (nodes_empty(trialcs.mems_allowed)) 804 if (nodes_empty(trialcs.mems_allowed)) {
805 return -ENOSPC; 805 retval = -ENOSPC;
806 retval = validate_change(cs, &trialcs); 806 goto done;
807 if (retval == 0) {
808 down(&callback_sem);
809 cs->mems_allowed = trialcs.mems_allowed;
810 atomic_inc(&cpuset_mems_generation);
811 cs->mems_generation = atomic_read(&cpuset_mems_generation);
812 up(&callback_sem);
813 } 807 }
808 retval = validate_change(cs, &trialcs);
809 if (retval < 0)
810 goto done;
811
812 down(&callback_sem);
813 cs->mems_allowed = trialcs.mems_allowed;
814 atomic_inc(&cpuset_mems_generation);
815 cs->mems_generation = atomic_read(&cpuset_mems_generation);
816 up(&callback_sem);
817
818done:
814 return retval; 819 return retval;
815} 820}
816 821