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authorTakashi Iwai2010-12-13 09:29:52 +0100
committerTakashi Iwai2010-12-13 09:29:52 +0100
commit354d14b3f53cc749c5d26d4ba7280d1e931d6bc4 (patch)
tree59b597e44902d8db8bde7deac1e7e707327c6fe6 /mm/mempolicy.c
parentALSA: aoa: Remove wrong i2c_set_clientdata in onyx_i2c_remove() (diff)
parentsound: don't use flush_scheduled_work() (diff)
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Merge branch 'topic/workq-update' into topic/misc
Diffstat (limited to 'mm/mempolicy.c')
-rw-r--r--mm/mempolicy.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 4a57f135b76e..11ff260fb282 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1307,15 +1307,18 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
goto out;
/* Find the mm_struct */
+ rcu_read_lock();
read_lock(&tasklist_lock);
task = pid ? find_task_by_vpid(pid) : current;
if (!task) {
read_unlock(&tasklist_lock);
+ rcu_read_unlock();
err = -ESRCH;
goto out;
}
mm = get_task_mm(task);
read_unlock(&tasklist_lock);
+ rcu_read_unlock();
err = -EINVAL;
if (!mm)