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Diffstat (limited to 'mm')
-rw-r--r--mm/mempolicy.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index c6c61ea6bb8..8924aaf4665 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1262,7 +1262,7 @@ asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len,
* @task != current]. It is the caller's responsibility to
* free the reference in these cases.
*/
-static struct mempolicy * get_vma_policy(struct task_struct *task,
+static struct mempolicy *get_vma_policy(struct task_struct *task,
struct vm_area_struct *vma, unsigned long addr)
{
struct mempolicy *pol = task->mempolicy;
@@ -1270,7 +1270,10 @@ static struct mempolicy * get_vma_policy(struct task_struct *task,
if (vma) {
if (vma->vm_ops && vma->vm_ops->get_policy) {
- pol = vma->vm_ops->get_policy(vma, addr);
+ struct mempolicy *vpol = vma->vm_ops->get_policy(vma,
+ addr);
+ if (vpol)
+ pol = vpol;
shared_pol = 1; /* if pol non-NULL, add ref below */
} else if (vma->vm_policy &&
vma->vm_policy->policy != MPOL_DEFAULT)