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-rw-r--r--sys/vm/vm_swap.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/vm/vm_swap.c b/sys/vm/vm_swap.c
index f968838..057a85d 100644
--- a/sys/vm/vm_swap.c
+++ b/sys/vm/vm_swap.c
@@ -433,6 +433,14 @@ swapoff(td, uap)
error = EINVAL;
goto done;
found:
+#ifdef MAC
+ (void) vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
+ error = mac_check_system_swapoff(td->td_ucred, vp);
+ (void) VOP_UNLOCK(vp, 0, td);
+ if (error != 0)
+ goto done;
+#endif
+
nblks = sp->sw_nblks;
/*
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