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-rw-r--r--include/linux/mman.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/mman.h b/include/linux/mman.h
index dc7048824be8..ec5e7f606e43 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -124,6 +124,21 @@ static inline bool arch_validate_flags(unsigned long flags)
#define arch_validate_flags arch_validate_flags
#endif
+#ifndef arch_validate_mmap_prot
+/*
+ * This is called from mmap(), which ignores unknown prot bits so the default
+ * is to accept anything.
+ *
+ * Returns true if the prot flags are valid
+ */
+static inline bool arch_validate_mmap_prot(unsigned long prot,
+ unsigned long addr)
+{
+ return true;
+}
+#define arch_validate_mmap_prot arch_validate_mmap_prot
+#endif
+
/*
* Optimisation macro. It is equivalent to:
* (x & bit1) ? bit2 : 0