tools/testing/vma: add missing stub

vm_flags_reset() is not available in the userland VMA tests, so add a stub
which const-casts vma->vm_flags and avoids the upcoming removal of the
vma->__vm_flags field.

Link: https://lkml.kernel.org/r/4aff8bf7-d367-4ba3-90ad-13eef7a063fa@lucifer.local
Fixes: c5c67c1de357 ("tools/testing/vma: eliminate dependency on vma->__vm_flags")
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h
index be99056c5d569114e7d017151ef61a880482f5b2..8c2ac301a00e308f103fc0d52d5edab0b95fcf4f 100644 (file)
--- a/tools/testing/vma/vma_internal.h
+++ b/tools/testing/vma/vma_internal.h
@@ -1549,4 +1549,11 @@ static inline int do_munmap(struct mm_struct *, unsigned long, size_t,
        return 0;
 }
 
+static inline void vm_flags_reset(struct vm_area_struct *vma, vm_flags_t flags)
+{
+       vm_flags_t *dst = (vm_flags_t *)(&vma->vm_flags);
+
+       *dst = flags;
+}
+
 #endif /* __MM_VMA_INTERNAL_H */