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-rw-r--r--include/linux/dax.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dax.h b/include/linux/dax.h
index b415e521528d..e9d57f680f50 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -36,4 +36,9 @@ static inline bool vma_is_dax(struct vm_area_struct *vma)
{
return vma->vm_file && IS_DAX(vma->vm_file->f_mapping->host);
}
+
+static inline bool dax_mapping(struct address_space *mapping)
+{
+ return mapping->host && IS_DAX(mapping->host);
+}
#endif