1 files changed, 36 insertions, 0 deletions
diff --git a/io_uring/memmap.h b/io_uring/memmap.h
new file mode 100644
index 000000000000..c898dcba2b4e
--- /dev/null
+++ b/io_uring/memmap.h
@@ -0,0 +1,36 @@
+#ifndef IO_URING_MEMMAP_H
+#define IO_URING_MEMMAP_H
+
+#define IORING_MAP_OFF_PARAM_REGION		0x20000000ULL
+
+struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages);
+
+#ifndef CONFIG_MMU
+unsigned int io_uring_nommu_mmap_capabilities(struct file *file);
+#endif
+unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr,
+					 unsigned long len, unsigned long pgoff,
+					 unsigned long flags);
+int io_uring_mmap(struct file *file, struct vm_area_struct *vma);
+
+void io_free_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr);
+int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr,
+		     struct io_uring_region_desc *reg,
+		     unsigned long mmap_offset);
+
+int io_create_region_mmap_safe(struct io_ring_ctx *ctx,
+				struct io_mapped_region *mr,
+				struct io_uring_region_desc *reg,
+				unsigned long mmap_offset);
+
+static inline void *io_region_get_ptr(struct io_mapped_region *mr)
+{
+	return mr->ptr;
+}
+
+static inline bool io_region_is_set(struct io_mapped_region *mr)
+{
+	return !!mr->nr_pages;
+}
+
+#endif