1 #ifndef IO_URING_MEMMAP_H 2 #define IO_URING_MEMMAP_H 3 4 #define IORING_MAP_OFF_PARAM_REGION 0x20000000ULL 5 6 struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages); 7 8 #ifndef CONFIG_MMU 9 unsigned int io_uring_nommu_mmap_capabilities(struct file *file); 10 #endif 11 unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr, 12 unsigned long len, unsigned long pgoff, 13 unsigned long flags); 14 int io_uring_mmap(struct file *file, struct vm_area_struct *vma); 15 16 void io_free_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr); 17 int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr, 18 struct io_uring_region_desc *reg, 19 unsigned long mmap_offset); 20 21 int io_create_region_mmap_safe(struct io_ring_ctx *ctx, 22 struct io_mapped_region *mr, 23 struct io_uring_region_desc *reg, 24 unsigned long mmap_offset); 25 26 static inline void *io_region_get_ptr(struct io_mapped_region *mr) 27 { 28 return mr->ptr; 29 } 30 31 static inline bool io_region_is_set(struct io_mapped_region *mr) 32 { 33 return !!mr->nr_pages; 34 } 35 36 #endif 37