diff options
Diffstat (limited to 'io_uring/memmap.h')
| -rw-r--r-- | io_uring/memmap.h | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/io_uring/memmap.h b/io_uring/memmap.h index 5cec5b7ac49a..08419684e4bc 100644 --- a/io_uring/memmap.h +++ b/io_uring/memmap.h @@ -1,18 +1,12 @@ #ifndef IO_URING_MEMMAP_H #define IO_URING_MEMMAP_H -struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages); -void io_pages_free(struct page ***pages, int npages); -int io_uring_mmap_pages(struct io_ring_ctx *ctx, struct vm_area_struct *vma, - struct page **pages, int npages); +#define IORING_MAP_OFF_PARAM_REGION 0x20000000ULL +#define IORING_MAP_OFF_ZCRX_REGION 0x30000000ULL -void *io_pages_map(struct page ***out_pages, unsigned short *npages, - size_t size); -void io_pages_unmap(void *ptr, struct page ***pages, unsigned short *npages, - bool put_pages); +#define IORING_OFF_ZCRX_SHIFT 16 -void *__io_uaddr_map(struct page ***pages, unsigned short *npages, - unsigned long uaddr, size_t size); +struct page **io_pin_pages(unsigned long uaddr, unsigned long len, int *npages); #ifndef CONFIG_MMU unsigned int io_uring_nommu_mmap_capabilities(struct file *file); @@ -22,4 +16,24 @@ unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr, 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 |