mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2024-12-29 17:22:07 +00:00
18c8986d93
Convert internal parts of the provided buffer ring managment to the region API. It's the last non-region mapped ring we have, so it also kills a bunch of now unused memmap.c helpers. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/6c40cf7beaa648558acd4d84bc0fb3279a35d74b.1732886067.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#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
|