linux/include/media/frame_vector.h

// SPDX-License-Identifier: GPL-2.0
#ifndef _MEDIA_FRAME_VECTOR_H
#define _MEDIA_FRAME_VECTOR_H

/* Container for pinned pfns / pages in frame_vector.c */
struct frame_vector { … };

struct frame_vector *frame_vector_create(unsigned int nr_frames);
void frame_vector_destroy(struct frame_vector *vec);
int get_vaddr_frames(unsigned long start, unsigned int nr_pfns,
		     bool write, struct frame_vector *vec);
void put_vaddr_frames(struct frame_vector *vec);
int frame_vector_to_pages(struct frame_vector *vec);
void frame_vector_to_pfns(struct frame_vector *vec);

static inline unsigned int frame_vector_count(struct frame_vector *vec)
{ … }

static inline struct page **frame_vector_pages(struct frame_vector *vec)
{ … }

static inline unsigned long *frame_vector_pfns(struct frame_vector *vec)
{ … }

#endif /* _MEDIA_FRAME_VECTOR_H */