linux/include/linux/ceph/buffer.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __FS_CEPH_BUFFER_H
#define __FS_CEPH_BUFFER_H

#include <linux/kref.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/types.h>
#include <linux/uio.h>

/*
 * a simple reference counted buffer.
 *
 * use kmalloc for smaller sizes, vmalloc for larger sizes.
 */
struct ceph_buffer { … };

extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
extern void ceph_buffer_release(struct kref *kref);

static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
{ … }

static inline void ceph_buffer_put(struct ceph_buffer *b)
{ … }

extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);

#endif