Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef __FS_CEPH_BUFFER_H
2#define __FS_CEPH_BUFFER_H
3
4#include <linux/kref.h>
5#include <linux/mm.h>
6#include <linux/vmalloc.h>
7#include <linux/types.h>
8#include <linux/uio.h>
9
10/*
11 * a simple reference counted buffer.
12 *
13 * use kmalloc for small sizes (<= one page), vmalloc for larger
14 * sizes.
15 */
16struct ceph_buffer {
17 struct kref kref;
18 struct kvec vec;
19 size_t alloc_len;
20};
21
22extern struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp);
23extern void ceph_buffer_release(struct kref *kref);
24
25static inline struct ceph_buffer *ceph_buffer_get(struct ceph_buffer *b)
26{
27 kref_get(&b->kref);
28 return b;
29}
30
31static inline void ceph_buffer_put(struct ceph_buffer *b)
32{
33 kref_put(&b->kref, ceph_buffer_release);
34}
35
36extern int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end);
37
38#endif