1#ifndef _FS_CEPH_MSGPOOL
2#define _FS_CEPH_MSGPOOL
3
4#include <linux/mempool.h>
5#include "messenger.h"
6
7/*
8 * we use memory pools for preallocating messages we may receive, to
9 * avoid unexpected OOM conditions.
10 */
11struct ceph_msgpool {
12	const char *name;
13	mempool_t *pool;
14	int front_len;          /* preallocated payload size */
15};
16
17extern int ceph_msgpool_init(struct ceph_msgpool *pool,
18			     int front_len, int size, bool blocking,
19			     const char *name);
20extern void ceph_msgpool_destroy(struct ceph_msgpool *pool);
21extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *,
22					 int front_len);
23extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *);
24
25#endif
26