1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _FS_CEPH_MSGPOOL |
3 | #define _FS_CEPH_MSGPOOL |
4 | |
5 | #include <linux/mempool.h> |
6 | |
7 | /* |
8 | * we use memory pools for preallocating messages we may receive, to |
9 | * avoid unexpected OOM conditions. |
10 | */ |
11 | struct ceph_msgpool { |
12 | const char *name; |
13 | mempool_t *pool; |
14 | int type; /* preallocated message type */ |
15 | int front_len; /* preallocated payload size */ |
16 | int max_data_items; |
17 | }; |
18 | |
19 | int ceph_msgpool_init(struct ceph_msgpool *pool, int type, |
20 | int front_len, int max_data_items, int size, |
21 | const char *name); |
22 | extern void ceph_msgpool_destroy(struct ceph_msgpool *pool); |
23 | struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *pool, int front_len, |
24 | int max_data_items); |
25 | extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *); |
26 | |
27 | #endif |
28 | |