1 #ifndef _FS_CEPH_MSGPOOL
2 #define _FS_CEPH_MSGPOOL
7 * we use memory pools for preallocating messages we may receive, to
8 * avoid unexpected OOM conditions.
12 int front_len
; /* preallocated payload size */
13 struct list_head msgs
; /* msgs in the pool; each has 1 ref */
14 int num
, min
; /* cur, min # msgs in the pool */
16 wait_queue_head_t wait
;
19 extern int ceph_msgpool_init(struct ceph_msgpool
*pool
,
20 int front_len
, int size
, bool blocking
);
21 extern void ceph_msgpool_destroy(struct ceph_msgpool
*pool
);
22 extern int ceph_msgpool_resv(struct ceph_msgpool
*, int delta
);
23 extern struct ceph_msg
*ceph_msgpool_get(struct ceph_msgpool
*,
25 extern void ceph_msgpool_put(struct ceph_msgpool
*, struct ceph_msg
*);