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 */ 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 }; 17 18 extern int ceph_msgpool_init(struct ceph_msgpool *pool, int type, 19 int front_len, int size, bool blocking, 20 const char *name); 21 extern void ceph_msgpool_destroy(struct ceph_msgpool *pool); 22 extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *, 23 int front_len); 24 extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *); 25 26 #endif 27