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