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- #ifndef _FS_CEPH_MSGPOOL
- #define _FS_CEPH_MSGPOOL
- #include "messenger.h"
- /*
- * we use memory pools for preallocating messages we may receive, to
- * avoid unexpected OOM conditions.
- */
- struct ceph_msgpool {
- spinlock_t lock;
- int front_len; /* preallocated payload size */
- struct list_head msgs; /* msgs in the pool; each has 1 ref */
- int num, min; /* cur, min # msgs in the pool */
- bool blocking;
- wait_queue_head_t wait;
- };
- extern int ceph_msgpool_init(struct ceph_msgpool *pool,
- int front_len, int size, bool blocking);
- extern void ceph_msgpool_destroy(struct ceph_msgpool *pool);
- extern int ceph_msgpool_resv(struct ceph_msgpool *, int delta);
- extern struct ceph_msg *ceph_msgpool_get(struct ceph_msgpool *,
- int front_len);
- extern void ceph_msgpool_put(struct ceph_msgpool *, struct ceph_msg *);
- #endif
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