diff options
Diffstat (limited to 'include/linux/ceph/msgpool.h')
| -rw-r--r-- | include/linux/ceph/msgpool.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/ceph/msgpool.h b/include/linux/ceph/msgpool.h new file mode 100644 index 000000000..4b0d38960 --- /dev/null +++ b/include/linux/ceph/msgpool.h @@ -0,0 +1,26 @@ +#ifndef _FS_CEPH_MSGPOOL +#define _FS_CEPH_MSGPOOL + +#include <linux/mempool.h> +#include <linux/ceph/messenger.h> + +/* + * we use memory pools for preallocating messages we may receive, to + * avoid unexpected OOM conditions. + */ +struct ceph_msgpool { + const char *name; + mempool_t *pool; + int type; /* preallocated message type */ + int front_len; /* preallocated payload size */ +}; + +extern int ceph_msgpool_init(struct ceph_msgpool *pool, int type, + int front_len, int size, bool blocking, + const char *name); +extern void ceph_msgpool_destroy(struct ceph_msgpool *pool); +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 |