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linux-stable-rt/include/linux/ceph/ceph_hash.h

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ceph: clean up header guards Signed-off-by: Sage Weil <sage@newdream.net>
2010-07-07 23:38:17 +08:00
#ifndef FS_CEPH_HASH_H
#define FS_CEPH_HASH_H
ceph: make object hash a pg_pool property The object will be hashed to a placement seed (ps) based on the pg_pool's hash function. This allows new hashes to be introduced into an existing object store, or selection of a hash appropriate to the objects that will be stored in a particular pool. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-07 13:55:25 +08:00
#define CEPH_STR_HASH_LINUX 0x1 /* linux dcache hash */
#define CEPH_STR_HASH_RJENKINS 0x2 /* robert jenkins' */
extern unsigned ceph_str_hash_linux(const char *s, unsigned len);
extern unsigned ceph_str_hash_rjenkins(const char *s, unsigned len);
extern unsigned ceph_str_hash(int type, const char *s, unsigned len);
extern const char *ceph_str_hash_name(int type);
#endif