diff options
| author | Sage Weil <sage@newdream.net> | 2009-11-07 20:18:22 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2009-11-07 20:18:22 -0800 |
| commit | fb690390e305ea51e1883b105c7d3c52d7100ba5 (patch) | |
| tree | c099a71133225b1d22bba976e93dc6ab92a08986 /fs/ceph/crush/crush.h | |
| parent | 1654dd0cf5ee1827322aca156af7d96d757201c7 (diff) | |
ceph: make CRUSH hash function a bucket property
Make the integer hash function a property of the bucket it is used on. This
allows us to gracefully add support for new hash functions without starting
from scatch.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph/crush/crush.h')
| -rw-r--r-- | fs/ceph/crush/crush.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ceph/crush/crush.h b/fs/ceph/crush/crush.h index 92c6b3c3a57..dcd7e752370 100644 --- a/fs/ceph/crush/crush.h +++ b/fs/ceph/crush/crush.h @@ -102,7 +102,8 @@ extern const char *crush_bucket_alg_name(int alg); struct crush_bucket { __s32 id; /* this'll be negative */ __u16 type; /* non-zero; type=0 is reserved for devices */ - __u16 alg; /* one of CRUSH_BUCKET_* */ + __u8 alg; /* one of CRUSH_BUCKET_* */ + __u8 hash; /* which hash function to use, CRUSH_HASH_* */ __u32 weight; /* 16-bit fixed point */ __u32 size; /* num items */ __s32 *items; |