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libceph: primary_affinity infrastructure

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Add primary_affinity infrastructure.  primary_affinity values are
stored in an max_osd-sized array, hanging off ceph_osdmap, similar to
a osd_weight array.

Introduce {get,set}_primary_affinity() helpers, primarily to return
CEPH_OSD_DEFAULT_PRIMARY_AFFINITY when no affinity has been set and to
abstract out osd_primary_affinity array allocation and initialization.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2014-03-21 19:05:30 +02:00 • committed by Sage Weil
parent d286de796a
commit 2cfa34f2d6
4 changed files with 57 additions and 2 deletions
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3
include/linux/ceph/osdmap.h
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@ -88,6 +88,8 @@ struct ceph_osdmap {
struct rb_root pg_temp;
struct rb_root primary_temp;
u32 *osd_primary_affinity;
struct rb_root pg_pools;
u32 pool_max;
@ -134,6 +136,7 @@ static inline bool ceph_osdmap_flag(struct ceph_osdmap *map, int flag)
}
extern char *ceph_osdmap_state_str(char *str, int len, int state);
extern u32 ceph_get_primary_affinity(struct ceph_osdmap *map, int osd);
static inline struct ceph_entity_addr *ceph_osd_addr(struct ceph_osdmap *map,
int osd)