Reimplement ceph_calc_pg_primary() in terms of ceph_calc_pg_acting()
and get rid of the now unused calc_pg_raw().
Signed-off-by: Ilya Dryomov <ilya.dryomov@xxxxxxxxxxx>
---
net/ceph/osdmap.c | 79 +++--------------------------------------------------
1 file changed, 4 insertions(+), 75 deletions(-)
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 8c596a13c60f..f0567d8ca683 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1449,71 +1449,6 @@ static int do_crush(struct ceph_osdmap *map, int ruleno, int x,
}
/*
- * Calculate raw osd vector for the given pgid. Return pointer to osd
- * array, or NULL on failure.
- */
-static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
- int *osds, int *num)
-{
- struct ceph_pg_mapping *pg;
- struct ceph_pg_pool_info *pool;
- int ruleno;
- int r;
- u32 pps;
-
- pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool);
- if (!pool)
- return NULL;
-
- /* pg_temp? */
- pgid.seed = ceph_stable_mod(pgid.seed, pool->pg_num,
- pool->pg_num_mask);
- pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
- if (pg) {
- *num = pg->pg_temp.len;
- return pg->pg_temp.osds;
- }
-
- /* crush */
- ruleno = crush_find_rule(osdmap->crush, pool->crush_ruleset,
- pool->type, pool->size);
- if (ruleno < 0) {
- pr_err("no crush rule pool %lld ruleset %d type %d size %d\n",
- pgid.pool, pool->crush_ruleset, pool->type,
- pool->size);
- return NULL;
- }
-
- if (pool->flags & CEPH_POOL_FLAG_HASHPSPOOL) {
- /* hash pool id and seed sothat pool PGs do not overlap */
- pps = crush_hash32_2(CRUSH_HASH_RJENKINS1,
- ceph_stable_mod(pgid.seed, pool->pgp_num,
- pool->pgp_num_mask),
- pgid.pool);
- } else {
- /*
- * legacy ehavior: add ps and pool together. this is
- * not a great approach because the PGs from each pool
- * will overlap on top of each other: 0.5 == 1.4 ==
- * 2.3 == ...
- */
- pps = ceph_stable_mod(pgid.seed, pool->pgp_num,
- pool->pgp_num_mask) +
- (unsigned)pgid.pool;
- }
- r = do_crush(osdmap, ruleno, pps, osds, min_t(int, pool->size, *num),
- osdmap->osd_weight, osdmap->max_osd);
- if (r < 0) {
- pr_err("error %d from crush rule: pool %lld ruleset %d type %d"
- " size %d\n", r, pgid.pool, pool->crush_ruleset,
- pool->type, pool->size);
- return NULL;
- }
- *num = r;
- return osds;
-}
-
-/*
* Calculate raw (crush) set for given pgid.
*
* Return raw set length, or error.
@@ -1769,17 +1704,11 @@ int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
*/
int ceph_calc_pg_primary(struct ceph_osdmap *osdmap, struct ceph_pg pgid)
{
- int rawosds[CEPH_PG_MAX_SIZE], *osds;
- int i, num = CEPH_PG_MAX_SIZE;
+ int osds[CEPH_PG_MAX_SIZE];
+ int primary;
- osds = calc_pg_raw(osdmap, pgid, rawosds, &num);
- if (!osds)
- return -1;
+ ceph_calc_pg_acting(osdmap, pgid, osds, &primary);
- /* primary is first up osd */
- for (i = 0; i < num; i++)
- if (ceph_osd_is_up(osdmap, osds[i]))
- return osds[i];
- return -1;
+ return primary;
}
EXPORT_SYMBOL(ceph_calc_pg_primary);
--
1.7.10.4
--
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