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authorAlex Elder <elder@inktank.com>2013-03-01 18:00:15 -0600
committerSage Weil <sage@inktank.com>2013-05-01 21:16:17 -0700
commit41766f87f54cc8bef023b4b0550f48753959345a (patch)
tree58d11a1e3fcb0aef8d97b6cdc48bcf5811d32001 /net/ceph/osdmap.c
parentec02a2f2ffae13e038453ae89592a8c6210f7f4d (diff)
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libceph: rename ceph_calc_object_layout()
The purpose of ceph_calc_object_layout() is to fill in the pool number and seed for a ceph_pg structure provided, based on a given osd map and target object id. Currently that function takes a file layout parameter, but the only thing used out of that is its pool number. Change the function so it takes a pool number rather than the full file layout structure. Only update the ceph_pg if the pool is found in the osd map. Get rid of few useless lines of code from the function while there. Since the function now very clearly just fills in the ceph_pg structure it's provided, rename it ceph_calc_ceph_pg(). Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'net/ceph/osdmap.c')
-rw-r--r--net/ceph/osdmap.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 4543b9a..0989871 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1111,27 +1111,22 @@ EXPORT_SYMBOL(ceph_calc_file_object_mapping);
* calculate an object layout (i.e. pgid) from an oid,
* file_layout, and osdmap
*/
-int ceph_calc_object_layout(struct ceph_pg *pg,
- const char *oid,
- struct ceph_file_layout *fl,
- struct ceph_osdmap *osdmap)
+int ceph_calc_ceph_pg(struct ceph_pg *pg, const char *oid,
+ struct ceph_osdmap *osdmap, uint64_t pool)
{
- unsigned int num, num_mask;
- struct ceph_pg_pool_info *pool;
+ struct ceph_pg_pool_info *pool_info;
BUG_ON(!osdmap);
- pg->pool = le32_to_cpu(fl->fl_pg_pool);
- pool = __lookup_pg_pool(&osdmap->pg_pools, pg->pool);
- if (!pool)
+ pool_info = __lookup_pg_pool(&osdmap->pg_pools, pool);
+ if (!pool_info)
return -EIO;
- pg->seed = ceph_str_hash(pool->object_hash, oid, strlen(oid));
- num = pool->pg_num;
- num_mask = pool->pg_num_mask;
+ pg->pool = pool;
+ pg->seed = ceph_str_hash(pool_info->object_hash, oid, strlen(oid));
- dout("calc_object_layout '%s' pgid %lld.%x\n", oid, pg->pool, pg->seed);
+ dout("%s '%s' pgid %lld.%x\n", __func__, oid, pg->pool, pg->seed);
return 0;
}
-EXPORT_SYMBOL(ceph_calc_object_layout);
+EXPORT_SYMBOL(ceph_calc_ceph_pg);
/*
* Calculate raw osd vector for the given pgid. Return pointer to osd
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