From 6f428df47dae2c8ea31fd4c0c74a12a8a5ac2d1d Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 21 Jun 2017 17:27:18 +0200 Subject: libceph: pg_upmap[_items] infrastructure pg_temp and pg_upmap encodings are the same (PG -> array of osds), except for the incremental remove: it's an empty mapping in new_pg_temp for pg_temp and a separate old_pg_upmap set for pg_upmap. (This isn't to allow for empty pg_upmap mappings -- apparently, pg_temp just wasn't looked at as an example for pg_upmap encoding.) Reuse __decode_pg_temp() for decoding pg_upmap and new_pg_upmap. __decode_pg_temp() stores into pg_temp union member, but since pg_upmap union member is identical, reading through pg_upmap later is OK. Signed-off-by: Ilya Dryomov --- include/linux/ceph/osdmap.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h index fe6d189bdd30..c612cff81f5c 100644 --- a/include/linux/ceph/osdmap.h +++ b/include/linux/ceph/osdmap.h @@ -143,10 +143,14 @@ struct ceph_pg_mapping { struct { int len; int osds[]; - } pg_temp; + } pg_temp, pg_upmap; struct { int osd; } primary_temp; + struct { + int len; + int from_to[][2]; + } pg_upmap_items; }; }; @@ -165,6 +169,10 @@ struct ceph_osdmap { struct rb_root pg_temp; struct rb_root primary_temp; + /* remap (post-CRUSH, pre-up) */ + struct rb_root pg_upmap; /* PG := raw set */ + struct rb_root pg_upmap_items; /* from -> to within raw set */ + u32 *osd_primary_affinity; struct rb_root pg_pools; -- cgit v1.2.3