Define and export function ceph_pg_pool_name_by_id() to supply
the name of a pg pool whose id is given. This will be used by
the next patch.
Signed-off-by: Alex Elder <elder@xxxxxxxxxxx>
---
include/linux/ceph/osdmap.h | 1 +
net/ceph/osdmap.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index e88a620..5ea57ba 100644
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -123,6 +123,7 @@ extern int ceph_calc_pg_acting(struct ceph_osdmap
*osdmap, struct ceph_pg pgid,
extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap,
struct ceph_pg pgid);
+extern const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64
id);
extern int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char
*name);
#endif
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index f552aa4..de73214 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -469,6 +469,22 @@ static struct ceph_pg_pool_info
*__lookup_pg_pool(struct rb_root *root, int id)
return NULL;
}
+const char *ceph_pg_pool_name_by_id(struct ceph_osdmap *map, u64 id)
+{
+ struct ceph_pg_pool_info *pi;
+
+ if (id == CEPH_NOPOOL)
+ return NULL;
+
+ if (WARN_ON_ONCE(id > (u64) INT_MAX))
+ return NULL;
+
+ pi = __lookup_pg_pool(&map->pg_pools, (int) id);
+
+ return pi ? pi->name : NULL;
+}
+EXPORT_SYMBOL(ceph_pg_pool_name_by_id);
+
int ceph_pg_poolid_by_name(struct ceph_osdmap *map, const char *name)
{
struct rb_node *rbp;
--
1.7.9.5
--
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