libceph: rename ceph_oloc_oid_to_pg()

Rename ceph_oloc_oid_to_pg() to ceph_object_locator_to_pg().  Emphasise
that returned is raw PG and return -ENOENT instead of -EIO if the pool
doesn't exist.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index db29670..cca7fff 100644 (file)
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -215,7 +215,7 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
        oloc.pool = ceph_file_layout_pg_pool(ci->i_layout);
        ceph_oid_printf(&oid, "%s", dl.object_name);
 
-       r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid);
+       r = ceph_object_locator_to_pg(osdc->osdmap, &oid, &oloc, &pgid);
        if (r < 0) {
                up_read(&osdc->map_sem);
                return r;

diff --git a/include/linux/ceph/osdmap.h b/include/linux/ceph/osdmap.h
index ce7a41a..b70440c 100644 (file)
--- a/include/linux/ceph/osdmap.h
+++ b/include/linux/ceph/osdmap.h
@@ -213,11 +213,10 @@ extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
                                         u64 off, u64 len,
                                         u64 *bno, u64 *oxoff, u64 *oxlen);
 
-/* calculate mapping of object to a placement group */
-extern int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap,
-                              struct ceph_object_locator *oloc,
-                              struct ceph_object_id *oid,
-                              struct ceph_pg *pg_out);
+int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
+                             struct ceph_object_id *oid,
+                             struct ceph_object_locator *oloc,
+                             struct ceph_pg *raw_pgid);
 
 extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap,
                               struct ceph_pg pgid,

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 8256051..cb9f195 100644 (file)
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1324,8 +1324,8 @@ static int __calc_request_pg(struct ceph_osdmap *osdmap,
                /* !pi is caught in ceph_oloc_oid_to_pg() */
        }
 
-       return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc,
-                                  &req->r_target_oid, pg_out);
+       return ceph_object_locator_to_pg(osdmap, &req->r_target_oid,
+                                        &req->r_target_oloc, pg_out);
 }
 
 static void __enqueue_request(struct ceph_osd_request *req)

diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 9a0cc07..6267839 100644 (file)
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1545,30 +1545,31 @@ invalid:
 EXPORT_SYMBOL(ceph_calc_file_object_mapping);
 
 /*
- * Calculate mapping of a (oloc, oid) pair to a PG.  Should only be
- * called with target's (oloc, oid), since tiering isn't taken into
- * account.
+ * Map an object into a PG.
+ *
+ * Should only be called with target_oid and target_oloc (as opposed to
+ * base_oid and base_oloc), since tiering isn't taken into account.
  */
-int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap,
-                       struct ceph_object_locator *oloc,
-                       struct ceph_object_id *oid,
-                       struct ceph_pg *pg_out)
+int ceph_object_locator_to_pg(struct ceph_osdmap *osdmap,
+                             struct ceph_object_id *oid,
+                             struct ceph_object_locator *oloc,
+                             struct ceph_pg *raw_pgid)
 {
        struct ceph_pg_pool_info *pi;
 
-       pi = __lookup_pg_pool(&osdmap->pg_pools, oloc->pool);
+       pi = ceph_pg_pool_by_id(osdmap, oloc->pool);
        if (!pi)
-               return -EIO;
+               return -ENOENT;
 
-       pg_out->pool = oloc->pool;
-       pg_out->seed = ceph_str_hash(pi->object_hash, oid->name,
-                                    oid->name_len);
+       raw_pgid->pool = oloc->pool;
+       raw_pgid->seed = ceph_str_hash(pi->object_hash, oid->name,
+                                      oid->name_len);
 
-       dout("%s %*pE pgid %llu.%x\n", __func__, oid->name_len, oid->name,
-            pg_out->pool, pg_out->seed);
+       dout("%s %*pE -> raw_pgid %llu.%x\n", __func__, oid->name_len,
+            oid->name, raw_pgid->pool, raw_pgid->seed);
        return 0;
 }
-EXPORT_SYMBOL(ceph_oloc_oid_to_pg);
+EXPORT_SYMBOL(ceph_object_locator_to_pg);
 
 static int do_crush(struct ceph_osdmap *map, int ruleno, int x,
                    int *result, int result_max,