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libceph: rename ceph_oloc_oid_to_pg()

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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>
This commit is contained in:
Ilya Dryomov 2016-04-28 16:07:22 +02:00
parent 985c167388
commit d9591f5e28
4 changed files with 23 additions and 23 deletions
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2
fs/ceph/ioctl.c
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@ -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;

9
include/linux/ceph/osdmap.h
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@ -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,

4
net/ceph/osd_client.c
View File

@ -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)

31
net/ceph/osdmap.c
View File

@ -1545,30 +1545,31 @@ int ceph_calc_file_object_mapping(struct ceph_file_layout *layout,
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,