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authorSage Weil <sage@inktank.com>2013-02-25 16:13:08 -0800
committerSage Weil <sage@inktank.com>2013-02-26 15:02:37 -0800
commit2169aea649c08374bec7d220a3b8f64712275356 (patch)
tree8a287c8239a5e1fc47afae4fbec530a467825706 /net/ceph/osdmap.c
parent4f6a7e5ee1393ec4b243b39dac9f36992d161540 (diff)
downloadlinux-2169aea649c08374bec7d220a3b8f64712275356.tar.gz
libceph: calculate placement based on the internal data types
Instead of using the old ceph_object_layout struct, update our internal ceph_calc_object_layout method to use the ceph_pg type. This allows us to pass the full 32-bit precision of the pgid.seed to the callers. It also allows some callers to avoid reaching into the request structures for the struct ceph_object_layout fields. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'net/ceph/osdmap.c')
-rw-r--r--net/ceph/osdmap.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index 911919320d2..37847164450 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -1095,32 +1095,24 @@ 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_object_layout *ol,
+int ceph_calc_object_layout(struct ceph_pg *pg,
const char *oid,
struct ceph_file_layout *fl,
struct ceph_osdmap *osdmap)
{
unsigned int num, num_mask;
- struct ceph_pg pgid;
struct ceph_pg_pool_info *pool;
BUG_ON(!osdmap);
-
- pgid.pool = le32_to_cpu(fl->fl_pg_pool);
- pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool);
+ pg->pool = le32_to_cpu(fl->fl_pg_pool);
+ pool = __lookup_pg_pool(&osdmap->pg_pools, pg->pool);
if (!pool)
return -EIO;
- pgid.seed = ceph_str_hash(pool->object_hash, oid, strlen(oid));
+ pg->seed = ceph_str_hash(pool->object_hash, oid, strlen(oid));
num = pool->pg_num;
num_mask = pool->pg_num_mask;
- dout("calc_object_layout '%s' pgid %lld.%x\n", oid, pgid.pool,
- pgid.seed);
-
- ol->ol_pgid.ps = cpu_to_le16(pgid.seed);
- ol->ol_pgid.pool = fl->fl_pg_pool;
- ol->ol_pgid.preferred = cpu_to_le16(-1);
- ol->ol_stripe_unit = fl->fl_object_stripe_unit;
+ dout("calc_object_layout '%s' pgid %lld.%x\n", oid, pg->pool, pg->seed);
return 0;
}
EXPORT_SYMBOL(ceph_calc_object_layout);