xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

libceph: calculate placement based on the internal data types

Browse Source 
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>
This commit is contained in:
Sage Weil
2013-02-25 16:13:08 -08:00
parent 4f6a7e5ee1
commit 2169aea649
5 changed files with 15 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
net/ceph/osdmap.c
View File

@@ -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);