Commit 7c13cb64 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

libceph: replace ceph_calc_ceph_pg() with ceph_oloc_oid_to_pg() 



Switch ceph_calc_ceph_pg() to new oloc and oid abstractions and rename
it to ceph_oloc_oid_to_pg() to make its purpose more clear.

Signed-off-by: default avatarIlya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent 4295f221

fs/ceph/ioctl.c

+6 −2
Original line number Diff line number Diff line
@@ -183,6 +183,8 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) 
	struct ceph_inode_info *ci = ceph_inode(inode);

	struct ceph_osd_client *osdc =

		&ceph_sb_to_client(inode->i_sb)->client->osdc;

	struct ceph_object_locator oloc;

	struct ceph_object_id oid;

	u64 len = 1, olen;

	u64 tmp;

	struct ceph_pg pgid;
@@ -211,8 +213,10 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) 
	snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",

		 ceph_ino(inode), dl.object_no);



	r = ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,

				ceph_file_layout_pg_pool(ci->i_layout));

	oloc.pool = ceph_file_layout_pg_pool(ci->i_layout);

	ceph_oid_set_name(&oid, dl.object_name);



	r = ceph_oloc_oid_to_pg(osdc->osdmap, &oloc, &oid, &pgid);

	if (r < 0) {

		up_read(&osdc->map_sem);

		return r;

include/linux/ceph/osdmap.h

+5 −2
Original line number Diff line number Diff line
@@ -163,8 +163,11 @@ extern int ceph_calc_file_object_mapping(struct ceph_file_layout *layout, 
					 u64 *bno, u64 *oxoff, u64 *oxlen);



/* calculate mapping of object to a placement group */

extern int ceph_calc_ceph_pg(struct ceph_pg *pg, const char *oid,

			  struct ceph_osdmap *osdmap, uint64_t pool);

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);



extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap,

			       struct ceph_pg pgid,

			       int *acting);

net/ceph/osd_client.c

+2 −2
Original line number Diff line number Diff line
@@ -1269,8 +1269,8 @@ static int __map_request(struct ceph_osd_client *osdc, 
	bool was_paused;



	dout("map_request %p tid %lld\n", req, req->r_tid);

	err = ceph_calc_ceph_pg(&pgid, req->r_oid.name, osdc->osdmap,

				req->r_oloc.pool);

	err = ceph_oloc_oid_to_pg(osdc->osdmap, &req->r_oloc, &req->r_oid,

				  &pgid);

	if (err) {

		list_move(&req->r_req_lru_item, &osdc->req_notarget);

		return err;

net/ceph/osdmap.c

+17 −12
Original line number Diff line number Diff line
@@ -1090,25 +1090,30 @@ invalid: 
EXPORT_SYMBOL(ceph_calc_file_object_mapping);



/*

 * calculate an object layout (i.e. pgid) from an oid,

 * file_layout, and osdmap

 * 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.

 */

int ceph_calc_ceph_pg(struct ceph_pg *pg, const char *oid,

			struct ceph_osdmap *osdmap, uint64_t pool)

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)

{

	struct ceph_pg_pool_info *pool_info;

	struct ceph_pg_pool_info *pi;



	BUG_ON(!osdmap);

	pool_info = __lookup_pg_pool(&osdmap->pg_pools, pool);

	if (!pool_info)

	pi = __lookup_pg_pool(&osdmap->pg_pools, oloc->pool);

	if (!pi)

		return -EIO;

	pg->pool = pool;

	pg->seed = ceph_str_hash(pool_info->object_hash, oid, strlen(oid));



	dout("%s '%s' pgid %lld.%x\n", __func__, oid, pg->pool, pg->seed);

	pg_out->pool = oloc->pool;

	pg_out->seed = ceph_str_hash(pi->object_hash, oid->name,

				     oid->name_len);



	dout("%s '%.*s' pgid %llu.%x\n", __func__, oid->name_len, oid->name,

	     pg_out->pool, pg_out->seed);

	return 0;

}

EXPORT_SYMBOL(ceph_calc_ceph_pg);

EXPORT_SYMBOL(ceph_oloc_oid_to_pg);



static int crush_do_rule_ary(const struct crush_map *map, int ruleno, int x,

			     int *result, int result_max,

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