/* Find and cancel locally locks matched by inode @bits & @mode in the resource
* found by @fid. Found locks are added into @cancel list. Returns the amount of
* locks added to @cancels list. */
int mdc_resource_get_unused(struct obd_export *exp, const struct lu_fid *fid,
struct list_head *cancels, enum ldlm_mode mode,
__u64 bits)
{
struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
union ldlm_policy_data policy = { {0} };
struct ldlm_res_id res_id;
struct ldlm_resource *res;
int count;
ENTRY;
/* Return, i.e. cancel nothing, only if ELC is supported (flag in
* export) but disabled through procfs (flag in NS).
*
* This distinguishes from a case when ELC is not supported originally,
* when we still want to cancel locks in advance and just cancel them
* locally, without sending any RPC. */
if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
RETURN(0);
fid_build_reg_res_name(fid, &res_id);
res = ldlm_resource_get(exp->exp_obd->obd_namespace,
NULL, &res_id, 0, 0);
if (IS_ERR(res))
RETURN(0);
LDLM_RESOURCE_ADDREF(res);
/* Initialize ibits lock policy. */
policy.l_inodebits.bits = bits;
count = ldlm_cancel_resource_local(res, cancels, &policy,
mode, 0, 0, NULL);
LDLM_RESOURCE_DELREF(res);
ldlm_resource_putref(res);
RETURN(count);
}
/* Find and cancel locally locks matched by inode @bits & @mode in the resource
* found by @fid. Found locks are added into @cancel list. Returns the amount of
* locks added to @cancels list. */
int mdc_resource_get_unused(struct obd_export *exp, struct lu_fid *fid,
cfs_list_t *cancels, ldlm_mode_t mode,
__u64 bits)
{
ldlm_policy_data_t policy = {{0}};
struct ldlm_res_id res_id;
struct ldlm_resource *res;
int count;
ENTRY;
fid_build_reg_res_name(fid, &res_id);
res = ldlm_resource_get(exp->exp_obd->obd_namespace,
NULL, &res_id, 0, 0);
if (res == NULL)
RETURN(0);
LDLM_RESOURCE_ADDREF(res);
/* Initialize ibits lock policy. */
policy.l_inodebits.bits = bits;
count = ldlm_cancel_resource_local(res, cancels, &policy,
mode, 0, 0, NULL);
LDLM_RESOURCE_DELREF(res);
ldlm_resource_putref(res);
RETURN(count);
}
/**
* Implementation of struct cl_object_operations::coo_req_attr_set() for osc
* layer. osc is responsible for struct obdo::o_id and struct obdo::o_seq
* fields.
*/
static void osc_req_attr_set(const struct lu_env *env, struct cl_object *obj,
struct cl_req_attr *attr)
{
struct lov_oinfo *oinfo;
struct obdo *oa;
struct ost_lvb *lvb;
u64 flags = attr->cra_flags;
oinfo = cl2osc(obj)->oo_oinfo;
lvb = &oinfo->loi_lvb;
oa = attr->cra_oa;
if ((flags & OBD_MD_FLMTIME) != 0) {
oa->o_mtime = lvb->lvb_mtime;
oa->o_valid |= OBD_MD_FLMTIME;
}
if ((flags & OBD_MD_FLATIME) != 0) {
oa->o_atime = lvb->lvb_atime;
oa->o_valid |= OBD_MD_FLATIME;
}
if ((flags & OBD_MD_FLCTIME) != 0) {
oa->o_ctime = lvb->lvb_ctime;
oa->o_valid |= OBD_MD_FLCTIME;
}
if (flags & OBD_MD_FLGROUP) {
ostid_set_seq(&oa->o_oi, ostid_seq(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLGROUP;
}
if (flags & OBD_MD_FLID) {
ostid_set_id(&oa->o_oi, ostid_id(&oinfo->loi_oi));
oa->o_valid |= OBD_MD_FLID;
}
if (flags & OBD_MD_FLHANDLE) {
struct ldlm_lock *lock;
struct osc_page *opg;
opg = osc_cl_page_osc(attr->cra_page, cl2osc(obj));
lock = osc_dlmlock_at_pgoff(env, cl2osc(obj), osc_index(opg),
OSC_DAP_FL_TEST_LOCK | OSC_DAP_FL_CANCELING);
if (lock == NULL && !opg->ops_srvlock) {
struct ldlm_resource *res;
struct ldlm_res_id *resname;
CL_PAGE_DEBUG(D_ERROR, env, attr->cra_page,
"uncovered page!\n");
resname = &osc_env_info(env)->oti_resname;
ostid_build_res_name(&oinfo->loi_oi, resname);
res = ldlm_resource_get(
osc_export(cl2osc(obj))->exp_obd->obd_namespace,
NULL, resname, LDLM_EXTENT, 0);
ldlm_resource_dump(D_ERROR, res);
libcfs_debug_dumpstack(NULL);
LBUG();
}
/* check for lockless io. */
if (lock != NULL) {
oa->o_handle = lock->l_remote_handle;
oa->o_valid |= OBD_MD_FLHANDLE;
LDLM_LOCK_PUT(lock);
}
}
}
