* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
-static struct lustre_qunit_size *
-quota_create_lqs(unsigned long long lqs_key, struct lustre_quota_ctxt *qctxt)
+struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
+ struct lustre_quota_ctxt *qctxt,
+ int create)
{
- struct lustre_qunit_size *lqs = NULL;
+ struct lustre_qunit_size *lqs;
+ struct lustre_qunit_size *lqs2;
+ cfs_hash_t *hs = NULL;
int rc = 0;
+ cfs_spin_lock(&qctxt->lqc_lock);
+ if (qctxt->lqc_valid) {
+ LASSERT(qctxt->lqc_lqs_hash != NULL);
+ hs = cfs_hash_getref(qctxt->lqc_lqs_hash);
+ }
+ cfs_spin_unlock(&qctxt->lqc_lock);
+
+ if (hs == NULL) {
+ rc = -EBUSY;
+ goto out;
+ }
+
+ /* cfs_hash_lookup will +1 refcount for caller */
+ lqs = cfs_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
+ if (lqs != NULL) /* found */
+ goto out_put;
+
+ if (!create)
+ goto out_put;
+
OBD_ALLOC_PTR(lqs);
- if (!lqs)
- GOTO(out, rc = -ENOMEM);
+ if (!lqs) {
+ rc = -ENOMEM;
+ goto out_put;
+ }
lqs->lqs_key = lqs_key;
- spin_lock_init(&lqs->lqs_lock);
+ cfs_spin_lock_init(&lqs->lqs_lock);
+
lqs->lqs_bwrite_pending = 0;
lqs->lqs_iwrite_pending = 0;
lqs->lqs_ino_rec = 0;
lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
- lqs->lqs_ctxt = qctxt;
if (qctxt->lqc_handler) {
lqs->lqs_last_bshrink = 0;
lqs->lqs_last_ishrink = 0;
}
- lqs_initref(lqs);
- spin_lock(&qctxt->lqc_lock);
- if (!qctxt->lqc_valid)
- rc = -EBUSY;
- else
- rc = cfs_hash_add_unique(qctxt->lqc_lqs_hash,
- &lqs->lqs_key, &lqs->lqs_hash);
- spin_unlock(&qctxt->lqc_lock);
+ lqs->lqs_ctxt = qctxt; /* must be called before lqs_initref */
+ cfs_atomic_set(&lqs->lqs_refcount, 1); /* 1 for caller */
+ cfs_atomic_inc(&lqs->lqs_ctxt->lqc_lqs);
- if (!rc)
- lqs_getref(lqs);
+ /* lqc_lqs_hash will take +1 refcount on lqs on adding */
+ lqs2 = cfs_hash_findadd_unique(qctxt->lqc_lqs_hash,
+ &lqs->lqs_key, &lqs->lqs_hash);
+ if (lqs2 == lqs) /* added to hash */
+ goto out_put;
- out:
- if (rc && lqs)
- OBD_FREE_PTR(lqs);
+ create = 0;
+ lqs_putref(lqs);
+ lqs = lqs2;
- if (rc)
+ out_put:
+ cfs_hash_putref(hs);
+ out:
+ if (rc != 0) { /* error */
+ CERROR("get lqs error(rc: %d)\n", rc);
return ERR_PTR(rc);
- else
- return lqs;
-}
-
-struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
- struct lustre_quota_ctxt *qctxt,
- int create)
-{
- struct lustre_qunit_size *lqs;
- int rc = 0;
-
- search_lqs:
- lqs = cfs_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
- if (IS_ERR(lqs))
- GOTO(out, rc = PTR_ERR(lqs));
-
- if (create && lqs == NULL) {
- /* if quota_create_lqs is successful, it will get a
- * ref to the lqs. The ref will be released when
- * qctxt_cleanup() or quota is nullified */
- lqs = quota_create_lqs(lqs_key, qctxt);
- if (IS_ERR(lqs))
- rc = PTR_ERR(lqs);
- if (rc == -EALREADY)
- GOTO(search_lqs, rc = 0);
- /* get a reference for the caller when creating lqs
- * successfully */
- if (rc == 0)
- lqs_getref(lqs);
}
- if (lqs && rc == 0)
+ if (lqs != NULL) {
LQS_DEBUG(lqs, "%s\n",
(create == 1 ? "create lqs" : "search lqs"));
-
- out:
- if (rc == 0) {
- return lqs;
- } else {
- CERROR("get lqs error(rc: %d)\n", rc);
- return ERR_PTR(rc);
}
+ return lqs;
}
int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n",
lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
- spin_lock(&lqs->lqs_lock);
+ cfs_spin_lock(&lqs->lqs_lock);
for (i = 0; i < 2; i++) {
if (i == 0 && !QAQ_IS_ADJBLK(oqaq))
continue;
if (tmp < 0)
rc |= i ? LQS_INO_INCREASE : LQS_BLK_INCREASE;
}
- spin_unlock(&lqs->lqs_lock);
+ cfs_spin_unlock(&lqs->lqs_lock);
CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n",
lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
int filter_quota_adjust_qunit(struct obd_export *exp,
struct quota_adjust_qunit *oqaq,
- struct lustre_quota_ctxt *qctxt)
+ struct lustre_quota_ctxt *qctxt,
+ struct ptlrpc_request_set *rqset)
{
struct obd_device *obd = exp->exp_obd;
unsigned int id[MAXQUOTAS] = { 0, 0 };
}
#endif /* __KERNEL__ */
#endif
-
-int client_quota_adjust_qunit(struct obd_export *exp,
- struct quota_adjust_qunit *oqaq,
- struct lustre_quota_ctxt *qctxt)
-{
- struct ptlrpc_request *req;
- struct quota_adjust_qunit *oqa;
- int rc = 0;
- ENTRY;
-
- /* client don't support this kind of operation, abort it */
- if (!(exp->exp_connect_flags & OBD_CONNECT_CHANGE_QS)) {
- CDEBUG(D_QUOTA, "osc: %s don't support change qunit size\n",
- exp->exp_obd->obd_name);
- RETURN(rc);
- }
- if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
- RETURN(-EINVAL);
-
- req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
- &RQF_OST_QUOTA_ADJUST_QUNIT,
- LUSTRE_OST_VERSION,
- OST_QUOTA_ADJUST_QUNIT);
- if (req == NULL)
- RETURN(-ENOMEM);
-
- oqa = req_capsule_client_get(&req->rq_pill, &RMF_QUOTA_ADJUST_QUNIT);
- *oqa = *oqaq;
-
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- CERROR("%s: %s failed: rc = %d\n", exp->exp_obd->obd_name,
- __FUNCTION__, rc);
- ptlrpc_req_finished(req);
- RETURN (rc);
-}
-
-int lov_quota_adjust_qunit(struct obd_export *exp,
- struct quota_adjust_qunit *oqaq,
- struct lustre_quota_ctxt *qctxt)
-{
- struct obd_device *obd = class_exp2obd(exp);
- struct lov_obd *lov = &obd->u.lov;
- int i, rc = 0;
- ENTRY;
-
- if (!QAQ_IS_ADJBLK(oqaq)) {
- CERROR("bad qaq_flags %x for lov obd.\n", oqaq->qaq_flags);
- RETURN(-EFAULT);
- }
-
- for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- int err;
-
- if (!lov->lov_tgts[i]->ltd_active) {
- CDEBUG(D_HA, "ost %d is inactive\n", i);
- continue;
- }
-
- err = obd_quota_adjust_qunit(lov->lov_tgts[i]->ltd_exp, oqaq,
- NULL);
- if (err) {
- if (lov->lov_tgts[i]->ltd_active && !rc)
- rc = err;
- continue;
- }
- }
- RETURN(rc);
-}