* 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.
*/
/*
#include <obd_ost.h>
#include <lustre_fsfilt.h>
#include <linux/lustre_quota.h>
-#include <class_hash.h>
#include "quota_internal.h"
#ifdef HAVE_QUOTA_SUPPORT
}
-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);
- rc = lustre_hash_add_unique(qctxt->lqc_lqs_hash, &lqs->lqs_key,
- &lqs->lqs_hash);
- if (!rc)
- lqs_getref(lqs);
- out:
- if (rc && lqs)
- OBD_FREE_PTR(lqs);
+ 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)
- return ERR_PTR(rc);
- else
- return 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;
-struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
- struct lustre_quota_ctxt *qctxt,
- int create)
-{
- int rc = 0;
- struct lustre_qunit_size *lqs;
+ create = 0;
+ lqs_putref(lqs);
+ lqs = lqs2;
- search_lqs:
- lqs = lustre_hash_lookup(qctxt->lqc_lqs_hash, &lqs_key);
- if (lqs == NULL && create) {
- lqs = quota_create_lqs(lqs_key, qctxt);
- if (IS_ERR(lqs))
- rc = PTR_ERR(lqs);
- if (rc == -EALREADY) {
- rc = 0;
- goto search_lqs;
- }
+ out_put:
+ cfs_hash_putref(hs);
+ out:
+ if (rc != 0) { /* error */
+ CERROR("get lqs error(rc: %d)\n", rc);
+ return ERR_PTR(rc);
}
- if (lqs)
+ if (lqs != NULL) {
LQS_DEBUG(lqs, "%s\n",
(create == 1 ? "create lqs" : "search lqs"));
-
- if (rc == 0) {
- return lqs;
- } else {
- CDEBUG(D_ERROR, "get lqs error(rc: %d)\n", rc);
- return ERR_PTR(rc);
}
+ return lqs;
}
int quota_adjust_slave_lqs(struct quota_adjust_qunit *oqaq,
struct lustre_quota_ctxt *qctxt)
{
struct lustre_qunit_size *lqs = NULL;
- unsigned long *lbunit, *liunit, *lbtune, *litune;
- signed long b_tmp = 0, i_tmp = 0;
- cfs_time_t time_limit = 0;
- int rc = 0;
+ unsigned long *unit, *tune;
+ signed long tmp = 0;
+ cfs_time_t time_limit = 0, *shrink;
+ int i, rc = 0;
ENTRY;
LASSERT(qctxt);
lqs = quota_search_lqs(LQS_KEY(QAQ_IS_GRP(oqaq), oqaq->qaq_id),
- qctxt, 1);
- if (lqs == NULL || IS_ERR(lqs))
+ qctxt, QAQ_IS_CREATE_LQS(oqaq) ? 1 : 0);
+ if (lqs == NULL || IS_ERR(lqs)){
+ CERROR("fail to find a lqs for %sid %u!\n",
+ QAQ_IS_GRP(oqaq) ? "g" : "u", oqaq->qaq_id);
RETURN(PTR_ERR(lqs));
-
- /* deleting the lqs, because a user sets lfs quota 0 0 0 0 */
- if (!oqaq->qaq_bunit_sz && !oqaq->qaq_iunit_sz && QAQ_IS_ADJBLK(oqaq) &&
- QAQ_IS_ADJINO(oqaq)) {
- LQS_DEBUG(lqs, "release lqs\n");
- /* this is for quota_search_lqs */
- lqs_putref(lqs);
- /* kill lqs */
- lqs_putref(lqs);
- RETURN(rc);
}
- lbunit = &lqs->lqs_bunit_sz;
- liunit = &lqs->lqs_iunit_sz;
- lbtune = &lqs->lqs_btune_sz;
- litune = &lqs->lqs_itune_sz;
-
- CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
- spin_lock(&lqs->lqs_lock);
- /* adjust the slave's block qunit size */
- if (QAQ_IS_ADJBLK(oqaq)) {
- cfs_duration_t sec = cfs_time_seconds(qctxt->lqc_switch_seconds);
-
- b_tmp = *lbunit - oqaq->qaq_bunit_sz;
-
- if (qctxt->lqc_handler && b_tmp > 0)
- lqs->lqs_last_bshrink = cfs_time_current();
-
- if (qctxt->lqc_handler && b_tmp < 0) {
- time_limit = cfs_time_add(lqs->lqs_last_bshrink, sec);
- if (!lqs->lqs_last_bshrink ||
- cfs_time_after(cfs_time_current(), time_limit)) {
- *lbunit = oqaq->qaq_bunit_sz;
- *lbtune = (*lbunit) / 2;
- } else {
- b_tmp = 0;
- }
- } else {
- *lbunit = oqaq->qaq_bunit_sz;
- *lbtune = (*lbunit) / 2;
+ CDEBUG(D_QUOTA, "before: bunit: %lu, iunit: %lu.\n",
+ lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
+ cfs_spin_lock(&lqs->lqs_lock);
+ for (i = 0; i < 2; i++) {
+ if (i == 0 && !QAQ_IS_ADJBLK(oqaq))
+ continue;
+
+ if (i == 1 && !QAQ_IS_ADJINO(oqaq))
+ continue;
+
+ tmp = i ? (lqs->lqs_iunit_sz - oqaq->qaq_iunit_sz) :
+ (lqs->lqs_bunit_sz - oqaq->qaq_bunit_sz);
+ shrink = i ? &lqs->lqs_last_ishrink :
+ &lqs->lqs_last_bshrink;
+ time_limit = cfs_time_add(i ? lqs->lqs_last_ishrink :
+ lqs->lqs_last_bshrink,
+ cfs_time_seconds(qctxt->lqc_switch_seconds));
+ unit = i ? &lqs->lqs_iunit_sz : &lqs->lqs_bunit_sz;
+ tune = i ? &lqs->lqs_itune_sz : &lqs->lqs_btune_sz;
+
+ /* quota master shrinks */
+ if (qctxt->lqc_handler && tmp > 0)
+ *shrink = cfs_time_current();
+
+ /* quota master enlarges */
+ if (qctxt->lqc_handler && tmp < 0) {
+ /* in case of ping-pong effect, don't enlarge lqs
+ * in a short time */
+ if (*shrink &&
+ cfs_time_before(cfs_time_current(), time_limit))
+ tmp = 0;
}
- }
- /* adjust the slave's file qunit size */
- if (QAQ_IS_ADJINO(oqaq)) {
- i_tmp = *liunit - oqaq->qaq_iunit_sz;
-
- if (qctxt->lqc_handler && i_tmp > 0)
- lqs->lqs_last_ishrink = cfs_time_current();
-
- if (qctxt->lqc_handler && i_tmp < 0) {
- time_limit = cfs_time_add(lqs->lqs_last_ishrink,
- cfs_time_seconds(qctxt->
- lqc_switch_seconds));
- if (!lqs->lqs_last_ishrink ||
- cfs_time_after(cfs_time_current(), time_limit)) {
- *liunit = oqaq->qaq_iunit_sz;
- *litune = (*liunit) / 2;
- } else {
- i_tmp = 0;
- }
- } else {
- *liunit = oqaq->qaq_iunit_sz;
- *litune = (*liunit) / 2;
+ /* when setquota, don't enlarge lqs b=18616 */
+ if (QAQ_IS_CREATE_LQS(oqaq) && tmp < 0)
+ tmp = 0;
+
+ if (tmp != 0) {
+ *unit = i ? oqaq->qaq_iunit_sz : oqaq->qaq_bunit_sz;
+ *tune = (*unit) / 2;
}
- }
- spin_unlock(&lqs->lqs_lock);
- CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n", *lbunit, *liunit);
- lqs_putref(lqs);
- if (b_tmp > 0)
- rc |= LQS_BLK_DECREASE;
- else if (b_tmp < 0)
- rc |= LQS_BLK_INCREASE;
+ if (tmp > 0)
+ rc |= i ? LQS_INO_DECREASE : LQS_BLK_DECREASE;
+ if (tmp < 0)
+ rc |= i ? LQS_INO_INCREASE : LQS_BLK_INCREASE;
+ }
+ cfs_spin_unlock(&lqs->lqs_lock);
+ CDEBUG(D_QUOTA, "after: bunit: %lu, iunit: %lu.\n",
+ lqs->lqs_bunit_sz, lqs->lqs_iunit_sz);
- if (i_tmp > 0)
- rc |= LQS_INO_DECREASE;
- else if (i_tmp < 0)
- rc |= LQS_INO_INCREASE;
+ lqs_putref(lqs);
RETURN(rc);
}
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 };
int client_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 ptlrpc_request *req;
struct quota_adjust_qunit *oqa;
if (strcmp(exp->exp_obd->obd_type->typ_name, LUSTRE_OSC_NAME))
RETURN(-EINVAL);
+ LASSERT(rqset);
+
req = ptlrpc_request_alloc_pack(class_exp2cliimp(exp),
&RQF_OST_QUOTA_ADJUST_QUNIT,
LUSTRE_OST_VERSION,
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);
+ ptlrpc_set_add_req(rqset, req);
RETURN (rc);
}
int lov_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 = class_exp2obd(exp);
struct lov_obd *lov = &obd->u.lov;
- int i, rc = 0;
+ int i, err, rc = 0;
+ unsigned no_set = 0;
ENTRY;
if (!QAQ_IS_ADJBLK(oqaq)) {
RETURN(-EFAULT);
}
+
+ if (rqset == NULL) {
+ rqset = ptlrpc_prep_set();
+ if (!rqset)
+ RETURN(-ENOMEM);
+ no_set = 1;
+ }
+
+ obd_getref(obd);
for (i = 0; i < lov->desc.ld_tgt_count; i++) {
- int err;
- if (!lov->lov_tgts[i]->ltd_active) {
+ if (!lov->lov_tgts[i] || !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);
+ NULL, rqset);
if (err) {
if (lov->lov_tgts[i]->ltd_active && !rc)
rc = err;
continue;
}
}
+
+ err = ptlrpc_set_wait(rqset);
+ if (!rc)
+ rc = err;
+
+ /* Destroy the set if none was provided by the caller */
+ if (no_set)
+ ptlrpc_set_destroy(rqset);
+
+ obd_putref(obd);
RETURN(rc);
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff