+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * 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/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#define DEBUG_SUBSYSTEM S_LQUOTA
-
-#ifdef __KERNEL__
-# include <linux/version.h>
-# include <linux/module.h>
-# include <linux/init.h>
-# include <linux/fs.h>
-# include <linux/jbd.h>
-# include <linux/quota.h>
-# include <linux/buffer_head.h>
-# include <linux/workqueue.h>
-# include <linux/mount.h>
-#else /* __KERNEL__ */
-# include <liblustre.h>
-#endif
-
-#include <obd_class.h>
-#include <lustre_mds.h>
-#include <lustre_dlm.h>
-#include <lustre_cfg.h>
-#include <obd_ost.h>
-#include <lustre_fsfilt.h>
-#include <linux/lustre_quota.h>
-#include "quota_internal.h"
-
-#ifdef __KERNEL__
-/**
- * This function is charge of recording lqs_ino_rec and
- * lqs_blk_rec. when a lquota slave checks a quota
- * request(check_cur_qunit) and finishes a quota
- * request(dqacq_completion), it will be called.
- * is_chk: whether it is checking quota; otherwise, it is finishing
- * is_acq: whether it is acquiring; otherwise, it is releasing
- */
-void quota_compute_lqs(struct qunit_data *qdata, struct lustre_qunit_size *lqs,
- int is_chk, int is_acq)
-{
- long long *rec;
-
- LASSERT(qdata && lqs);
- LASSERT_SPIN_LOCKED(&lqs->lqs_lock);
-
- rec = QDATA_IS_BLK(qdata) ? &lqs->lqs_blk_rec : &lqs->lqs_ino_rec;
-
- if (!!is_chk + !!is_acq == 1)
- *rec -= qdata->qd_count;
- else
- *rec += qdata->qd_count;
-
-}
-
-struct lustre_qunit_size *quota_search_lqs(unsigned long long lqs_key,
- struct lustre_quota_ctxt *qctxt,
- int create)
-{
- 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) {
- rc = -ENOMEM;
- goto out_put;
- }
-
- lqs->lqs_key = lqs_key;
-
- cfs_spin_lock_init(&lqs->lqs_lock);
-
- lqs->lqs_bwrite_pending = 0;
- lqs->lqs_iwrite_pending = 0;
- lqs->lqs_ino_rec = 0;
- lqs->lqs_blk_rec = 0;
- lqs->lqs_id = LQS_KEY_ID(lqs->lqs_key);
- lqs->lqs_flags = LQS_KEY_GRP(lqs->lqs_key) ? LQUOTA_FLAGS_GRP : 0;
- lqs->lqs_bunit_sz = qctxt->lqc_bunit_sz;
- lqs->lqs_iunit_sz = qctxt->lqc_iunit_sz;
- lqs->lqs_btune_sz = qctxt->lqc_btune_sz;
- lqs->lqs_itune_sz = qctxt->lqc_itune_sz;
- if (qctxt->lqc_handler) {
- lqs->lqs_last_bshrink = 0;
- lqs->lqs_last_ishrink = 0;
- }
-
- 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);
-
- /* 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;
-
- create = 0;
- lqs_putref(lqs);
- lqs = lqs2;
-
- 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 != NULL) {
- LQS_DEBUG(lqs, "%s\n",
- (create == 1 ? "create lqs" : "search lqs"));
- }
- 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 *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, 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));
- }
-
- 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;
- }
-
- /* 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;
- }
-
-
- 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);
-
- 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 ptlrpc_request_set *rqset)
-{
- struct obd_device *obd = exp->exp_obd;
- unsigned int id[MAXQUOTAS] = { 0, 0 };
- int rc = 0;
- ENTRY;
-
- LASSERT(oqaq);
- LASSERT(QAQ_IS_ADJBLK(oqaq));
- rc = quota_adjust_slave_lqs(oqaq, qctxt);
- if (rc < 0) {
- CERROR("adjust mds slave's qunit size failed!(rc:%d)\n", rc);
- RETURN(rc);
- }
- if (QAQ_IS_GRP(oqaq))
- id[GRPQUOTA] = oqaq->qaq_id;
- else
- id[USRQUOTA] = oqaq->qaq_id;
-
- if (rc > 0) {
- rc = qctxt_adjust_qunit(obd, qctxt, id, 1, 0, NULL);
- if (rc == -EDQUOT || rc == -EBUSY ||
- rc == QUOTA_REQ_RETURNED || rc == -EAGAIN) {
- CDEBUG(D_QUOTA, "rc: %d.\n", rc);
- rc = 0;
- }
- if (rc)
- CERROR("slave adjust block quota failed!(rc:%d)\n", rc);
- }
- RETURN(rc);
-}
-#endif /* __KERNEL__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff