diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/include/lustre_quota.h')
| -rw-r--r-- | drivers/staging/lustre/lustre/include/lustre_quota.h | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/drivers/staging/lustre/lustre/include/lustre_quota.h b/drivers/staging/lustre/lustre/include/lustre_quota.h deleted file mode 100644 index 2643f28070a2..000000000000 --- a/drivers/staging/lustre/lustre/include/lustre_quota.h +++ /dev/null @@ -1,241 +0,0 @@ -/* - * 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, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA - * - * GPL HEADER END - */ -/* - * Copyright (c) 2011, 2012, Intel Corporation. - * Use is subject to license terms. - */ - -#ifndef _LUSTRE_QUOTA_H -#define _LUSTRE_QUOTA_H - -/** \defgroup quota quota - * - */ - -#include <linux/fs.h> -#include <linux/quota.h> -#include <linux/quotaops.h> - -#include "dt_object.h" -#include "lustre_fid.h" -#include "lustre_dlm.h" - -#ifndef MAX_IQ_TIME -#define MAX_IQ_TIME 604800 /* (7*24*60*60) 1 week */ -#endif - -#ifndef MAX_DQ_TIME -#define MAX_DQ_TIME 604800 /* (7*24*60*60) 1 week */ -#endif - -struct lquota_id_info; -struct lquota_trans; - -/* Gather all quota record type in an union that can be used to read any records - * from disk. All fields of these records must be 64-bit aligned, otherwise the - * OSD layer may swab them incorrectly. */ -union lquota_rec { - struct lquota_glb_rec lqr_glb_rec; - struct lquota_slv_rec lqr_slv_rec; - struct lquota_acct_rec lqr_acct_rec; -}; - -/* Index features supported by the global index objects - * Only used for migration purpose and should be removed once on-disk migration - * is no longer needed */ -extern struct dt_index_features dt_quota_iusr_features; -extern struct dt_index_features dt_quota_busr_features; -extern struct dt_index_features dt_quota_igrp_features; -extern struct dt_index_features dt_quota_bgrp_features; - -/* Name used in the configuration logs to identify the default metadata pool - * (composed of all the MDTs, with pool ID 0) and the default data pool (all - * the OSTs, with pool ID 0 too). */ -#define QUOTA_METAPOOL_NAME "mdt=" -#define QUOTA_DATAPOOL_NAME "ost=" - -/* - * Quota Master Target support - */ - -/* Request handlers for quota master operations. - * This is used by the MDT to pass quota/lock requests to the quota master - * target. This won't be needed any more once the QMT is a real target and - * does not rely any more on the MDT service threads and namespace. */ -struct qmt_handlers { - /* Handle quotactl request from client. */ - int (*qmth_quotactl)(const struct lu_env *, struct lu_device *, - struct obd_quotactl *); - - /* Handle dqacq/dqrel request from slave. */ - int (*qmth_dqacq)(const struct lu_env *, struct lu_device *, - struct ptlrpc_request *); - - /* LDLM intent policy associated with quota locks */ - int (*qmth_intent_policy)(const struct lu_env *, struct lu_device *, - struct ptlrpc_request *, struct ldlm_lock **, - int); - - /* Initialize LVB of ldlm resource associated with quota objects */ - int (*qmth_lvbo_init)(struct lu_device *, struct ldlm_resource *); - - /* Update LVB of ldlm resource associated with quota objects */ - int (*qmth_lvbo_update)(struct lu_device *, struct ldlm_resource *, - struct ptlrpc_request *, int); - - /* Return size of LVB to be packed in ldlm message */ - int (*qmth_lvbo_size)(struct lu_device *, struct ldlm_lock *); - - /* Fill request buffer with lvb */ - int (*qmth_lvbo_fill)(struct lu_device *, struct ldlm_lock *, void *, - int); - - /* Free lvb associated with ldlm resource */ - int (*qmth_lvbo_free)(struct lu_device *, struct ldlm_resource *); -}; - -/* actual handlers are defined in lustre/quota/qmt_handler.c */ -extern struct qmt_handlers qmt_hdls; - -/* - * Quota enforcement support on slaves - */ - -struct qsd_instance; - -/* The quota slave feature is implemented under the form of a library. - * The API is the following: - * - * - qsd_init(): the user (mostly the OSD layer) should first allocate a qsd - * instance via qsd_init(). This creates all required structures - * to manage quota enforcement for this target and performs all - * low-level initialization which does not involve any lustre - * object. qsd_init() should typically be called when the OSD - * is being set up. - * - * - qsd_prepare(): This sets up on-disk objects associated with the quota slave - * feature and initiates the quota reintegration procedure if - * needed. qsd_prepare() should typically be called when - * ->ldo_prepare is invoked. - * - * - qsd_start(): a qsd instance should be started once recovery is completed - * (i.e. when ->ldo_recovery_complete is called). This is used - * to notify the qsd layer that quota should now be enforced - * again via the qsd_op_begin/end functions. The last step of the - * reintegration procedure (namely usage reconciliation) will be - * completed during start. - * - * - qsd_fini(): is used to release a qsd_instance structure allocated with - * qsd_init(). This releases all quota slave objects and frees the - * structures associated with the qsd_instance. - * - * - qsd_op_begin(): is used to enforce quota, it must be called in the - * declaration of each operation. qsd_op_end() should then be - * invoked later once all operations have been completed in - * order to release/adjust the quota space. - * Running qsd_op_begin() before qsd_start() isn't fatal and - * will return success. - * Once qsd_start() has been run, qsd_op_begin() will block - * until the reintegration procedure is completed. - * - * - qsd_op_end(): performs the post operation quota processing. This must be - * called after the operation transaction stopped. - * While qsd_op_begin() must be invoked each time a new - * operation is declared, qsd_op_end() should be called only - * once for the whole transaction. - * - * - qsd_op_adjust(): triggers pre-acquire/release if necessary. - * - * Below are the function prototypes to be used by OSD layer to manage quota - * enforcement. Arguments are documented where each function is defined. */ - -struct qsd_instance *qsd_init(const struct lu_env *, char *, struct dt_device *, - struct proc_dir_entry *); -int qsd_prepare(const struct lu_env *, struct qsd_instance *); -int qsd_start(const struct lu_env *, struct qsd_instance *); -void qsd_fini(const struct lu_env *, struct qsd_instance *); -int qsd_op_begin(const struct lu_env *, struct qsd_instance *, - struct lquota_trans *, struct lquota_id_info *, int *); -void qsd_op_end(const struct lu_env *, struct qsd_instance *, - struct lquota_trans *); -void qsd_op_adjust(const struct lu_env *, struct qsd_instance *, - union lquota_id *, int); -/* This is exported for the ldiskfs quota migration only, - * see convert_quota_file() */ -int lquota_disk_write_glb(const struct lu_env *, struct dt_object *, - __u64, struct lquota_glb_rec *); - -/* - * Quota information attached to a transaction - */ - -struct lquota_entry; - -struct lquota_id_info { - /* quota identifier */ - union lquota_id lqi_id; - - /* USRQUOTA or GRPQUOTA for now, could be expanded for - * directory quota or other types later. */ - int lqi_type; - - /* inodes or kbytes to be consumed or released, it could - * be negative when releasing space. */ - long long lqi_space; - - /* quota slave entry structure associated with this ID */ - struct lquota_entry *lqi_qentry; - - /* whether we are reporting blocks or inodes */ - bool lqi_is_blk; -}; - -/* Since we enforce only inode quota in meta pool (MDTs), and block quota in - * data pool (OSTs), there are at most 4 quota ids being enforced in a single - * transaction, which is chown transaction: - * original uid and gid, new uid and gid. - * - * This value might need to be revised when directory quota is added. */ -#define QUOTA_MAX_TRANSIDS 4 - -/* all qids involved in a single transaction */ -struct lquota_trans { - unsigned short lqt_id_cnt; - struct lquota_id_info lqt_ids[QUOTA_MAX_TRANSIDS]; -}; - -/* flags for quota local enforcement */ -#define QUOTA_FL_OVER_USRQUOTA 0x01 -#define QUOTA_FL_OVER_GRPQUOTA 0x02 -#define QUOTA_FL_SYNC 0x04 - -#define IS_LQUOTA_RES(res) \ - (res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] == FID_SEQ_QUOTA || \ - res->lr_name.name[LUSTRE_RES_ID_SEQ_OFF] == FID_SEQ_QUOTA_GLB) - -/* helper function used by MDT & OFD to retrieve quota accounting information - * on slave */ -int lquotactl_slv(const struct lu_env *, struct dt_device *, - struct obd_quotactl *); -/** @} quota */ -#endif /* _LUSTRE_QUOTA_H */ |