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1/*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_QM_H__
19#define __XFS_QM_H__
20
21#include "xfs_dquot_item.h"
22#include "xfs_dquot.h"
23
24struct xfs_inode;
25
26extern struct kmem_zone *xfs_qm_dqtrxzone;
27
28/*
29 * Number of bmaps that we ask from bmapi when doing a quotacheck.
30 * We make this restriction to keep the memory usage to a minimum.
31 */
32#define XFS_DQITER_MAP_SIZE 10
33
34#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
35 !dqp->q_core.d_blk_hardlimit && \
36 !dqp->q_core.d_blk_softlimit && \
37 !dqp->q_core.d_rtb_hardlimit && \
38 !dqp->q_core.d_rtb_softlimit && \
39 !dqp->q_core.d_ino_hardlimit && \
40 !dqp->q_core.d_ino_softlimit && \
41 !dqp->q_core.d_bcount && \
42 !dqp->q_core.d_rtbcount && \
43 !dqp->q_core.d_icount)
44
45/*
46 * This defines the unit of allocation of dquots.
47 * Currently, it is just one file system block, and a 4K blk contains 30
48 * (136 * 30 = 4080) dquots. It's probably not worth trying to make
49 * this more dynamic.
50 * XXXsup However, if this number is changed, we have to make sure that we don't
51 * implicitly assume that we do allocations in chunks of a single filesystem
52 * block in the dquot/xqm code.
53 */
54#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
55
56struct xfs_def_quota {
57 xfs_qcnt_t bhardlimit; /* default data blk hard limit */
58 xfs_qcnt_t bsoftlimit; /* default data blk soft limit */
59 xfs_qcnt_t ihardlimit; /* default inode count hard limit */
60 xfs_qcnt_t isoftlimit; /* default inode count soft limit */
61 xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */
62 xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */
63};
64
65/*
66 * Various quota information for individual filesystems.
67 * The mount structure keeps a pointer to this.
68 */
69typedef struct xfs_quotainfo {
70 struct radix_tree_root qi_uquota_tree;
71 struct radix_tree_root qi_gquota_tree;
72 struct radix_tree_root qi_pquota_tree;
73 struct mutex qi_tree_lock;
74 struct xfs_inode *qi_uquotaip; /* user quota inode */
75 struct xfs_inode *qi_gquotaip; /* group quota inode */
76 struct xfs_inode *qi_pquotaip; /* project quota inode */
77 struct list_lru qi_lru;
78 int qi_dquots;
79 time_t qi_btimelimit; /* limit for blks timer */
80 time_t qi_itimelimit; /* limit for inodes timer */
81 time_t qi_rtbtimelimit;/* limit for rt blks timer */
82 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
83 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
84 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
85 struct mutex qi_quotaofflock;/* to serialize quotaoff */
86 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
87 uint qi_dqperchunk; /* # ondisk dqs in above chunk */
88 struct xfs_def_quota qi_usr_default;
89 struct xfs_def_quota qi_grp_default;
90 struct xfs_def_quota qi_prj_default;
91 struct shrinker qi_shrinker;
92} xfs_quotainfo_t;
93
94static inline struct radix_tree_root *
95xfs_dquot_tree(
96 struct xfs_quotainfo *qi,
97 int type)
98{
99 switch (type) {
100 case XFS_DQ_USER:
101 return &qi->qi_uquota_tree;
102 case XFS_DQ_GROUP:
103 return &qi->qi_gquota_tree;
104 case XFS_DQ_PROJ:
105 return &qi->qi_pquota_tree;
106 default:
107 ASSERT(0);
108 }
109 return NULL;
110}
111
112static inline struct xfs_inode *
113xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
114{
115 switch (dq_flags & XFS_DQ_ALLTYPES) {
116 case XFS_DQ_USER:
117 return mp->m_quotainfo->qi_uquotaip;
118 case XFS_DQ_GROUP:
119 return mp->m_quotainfo->qi_gquotaip;
120 case XFS_DQ_PROJ:
121 return mp->m_quotainfo->qi_pquotaip;
122 default:
123 ASSERT(0);
124 }
125 return NULL;
126}
127
128extern void xfs_trans_mod_dquot(struct xfs_trans *,
129 struct xfs_dquot *, uint, long);
130extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
131 struct xfs_mount *, struct xfs_dquot *,
132 struct xfs_dquot *, struct xfs_dquot *,
133 long, long, uint);
134extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
135extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
136
137/*
138 * We keep the usr, grp, and prj dquots separately so that locking will be
139 * easier to do at commit time. All transactions that we know of at this point
140 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
141 */
142enum {
143 XFS_QM_TRANS_USR = 0,
144 XFS_QM_TRANS_GRP,
145 XFS_QM_TRANS_PRJ,
146 XFS_QM_TRANS_DQTYPES
147};
148#define XFS_QM_TRANS_MAXDQS 2
149struct xfs_dquot_acct {
150 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
151};
152
153/*
154 * Users are allowed to have a usage exceeding their softlimit for
155 * a period this long.
156 */
157#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
158#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
159#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
160
161#define XFS_QM_BWARNLIMIT 5
162#define XFS_QM_IWARNLIMIT 5
163#define XFS_QM_RTBWARNLIMIT 5
164
165extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
166
167/* dquot stuff */
168extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
169extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
170
171/* quota ops */
172extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
173extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t *,
174 uint, struct qc_dqblk *, uint);
175extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
176 struct qc_dqblk *);
177extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
178extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
179
180static inline struct xfs_def_quota *
181xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
182{
183 struct xfs_def_quota *defq;
184
185 if (XFS_QM_ISUDQ(dqp))
186 defq = &qi->qi_usr_default;
187 else if (XFS_QM_ISGDQ(dqp))
188 defq = &qi->qi_grp_default;
189 else {
190 ASSERT(XFS_QM_ISPDQ(dqp));
191 defq = &qi->qi_prj_default;
192 }
193 return defq;
194}
195
196#endif /* __XFS_QM_H__ */
1/*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_QM_H__
19#define __XFS_QM_H__
20
21#include "xfs_dquot_item.h"
22#include "xfs_dquot.h"
23#include "xfs_quota_priv.h"
24#include "xfs_qm_stats.h"
25
26struct xfs_qm;
27struct xfs_inode;
28
29extern uint ndquot;
30extern struct mutex xfs_Gqm_lock;
31extern struct xfs_qm *xfs_Gqm;
32extern kmem_zone_t *qm_dqzone;
33extern kmem_zone_t *qm_dqtrxzone;
34
35/*
36 * Used in xfs_qm_sync called by xfs_sync to count the max times that it can
37 * iterate over the mountpt's dquot list in one call.
38 */
39#define XFS_QM_SYNC_MAX_RESTARTS 7
40
41/*
42 * Ditto, for xfs_qm_dqreclaim_one.
43 */
44#define XFS_QM_RECLAIM_MAX_RESTARTS 4
45
46/*
47 * Ideal ratio of free to in use dquots. Quota manager makes an attempt
48 * to keep this balance.
49 */
50#define XFS_QM_DQFREE_RATIO 2
51
52/*
53 * Dquot hashtable constants/threshold values.
54 */
55#define XFS_QM_HASHSIZE_LOW (PAGE_SIZE / sizeof(xfs_dqhash_t))
56#define XFS_QM_HASHSIZE_HIGH ((PAGE_SIZE * 4) / sizeof(xfs_dqhash_t))
57
58/*
59 * This defines the unit of allocation of dquots.
60 * Currently, it is just one file system block, and a 4K blk contains 30
61 * (136 * 30 = 4080) dquots. It's probably not worth trying to make
62 * this more dynamic.
63 * XXXsup However, if this number is changed, we have to make sure that we don't
64 * implicitly assume that we do allocations in chunks of a single filesystem
65 * block in the dquot/xqm code.
66 */
67#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
68
69typedef xfs_dqhash_t xfs_dqlist_t;
70
71/*
72 * Quota Manager (global) structure. Lives only in core.
73 */
74typedef struct xfs_qm {
75 xfs_dqlist_t *qm_usr_dqhtable;/* udquot hash table */
76 xfs_dqlist_t *qm_grp_dqhtable;/* gdquot hash table */
77 uint qm_dqhashmask; /* # buckets in dq hashtab - 1 */
78 struct list_head qm_dqfrlist; /* freelist of dquots */
79 struct mutex qm_dqfrlist_lock;
80 int qm_dqfrlist_cnt;
81 atomic_t qm_totaldquots; /* total incore dquots */
82 uint qm_nrefs; /* file systems with quota on */
83 int qm_dqfree_ratio;/* ratio of free to inuse dquots */
84 kmem_zone_t *qm_dqzone; /* dquot mem-alloc zone */
85 kmem_zone_t *qm_dqtrxzone; /* t_dqinfo of transactions */
86} xfs_qm_t;
87
88/*
89 * Various quota information for individual filesystems.
90 * The mount structure keeps a pointer to this.
91 */
92typedef struct xfs_quotainfo {
93 xfs_inode_t *qi_uquotaip; /* user quota inode */
94 xfs_inode_t *qi_gquotaip; /* group quota inode */
95 struct list_head qi_dqlist; /* all dquots in filesys */
96 struct mutex qi_dqlist_lock;
97 int qi_dquots;
98 int qi_dqreclaims; /* a change here indicates
99 a removal in the dqlist */
100 time_t qi_btimelimit; /* limit for blks timer */
101 time_t qi_itimelimit; /* limit for inodes timer */
102 time_t qi_rtbtimelimit;/* limit for rt blks timer */
103 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
104 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
105 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
106 struct mutex qi_quotaofflock;/* to serialize quotaoff */
107 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
108 uint qi_dqperchunk; /* # ondisk dqs in above chunk */
109 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
110 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
111 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
112 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
113 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
114 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
115} xfs_quotainfo_t;
116
117
118extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long);
119extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *,
120 xfs_dquot_t *, xfs_dquot_t *, long, long, uint);
121extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *);
122extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *);
123
124/*
125 * We keep the usr and grp dquots separately so that locking will be easier
126 * to do at commit time. All transactions that we know of at this point
127 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
128 */
129#define XFS_QM_TRANS_MAXDQS 2
130typedef struct xfs_dquot_acct {
131 xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS];
132 xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS];
133} xfs_dquot_acct_t;
134
135/*
136 * Users are allowed to have a usage exceeding their softlimit for
137 * a period this long.
138 */
139#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
140#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
141#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
142
143#define XFS_QM_BWARNLIMIT 5
144#define XFS_QM_IWARNLIMIT 5
145#define XFS_QM_RTBWARNLIMIT 5
146
147extern void xfs_qm_destroy_quotainfo(xfs_mount_t *);
148extern int xfs_qm_quotacheck(xfs_mount_t *);
149extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t);
150
151/* dquot stuff */
152extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **);
153extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint);
154extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint);
155
156/* quota ops */
157extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
158extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
159 fs_disk_quota_t *);
160extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint,
161 fs_disk_quota_t *);
162extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
163extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
164extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint);
165
166#endif /* __XFS_QM_H__ */