1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_QM_H__
#define __XFS_QM_H__
#include "xfs_dquot_item.h"
#include "xfs_dquot.h"
#include "xfs_quota_priv.h"
struct xfs_inode;
extern struct kmem_zone *xfs_qm_dqtrxzone;
/*
* This defines the unit of allocation of dquots.
* Currently, it is just one file system block, and a 4K blk contains 30
* (136 * 30 = 4080) dquots. It's probably not worth trying to make
* this more dynamic.
* XXXsup However, if this number is changed, we have to make sure that we don't
* implicitly assume that we do allocations in chunks of a single filesystem
* block in the dquot/xqm code.
*/
#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
/*
* Various quota information for individual filesystems.
* The mount structure keeps a pointer to this.
*/
typedef struct xfs_quotainfo {
struct radix_tree_root qi_uquota_tree;
struct radix_tree_root qi_gquota_tree;
struct radix_tree_root qi_pquota_tree;
struct mutex qi_tree_lock;
struct xfs_inode *qi_uquotaip; /* user quota inode */
struct xfs_inode *qi_gquotaip; /* group quota inode */
struct xfs_inode *qi_pquotaip; /* project quota inode */
struct list_head qi_lru_list;
struct mutex qi_lru_lock;
int qi_lru_count;
int qi_dquots;
time_t qi_btimelimit; /* limit for blks timer */
time_t qi_itimelimit; /* limit for inodes timer */
time_t qi_rtbtimelimit;/* limit for rt blks timer */
xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
struct mutex qi_quotaofflock;/* to serialize quotaoff */
xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
uint qi_dqperchunk; /* # ondisk dqs in above chunk */
xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
struct shrinker qi_shrinker;
} xfs_quotainfo_t;
static inline struct radix_tree_root *
xfs_dquot_tree(
struct xfs_quotainfo *qi,
int type)
{
switch (type) {
case XFS_DQ_USER:
return &qi->qi_uquota_tree;
case XFS_DQ_GROUP:
return &qi->qi_gquota_tree;
case XFS_DQ_PROJ:
return &qi->qi_pquota_tree;
default:
ASSERT(0);
}
return NULL;
}
static inline struct xfs_inode *
xfs_dq_to_quota_inode(struct xfs_dquot *dqp)
{
switch (dqp->dq_flags & XFS_DQ_ALLTYPES) {
case XFS_DQ_USER:
return dqp->q_mount->m_quotainfo->qi_uquotaip;
case XFS_DQ_GROUP:
return dqp->q_mount->m_quotainfo->qi_gquotaip;
case XFS_DQ_PROJ:
return dqp->q_mount->m_quotainfo->qi_pquotaip;
default:
ASSERT(0);
}
return NULL;
}
extern int xfs_qm_calc_dquots_per_chunk(struct xfs_mount *mp,
unsigned int nbblks);
extern void xfs_trans_mod_dquot(struct xfs_trans *,
struct xfs_dquot *, uint, long);
extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
struct xfs_mount *, struct xfs_dquot *,
struct xfs_dquot *, struct xfs_dquot *,
long, long, uint);
extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
/*
* We keep the usr, grp, and prj dquots separately so that locking will be
* easier to do at commit time. All transactions that we know of at this point
* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
*/
enum {
XFS_QM_TRANS_USR = 0,
XFS_QM_TRANS_GRP,
XFS_QM_TRANS_PRJ,
XFS_QM_TRANS_DQTYPES
};
#define XFS_QM_TRANS_MAXDQS 2
struct xfs_dquot_acct {
struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
};
/*
* Users are allowed to have a usage exceeding their softlimit for
* a period this long.
*/
#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
#define XFS_QM_BWARNLIMIT 5
#define XFS_QM_IWARNLIMIT 5
#define XFS_QM_RTBWARNLIMIT 5
extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
extern int xfs_qm_quotacheck(struct xfs_mount *);
extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t);
/* dquot stuff */
extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
/* quota ops */
extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
uint, struct fs_disk_quota *);
extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
struct fs_disk_quota *);
extern int xfs_qm_scall_getqstat(struct xfs_mount *,
struct fs_quota_stat *);
extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
#endif /* __XFS_QM_H__ */
|
