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1da177e4 | 1 | /* |
4ce3121f NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
4ce3121f NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
4ce3121f NS |
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. | |
1da177e4 | 13 | * |
4ce3121f NS |
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 | |
1da177e4 LT |
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 | ||
26 | struct xfs_qm; | |
27 | struct xfs_inode; | |
28 | ||
6b3f6b5b | 29 | extern uint ndquot; |
a0b0b8a5 | 30 | extern struct mutex xfs_Gqm_lock; |
1da177e4 LT |
31 | extern struct xfs_qm *xfs_Gqm; |
32 | extern kmem_zone_t *qm_dqzone; | |
33 | extern 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 | */ | |
e6a4b37f TS |
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)) | |
1da177e4 | 57 | |
1da177e4 LT |
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 | |
1da177e4 LT |
68 | |
69 | typedef xfs_dqhash_t xfs_dqlist_t; | |
1da177e4 LT |
70 | |
71 | /* | |
72 | * Quota Manager (global) structure. Lives only in core. | |
73 | */ | |
74 | typedef 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 */ | |
3a8406f6 DC |
78 | struct list_head qm_dqfrlist; /* freelist of dquots */ |
79 | struct mutex qm_dqfrlist_lock; | |
80 | int qm_dqfrlist_cnt; | |
1da177e4 LT |
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 | */ | |
92 | typedef struct xfs_quotainfo { | |
93 | xfs_inode_t *qi_uquotaip; /* user quota inode */ | |
94 | xfs_inode_t *qi_gquotaip; /* group quota inode */ | |
3a25404b DC |
95 | struct list_head qi_dqlist; /* all dquots in filesys */ |
96 | struct mutex qi_dqlist_lock; | |
97 | int qi_dquots; | |
1da177e4 LT |
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 */ | |
06d10dd9 NS |
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 */ | |
a0b0b8a5 | 106 | struct mutex qi_quotaofflock;/* to serialize quotaoff */ |
1da177e4 LT |
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 | ||
1da177e4 LT |
118 | extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long); |
119 | extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *, | |
120 | xfs_dquot_t *, xfs_dquot_t *, long, long, uint); | |
121 | extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *); | |
122 | extern 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 | |
130 | typedef 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 | |
06d10dd9 | 145 | #define XFS_QM_RTBWARNLIMIT 5 |
1da177e4 | 146 | |
1da177e4 | 147 | extern void xfs_qm_destroy_quotainfo(xfs_mount_t *); |
1da177e4 | 148 | extern int xfs_qm_quotacheck(xfs_mount_t *); |
1da177e4 | 149 | extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t); |
1da177e4 LT |
150 | |
151 | /* dquot stuff */ | |
152 | extern boolean_t xfs_qm_dqalloc_incore(xfs_dquot_t **); | |
1da177e4 LT |
153 | extern int xfs_qm_dqpurge_all(xfs_mount_t *, uint); |
154 | extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint); | |
155 | ||
fcafb71b CH |
156 | /* quota ops */ |
157 | extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint); | |
158 | extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint, | |
159 | fs_disk_quota_t *); | |
160 | extern int xfs_qm_scall_setqlim(xfs_mount_t *, xfs_dqid_t, uint, | |
161 | fs_disk_quota_t *); | |
162 | extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *); | |
163 | extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint); | |
164 | extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint); | |
165 | ||
1da177e4 | 166 | #endif /* __XFS_QM_H__ */ |