2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
21 #include "xfs_dquot_item.h"
22 #include "xfs_dquot.h"
23 #include "xfs_quota_priv.h"
27 extern struct kmem_zone *xfs_qm_dqtrxzone;
30 * This defines the unit of allocation of dquots.
31 * Currently, it is just one file system block, and a 4K blk contains 30
32 * (136 * 30 = 4080) dquots. It's probably not worth trying to make
34 * XXXsup However, if this number is changed, we have to make sure that we don't
35 * implicitly assume that we do allocations in chunks of a single filesystem
36 * block in the dquot/xqm code.
38 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
41 * Various quota information for individual filesystems.
42 * The mount structure keeps a pointer to this.
44 typedef struct xfs_quotainfo {
45 struct radix_tree_root qi_uquota_tree;
46 struct radix_tree_root qi_gquota_tree;
47 struct mutex qi_tree_lock;
48 xfs_inode_t *qi_uquotaip; /* user quota inode */
49 xfs_inode_t *qi_gquotaip; /* group quota inode */
50 struct list_head qi_lru_list;
51 struct mutex qi_lru_lock;
54 time_t qi_btimelimit; /* limit for blks timer */
55 time_t qi_itimelimit; /* limit for inodes timer */
56 time_t qi_rtbtimelimit;/* limit for rt blks timer */
57 xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
58 xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
59 xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
60 struct mutex qi_quotaofflock;/* to serialize quotaoff */
61 xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
62 uint qi_dqperchunk; /* # ondisk dqs in above chunk */
63 xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
64 xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
65 xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
66 xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
67 xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
68 xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
69 struct shrinker qi_shrinker;
72 static inline struct radix_tree_root *
74 struct xfs_quotainfo *qi,
79 return &qi->qi_uquota_tree;
82 return &qi->qi_gquota_tree;
89 static inline struct xfs_inode *
90 xfs_dq_to_quota_inode(struct xfs_dquot *dqp)
92 switch (dqp->dq_flags & XFS_DQ_ALLTYPES) {
94 return dqp->q_mount->m_quotainfo->qi_uquotaip;
97 return dqp->q_mount->m_quotainfo->qi_gquotaip;
104 extern int xfs_qm_calc_dquots_per_chunk(struct xfs_mount *mp,
105 unsigned int nbblks);
106 extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long);
107 extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *,
108 xfs_dquot_t *, xfs_dquot_t *, long, long, uint);
109 extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *);
110 extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *);
113 * We keep the usr and grp dquots separately so that locking will be easier
114 * to do at commit time. All transactions that we know of at this point
115 * affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
117 #define XFS_QM_TRANS_MAXDQS 2
118 typedef struct xfs_dquot_acct {
119 xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS];
120 xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS];
124 * Users are allowed to have a usage exceeding their softlimit for
125 * a period this long.
127 #define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
128 #define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
129 #define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
131 #define XFS_QM_BWARNLIMIT 5
132 #define XFS_QM_IWARNLIMIT 5
133 #define XFS_QM_RTBWARNLIMIT 5
135 extern void xfs_qm_destroy_quotainfo(xfs_mount_t *);
136 extern int xfs_qm_quotacheck(xfs_mount_t *);
137 extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t);
140 extern void xfs_qm_dqpurge_all(xfs_mount_t *, uint);
141 extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint);
144 extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
145 extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
147 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
149 extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
150 extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
151 extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint);
153 #endif /* __XFS_QM_H__ */