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"
26 extern struct kmem_zone *xfs_qm_dqtrxzone;
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.
32 #define XFS_DQITER_MAP_SIZE 10
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)
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
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.
54 #define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
56 struct 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 */
66 * Various quota information for individual filesystems.
67 * The mount structure keeps a pointer to this.
69 typedef 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;
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;
94 static inline struct radix_tree_root *
96 struct xfs_quotainfo *qi,
101 return &qi->qi_uquota_tree;
103 return &qi->qi_gquota_tree;
105 return &qi->qi_pquota_tree;
112 static inline struct xfs_inode *
113 xfs_quota_inode(xfs_mount_t *mp, uint dq_flags)
115 switch (dq_flags & XFS_DQ_ALLTYPES) {
117 return mp->m_quotainfo->qi_uquotaip;
119 return mp->m_quotainfo->qi_gquotaip;
121 return mp->m_quotainfo->qi_pquotaip;
128 extern void xfs_trans_mod_dquot(struct xfs_trans *,
129 struct xfs_dquot *, uint, long);
130 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
131 struct xfs_mount *, struct xfs_dquot *,
132 struct xfs_dquot *, struct xfs_dquot *,
134 extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *);
135 extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *);
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.
143 XFS_QM_TRANS_USR = 0,
148 #define XFS_QM_TRANS_MAXDQS 2
149 struct xfs_dquot_acct {
150 struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
154 * Users are allowed to have a usage exceeding their softlimit for
155 * a period this long.
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 */
161 #define XFS_QM_BWARNLIMIT 5
162 #define XFS_QM_IWARNLIMIT 5
163 #define XFS_QM_RTBWARNLIMIT 5
165 extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
168 extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
169 extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
172 extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
173 extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t *,
174 uint, struct qc_dqblk *, uint);
175 extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
177 extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
178 extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
180 static inline struct xfs_def_quota *
181 xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi)
183 struct xfs_def_quota *defq;
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;
190 ASSERT(XFS_QM_ISPDQ(dqp));
191 defq = &qi->qi_prj_default;
196 #endif /* __XFS_QM_H__ */