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Diffstat (limited to 'kernel/fs/xfs/xfs_qm.h')
| -rw-r--r-- | kernel/fs/xfs/xfs_qm.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/kernel/fs/xfs/xfs_qm.h b/kernel/fs/xfs/xfs_qm.h new file mode 100644 index 000000000..996a04064 --- /dev/null +++ b/kernel/fs/xfs/xfs_qm.h @@ -0,0 +1,174 @@ +/* + * 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" + +struct xfs_inode; + +extern struct kmem_zone *xfs_qm_dqtrxzone; + +/* + * Number of bmaps that we ask from bmapi when doing a quotacheck. + * We make this restriction to keep the memory usage to a minimum. + */ +#define XFS_DQITER_MAP_SIZE 10 + +#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \ + !dqp->q_core.d_blk_hardlimit && \ + !dqp->q_core.d_blk_softlimit && \ + !dqp->q_core.d_rtb_hardlimit && \ + !dqp->q_core.d_rtb_softlimit && \ + !dqp->q_core.d_ino_hardlimit && \ + !dqp->q_core.d_ino_softlimit && \ + !dqp->q_core.d_bcount && \ + !dqp->q_core.d_rtbcount && \ + !dqp->q_core.d_icount) + +/* + * 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_lru qi_lru; + 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 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 *); + +/* 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 qc_dqblk *); +extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, + struct qc_dqblk *); +extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); +extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); + +#endif /* __XFS_QM_H__ */ |