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fs/xfs/xfs_qm.h
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// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2000-2005 Silicon Graphics, Inc. * All Rights Reserved. |
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*/ #ifndef __XFS_QM_H__ #define __XFS_QM_H__ #include "xfs_dquot_item.h" #include "xfs_dquot.h" |
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struct xfs_inode; |
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extern struct kmem_zone *xfs_qm_dqtrxzone; |
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/* |
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* 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) /* |
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* 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 |
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struct xfs_def_quota { xfs_qcnt_t bhardlimit; /* default data blk hard limit */ xfs_qcnt_t bsoftlimit; /* default data blk soft limit */ xfs_qcnt_t ihardlimit; /* default inode count hard limit */ xfs_qcnt_t isoftlimit; /* default inode count soft limit */ xfs_qcnt_t rtbhardlimit; /* default realtime blk hard limit */ xfs_qcnt_t rtbsoftlimit; /* default realtime blk soft limit */ }; |
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/* |
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* Various quota information for individual filesystems. * The mount structure keeps a pointer to this. */ typedef struct xfs_quotainfo { |
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struct radix_tree_root qi_uquota_tree; struct radix_tree_root qi_gquota_tree; |
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struct radix_tree_root qi_pquota_tree; |
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struct mutex qi_tree_lock; |
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struct xfs_inode *qi_uquotaip; /* user quota inode */ struct xfs_inode *qi_gquotaip; /* group quota inode */ struct xfs_inode *qi_pquotaip; /* project quota inode */ |
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struct list_lru qi_lru; |
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int qi_dquots; |
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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 */ |
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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 */ |
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struct mutex qi_quotaofflock;/* to serialize quotaoff */ |
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xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */ uint qi_dqperchunk; /* # ondisk dqs in above chunk */ |
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struct xfs_def_quota qi_usr_default; struct xfs_def_quota qi_grp_default; struct xfs_def_quota qi_prj_default; |
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struct shrinker qi_shrinker; |
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} xfs_quotainfo_t; |
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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: |
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return &qi->qi_gquota_tree; |
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case XFS_DQ_PROJ: return &qi->qi_pquota_tree; |
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default: ASSERT(0); } return NULL; } |
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static inline struct xfs_inode * |
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xfs_quota_inode(xfs_mount_t *mp, uint dq_flags) |
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{ |
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switch (dq_flags & XFS_DQ_ALLTYPES) { |
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case XFS_DQ_USER: |
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return mp->m_quotainfo->qi_uquotaip; |
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case XFS_DQ_GROUP: |
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return mp->m_quotainfo->qi_gquotaip; |
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case XFS_DQ_PROJ: |
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return mp->m_quotainfo->qi_pquotaip; |
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default: ASSERT(0); } return NULL; } |
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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 *, |
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struct xfs_dquot *, struct xfs_dquot *, long, long, uint); |
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extern void xfs_trans_dqjoin(struct xfs_trans *, struct xfs_dquot *); extern void xfs_trans_log_dquot(struct xfs_trans *, struct xfs_dquot *); |
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/* |
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* 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 |
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* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value. */ |
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enum { XFS_QM_TRANS_USR = 0, XFS_QM_TRANS_GRP, |
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XFS_QM_TRANS_PRJ, |
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XFS_QM_TRANS_DQTYPES }; |
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#define XFS_QM_TRANS_MAXDQS 2 |
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struct xfs_dquot_acct { struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS]; }; |
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/* * 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 |
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#define XFS_QM_RTBWARNLIMIT 5 |
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extern void xfs_qm_destroy_quotainfo(struct xfs_mount *); |
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/* dquot stuff */ |
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extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint); extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint); |
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/* quota ops */ |
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extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint); |
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extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t, uint, struct qc_dqblk *); extern int xfs_qm_scall_getquota_next(struct xfs_mount *, xfs_dqid_t *, uint, struct qc_dqblk *); |
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extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint, |
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struct qc_dqblk *); |
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extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint); extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint); |
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static inline struct xfs_def_quota * xfs_get_defquota(struct xfs_dquot *dqp, struct xfs_quotainfo *qi) { struct xfs_def_quota *defq; if (XFS_QM_ISUDQ(dqp)) defq = &qi->qi_usr_default; else if (XFS_QM_ISGDQ(dqp)) defq = &qi->qi_grp_default; else { ASSERT(XFS_QM_ISPDQ(dqp)); defq = &qi->qi_prj_default; } return defq; } |
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#endif /* __XFS_QM_H__ */ |