[linux.git] / fs / xfs / xfs_qm.h

/*
 * 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 *);
extern int		xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t);

/* 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 fs_disk_quota *);
extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
					struct fs_disk_quota *);
extern int		xfs_qm_scall_getqstat(struct xfs_mount *,
					struct fs_quota_stat *);
extern int		xfs_qm_scall_getqstatv(struct xfs_mount *,
					struct fs_quota_statv *);
extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);

#endif /* __XFS_QM_H__ */
Commit	Line	Data
1da177e4	1	/*
4ce3121f NS	2	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
4ce3121f NS	3	* All Rights Reserved.
1da177e4	4	*
4ce3121f NS	5	* This program is free software; you can redistribute it and/or
4ce3121f NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	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"
1da177e4	23
1da177e4 LT	24	struct xfs_inode;
1da177e4 LT	25
a05931ce	26	extern struct kmem_zone *xfs_qm_dqtrxzone;
1da177e4	27
afbd123d JL	28	/*
	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.
	31	*/
	32	#define XFS_DQITER_MAP_SIZE 10
	33
	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)
	44
1da177e4 LT	45	/*
	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
	49	* this more dynamic.
	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.
	53	*/
	54	#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
1da177e4	55
1da177e4 LT	56	/*
	57	* Various quota information for individual filesystems.
	58	* The mount structure keeps a pointer to this.
	59	*/
	60	typedef struct xfs_quotainfo {
9f920f11 CH	61	struct radix_tree_root qi_uquota_tree;
9f920f11 CH	62	struct radix_tree_root qi_gquota_tree;
92f8ff73	63	struct radix_tree_root qi_pquota_tree;
9f920f11	64	struct mutex qi_tree_lock;
92f8ff73 CS	65	struct xfs_inode qi_uquotaip; / user quota inode */
	66	struct xfs_inode qi_gquotaip; / group quota inode */
	67	struct xfs_inode qi_pquotaip; / project quota inode */
cd56a39a	68	struct list_lru qi_lru;
3a25404b	69	int qi_dquots;
1da177e4 LT	70	time_t qi_btimelimit; /* limit for blks timer */
	71	time_t qi_itimelimit; /* limit for inodes timer */
	72	time_t qi_rtbtimelimit;/* limit for rt blks timer */
06d10dd9 NS	73	xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
	74	xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
	75	xfs_qwarncnt_t qi_rtbwarnlimit;/* limit for rt blks warnings */
a0b0b8a5	76	struct mutex qi_quotaofflock;/* to serialize quotaoff */
1da177e4 LT	77	xfs_filblks_t qi_dqchunklen; /* # BBs in a chunk of dqs */
	78	uint qi_dqperchunk; /* # ondisk dqs in above chunk */
	79	xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
	80	xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
	81	xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
	82	xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
	83	xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
	84	xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
f8739c3c	85	struct shrinker qi_shrinker;
1da177e4 LT	86	} xfs_quotainfo_t;
1da177e4 LT	87
329e0875 CS	88	static inline struct radix_tree_root *
	89	xfs_dquot_tree(
	90	struct xfs_quotainfo *qi,
	91	int type)
	92	{
	93	switch (type) {
	94	case XFS_DQ_USER:
	95	return &qi->qi_uquota_tree;
	96	case XFS_DQ_GROUP:
329e0875	97	return &qi->qi_gquota_tree;
92f8ff73 CS	98	case XFS_DQ_PROJ:
92f8ff73 CS	99	return &qi->qi_pquota_tree;
329e0875 CS	100	default:
	101	ASSERT(0);
	102	}
	103	return NULL;
	104	}
995961c4 CS	105
	106	static inline struct xfs_inode *
	107	xfs_dq_to_quota_inode(struct xfs_dquot *dqp)
	108	{
	109	switch (dqp->dq_flags & XFS_DQ_ALLTYPES) {
	110	case XFS_DQ_USER:
	111	return dqp->q_mount->m_quotainfo->qi_uquotaip;
	112	case XFS_DQ_GROUP:
995961c4	113	return dqp->q_mount->m_quotainfo->qi_gquotaip;
92f8ff73 CS	114	case XFS_DQ_PROJ:
92f8ff73 CS	115	return dqp->q_mount->m_quotainfo->qi_pquotaip;
995961c4 CS	116	default:
	117	ASSERT(0);
	118	}
	119	return NULL;
	120	}
	121
113a5683 CS	122	extern void xfs_trans_mod_dquot(struct xfs_trans *,
	123	struct xfs_dquot *, uint, long);
	124	extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
	125	struct xfs_mount , struct xfs_dquot ,
92f8ff73 CS	126	struct xfs_dquot , struct xfs_dquot ,
92f8ff73 CS	127	long, long, uint);
113a5683 CS	128	extern void xfs_trans_dqjoin(struct xfs_trans , struct xfs_dquot );
113a5683 CS	129	extern void xfs_trans_log_dquot(struct xfs_trans , struct xfs_dquot );
1da177e4 LT	130
1da177e4 LT	131	/*
92f8ff73 CS	132	* We keep the usr, grp, and prj dquots separately so that locking will be
92f8ff73 CS	133	* easier to do at commit time. All transactions that we know of at this point
1da177e4 LT	134	* affect no more than two dquots of one type. Hence, the TRANS_MAXDQS value.
1da177e4 LT	135	*/
0e6436d9 CS	136	enum {
	137	XFS_QM_TRANS_USR = 0,
	138	XFS_QM_TRANS_GRP,
92f8ff73	139	XFS_QM_TRANS_PRJ,
0e6436d9 CS	140	XFS_QM_TRANS_DQTYPES
0e6436d9 CS	141	};
1da177e4	142	#define XFS_QM_TRANS_MAXDQS 2
0e6436d9 CS	143	struct xfs_dquot_acct {
	144	struct xfs_dqtrx dqs[XFS_QM_TRANS_DQTYPES][XFS_QM_TRANS_MAXDQS];
	145	};
1da177e4 LT	146
	147	/*
	148	* Users are allowed to have a usage exceeding their softlimit for
	149	* a period this long.
	150	*/
	151	#define XFS_QM_BTIMELIMIT (7 * 246060) /* 1 week */
	152	#define XFS_QM_RTBTIMELIMIT (7 * 246060) /* 1 week */
	153	#define XFS_QM_ITIMELIMIT (7 * 246060) /* 1 week */
	154
	155	#define XFS_QM_BWARNLIMIT 5
	156	#define XFS_QM_IWARNLIMIT 5
06d10dd9	157	#define XFS_QM_RTBWARNLIMIT 5
1da177e4	158
113a5683	159	extern void xfs_qm_destroy_quotainfo(struct xfs_mount *);
113a5683	160	extern int xfs_qm_write_sb_changes(struct xfs_mount *, __int64_t);
1da177e4 LT	161
1da177e4 LT	162	/* dquot stuff */
113a5683 CS	163	extern void xfs_qm_dqpurge_all(struct xfs_mount *, uint);
113a5683 CS	164	extern void xfs_qm_dqrele_all_inodes(struct xfs_mount *, uint);
1da177e4	165
fcafb71b	166	/* quota ops */
113a5683 CS	167	extern int xfs_qm_scall_trunc_qfiles(struct xfs_mount *, uint);
	168	extern int xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
	169	uint, struct fs_disk_quota *);
b1366451	170	extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
113a5683 CS	171	struct fs_disk_quota *);
	172	extern int xfs_qm_scall_getqstat(struct xfs_mount *,
	173	struct fs_quota_stat *);
5d5e3d57 CS	174	extern int xfs_qm_scall_getqstatv(struct xfs_mount *,
5d5e3d57 CS	175	struct fs_quota_statv *);
113a5683 CS	176	extern int xfs_qm_scall_quotaon(struct xfs_mount *, uint);
113a5683 CS	177	extern int xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
fcafb71b	178
1da177e4	179	#endif /* __XFS_QM_H__ */