b136645116
Enable tracking of high and low watermarks for preallocation throttling of files under quota restrictions. These values are calculated when the quota limit is read from disk or modified and cached for later use by the throttling algorithm. The high watermark specifies when preallocation is disabled, the low watermark specifies when throttling is enabled and the low free space data structure contains precalculated low free space limits to serve as input to determine the level of throttling required. Note that the low free space data structure is based on the existing global low free space data structure with the exception of using three stages (5%, 3% and 1%) rather than five to reduce the impact of xfs_dquot memory overhead. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
126 lines
4.7 KiB
C
126 lines
4.7 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_QM_H__
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#define __XFS_QM_H__
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#include "xfs_dquot_item.h"
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#include "xfs_dquot.h"
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#include "xfs_quota_priv.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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* This defines the unit of allocation of dquots.
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* Currently, it is just one file system block, and a 4K blk contains 30
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* (136 * 30 = 4080) dquots. It's probably not worth trying to make
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* this more dynamic.
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* XXXsup However, if this number is changed, we have to make sure that we don't
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* implicitly assume that we do allocations in chunks of a single filesystem
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* block in the dquot/xqm code.
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*/
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#define XFS_DQUOT_CLUSTER_SIZE_FSB (xfs_filblks_t)1
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/*
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* Various quota information for individual filesystems.
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* The mount structure keeps a pointer to this.
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*/
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typedef struct xfs_quotainfo {
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struct radix_tree_root qi_uquota_tree;
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struct radix_tree_root qi_gquota_tree;
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struct mutex qi_tree_lock;
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xfs_inode_t *qi_uquotaip; /* user quota inode */
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xfs_inode_t *qi_gquotaip; /* group quota inode */
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struct list_head qi_lru_list;
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struct mutex qi_lru_lock;
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int qi_lru_count;
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int qi_dquots;
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time_t qi_btimelimit; /* limit for blks timer */
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time_t qi_itimelimit; /* limit for inodes timer */
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time_t qi_rtbtimelimit;/* limit for rt blks timer */
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xfs_qwarncnt_t qi_bwarnlimit; /* limit for blks warnings */
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xfs_qwarncnt_t qi_iwarnlimit; /* limit for inodes warnings */
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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 */
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uint qi_dqperchunk; /* # ondisk dqs in above chunk */
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xfs_qcnt_t qi_bhardlimit; /* default data blk hard limit */
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xfs_qcnt_t qi_bsoftlimit; /* default data blk soft limit */
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xfs_qcnt_t qi_ihardlimit; /* default inode count hard limit */
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xfs_qcnt_t qi_isoftlimit; /* default inode count soft limit */
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xfs_qcnt_t qi_rtbhardlimit;/* default realtime blk hard limit */
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xfs_qcnt_t qi_rtbsoftlimit;/* default realtime blk soft limit */
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struct shrinker qi_shrinker;
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} xfs_quotainfo_t;
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#define XFS_DQUOT_TREE(qi, type) \
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((type & XFS_DQ_USER) ? \
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&((qi)->qi_uquota_tree) : \
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&((qi)->qi_gquota_tree))
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extern void xfs_trans_mod_dquot(xfs_trans_t *, xfs_dquot_t *, uint, long);
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extern int xfs_trans_reserve_quota_bydquots(xfs_trans_t *, xfs_mount_t *,
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xfs_dquot_t *, xfs_dquot_t *, long, long, uint);
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extern void xfs_trans_dqjoin(xfs_trans_t *, xfs_dquot_t *);
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extern void xfs_trans_log_dquot(xfs_trans_t *, xfs_dquot_t *);
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/*
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* We keep the usr and grp dquots separately so that locking will be easier
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* 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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*/
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#define XFS_QM_TRANS_MAXDQS 2
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typedef struct xfs_dquot_acct {
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xfs_dqtrx_t dqa_usrdquots[XFS_QM_TRANS_MAXDQS];
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xfs_dqtrx_t dqa_grpdquots[XFS_QM_TRANS_MAXDQS];
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} xfs_dquot_acct_t;
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/*
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* Users are allowed to have a usage exceeding their softlimit for
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* a period this long.
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*/
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#define XFS_QM_BTIMELIMIT (7 * 24*60*60) /* 1 week */
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#define XFS_QM_RTBTIMELIMIT (7 * 24*60*60) /* 1 week */
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#define XFS_QM_ITIMELIMIT (7 * 24*60*60) /* 1 week */
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#define XFS_QM_BWARNLIMIT 5
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#define XFS_QM_IWARNLIMIT 5
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#define XFS_QM_RTBWARNLIMIT 5
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extern void xfs_qm_destroy_quotainfo(xfs_mount_t *);
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extern int xfs_qm_quotacheck(xfs_mount_t *);
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extern int xfs_qm_write_sb_changes(xfs_mount_t *, __int64_t);
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/* dquot stuff */
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extern void xfs_qm_dqpurge_all(xfs_mount_t *, uint);
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extern void xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint);
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/* quota ops */
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extern int xfs_qm_scall_trunc_qfiles(xfs_mount_t *, uint);
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extern int xfs_qm_scall_getquota(xfs_mount_t *, xfs_dqid_t, uint,
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fs_disk_quota_t *);
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extern int xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
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fs_disk_quota_t *);
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extern int xfs_qm_scall_getqstat(xfs_mount_t *, fs_quota_stat_t *);
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extern int xfs_qm_scall_quotaon(xfs_mount_t *, uint);
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extern int xfs_qm_scall_quotaoff(xfs_mount_t *, uint);
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#endif /* __XFS_QM_H__ */
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