linux/fs/xfs/xfs_qm.h
Linus Torvalds ae90fb1420 xfs: update for 3.20-rc1
This update contains:
 o RENAME_EXCHANGE support
 o Rework of the superblock logging infrastructure
 o Rework of the XFS_IOCTL_SETXATTR implementation
 	- enables use inside user namespaces
 	- fixes inconsistencies setting extent size hints
 o fixes for missing buffer type annotations used in log recovery
 o more consolidation of libxfs headers
 o preparation patches for block based PNFS support
 o miscellaneous bug fixes and cleanups
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Merge tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs update from Dave Chinner:
 "This update contains:

   - RENAME_EXCHANGE support

   - Rework of the superblock logging infrastructure

   - Rework of the XFS_IOCTL_SETXATTR implementation
       * enables use inside user namespaces
       * fixes inconsistencies setting extent size hints

   - fixes for missing buffer type annotations used in log recovery

   - more consolidation of libxfs headers

   - preparation patches for block based PNFS support

   - miscellaneous bug fixes and cleanups"

* tag 'xfs-for-linus-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (37 commits)
  xfs: only trace buffer items if they exist
  xfs: report proper f_files in statfs if we overshoot imaxpct
  xfs: fix panic_mask documentation
  xfs: xfs_ioctl_setattr_check_projid can be static
  xfs: growfs should use synchronous transactions
  xfs: fix behaviour of XFS_IOC_FSSETXATTR on directories
  xfs: factor projid hint checking out of xfs_ioctl_setattr
  xfs: factor extsize hint checking out of xfs_ioctl_setattr
  xfs: XFS_IOCTL_SETXATTR can run in user namespaces
  xfs: kill xfs_ioctl_setattr behaviour mask
  xfs: disaggregate xfs_ioctl_setattr
  xfs: factor out xfs_ioctl_setattr transaciton preamble
  xfs: separate xflags from xfs_ioctl_setattr
  xfs: FSX_NONBLOCK is not used
  xfs: don't allocate an ioend for direct I/O completions
  xfs: change kmem_free to use generic kvfree()
  xfs: factor out a xfs_update_prealloc_flags() helper
  xfs: remove incorrect error negation in attr_multi ioctl
  xfs: set superblock buffer type correctly
  xfs: set buf types when converting extent formats
  ...
2015-02-10 16:15:17 -08:00

179 lines
5.9 KiB
C

/*
* 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_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__ */