/*
* Copyright (c) 2000-2003 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
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_alloc.h"
#include "xfs_quota.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_inode.h"
#include "xfs_bmap.h"
#include "xfs_rtalloc.h"
#include "xfs_error.h"
#include "xfs_itable.h"
#include "xfs_attr.h"
#include "xfs_buf_item.h"
#include "xfs_trans_space.h"
#include "xfs_trans_priv.h"
#include "xfs_qm.h"
#include "xfs_cksum.h"
#include "xfs_trace.h"
/*
* Lock order:
*
* ip->i_lock
* qi->qi_tree_lock
* dquot->q_qlock (xfs_dqlock() and friends)
* dquot->q_flush (xfs_dqflock() and friends)
* qi->qi_lru_lock
*
* If two dquots need to be locked the order is user before group/project,
* otherwise by the lowest id first, see xfs_dqlock2.
*/
#ifdef DEBUG
xfs_buftarg_t *xfs_dqerror_target;
int xfs_do_dqerror;
int xfs_dqreq_num;
int xfs_dqerror_mod = 33;
#endif
struct kmem_zone *xfs_qm_dqtrxzone;
static struct kmem_zone *xfs_qm_dqzone;
static struct lock_class_key xfs_dquot_other_class;
/*
* This is called to free all the memory associated with a dquot
*/
void
xfs_qm_dqdestroy(
xfs_dquot_t *dqp)
{
ASSERT(list_empty(&dqp->q_lru));
mutex_destroy(&dqp->q_qlock);
kmem_zone_free(xfs_qm_dqzone, dqp);
XFS_STATS_DEC(xs_qm_dquot);
}
/*
* If default limits are in force, push them into the dquot now.
* We overwrite the dquot limits only if they are zero and this
* is not the root dquot.
*/
void
xfs_qm_adjust_dqlimits(
struct xfs_mount *mp,
struct xfs_dquot *dq)
{
struct xfs_quotainfo *q = mp->m_quotainfo;
struct xfs_disk_dquot *d = &dq->q_core;
int prealloc = 0;
ASSERT(d->d_id);
if (q->qi_bsoftlimit && !d->d_blk_softlimit) {
d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit);
prealloc = 1;
}
if (q->qi_bhardlimit && !d->d_blk_hardlimit) {
d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit);
prealloc = 1;
}
if (q->qi_isoftlimit && !d->d_ino_softlimit)
d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit);
if (q->qi_ihardlimit && !d->d_ino_hardlimit)
d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit);
if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit)
d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit);
if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit)
d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit);
if (prealloc)