release/src-rt-6.x/linux/linux-2.6/fs/xfs/quota/xfs_quota_priv.h

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   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.
  13  *
  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
  17  */
  18 #ifndef __XFS_QUOTA_PRIV_H__
  19 #define __XFS_QUOTA_PRIV_H__
  20
  21 /*
  22  * Number of bmaps that we ask from bmapi when doing a quotacheck.
  23  * We make this restriction to keep the memory usage to a minimum.
  24  */
  25 #define XFS_DQITER_MAP_SIZE     10
  26
  27 /* Number of dquots that fit in to a dquot block */
  28 #define XFS_QM_DQPERBLK(mp)     ((mp)->m_quotainfo->qi_dqperchunk)
  29
  30 #define XFS_ISLOCKED_INODE(ip)          (ismrlocked(&(ip)->i_lock, \
  31                                             MR_UPDATE | MR_ACCESS) != 0)
  32 #define XFS_ISLOCKED_INODE_EXCL(ip)     (ismrlocked(&(ip)->i_lock, \
  33                                             MR_UPDATE) != 0)
  34
  35 #define XFS_DQ_IS_ADDEDTO_TRX(t, d)     ((d)->q_transp == (t))
  36
  37 #define XFS_QI_MPLRECLAIMS(mp)  ((mp)->m_quotainfo->qi_dqreclaims)
  38 #define XFS_QI_UQIP(mp)         ((mp)->m_quotainfo->qi_uquotaip)
  39 #define XFS_QI_GQIP(mp)         ((mp)->m_quotainfo->qi_gquotaip)
  40 #define XFS_QI_DQCHUNKLEN(mp)   ((mp)->m_quotainfo->qi_dqchunklen)
  41 #define XFS_QI_BTIMELIMIT(mp)   ((mp)->m_quotainfo->qi_btimelimit)
  42 #define XFS_QI_RTBTIMELIMIT(mp) ((mp)->m_quotainfo->qi_rtbtimelimit)
  43 #define XFS_QI_ITIMELIMIT(mp)   ((mp)->m_quotainfo->qi_itimelimit)
  44 #define XFS_QI_BWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_bwarnlimit)
  45 #define XFS_QI_RTBWARNLIMIT(mp) ((mp)->m_quotainfo->qi_rtbwarnlimit)
  46 #define XFS_QI_IWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_iwarnlimit)
  47 #define XFS_QI_QOFFLOCK(mp)     ((mp)->m_quotainfo->qi_quotaofflock)
  48
  49 #define XFS_QI_MPL_LIST(mp)     ((mp)->m_quotainfo->qi_dqlist)
  50 #define XFS_QI_MPLLOCK(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_lock)
  51 #define XFS_QI_MPLNEXT(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_next)
  52 #define XFS_QI_MPLNDQUOTS(mp)   ((mp)->m_quotainfo->qi_dqlist.qh_nelems)
  53
  54 #define XQMLCK(h)                       (mutex_lock(&((h)->qh_lock)))
  55 #define XQMUNLCK(h)                     (mutex_unlock(&((h)->qh_lock)))
  56 #ifdef DEBUG
  57 struct xfs_dqhash;
  58 static inline int XQMISLCKD(struct xfs_dqhash *h)
  59 {
  60         if (mutex_trylock(&h->qh_lock)) {
  61                 mutex_unlock(&h->qh_lock);
  62                 return 0;
  63         }
  64         return 1;
  65 }
  66 #endif
  67
  68 #define XFS_DQ_HASH_LOCK(h)             XQMLCK(h)
  69 #define XFS_DQ_HASH_UNLOCK(h)           XQMUNLCK(h)
  70 #define XFS_DQ_IS_HASH_LOCKED(h)        XQMISLCKD(h)
  71
  72 #define xfs_qm_mplist_lock(mp)          XQMLCK(&(XFS_QI_MPL_LIST(mp)))
  73 #define xfs_qm_mplist_unlock(mp)        XQMUNLCK(&(XFS_QI_MPL_LIST(mp)))
  74 #define XFS_QM_IS_MPLIST_LOCKED(mp)     XQMISLCKD(&(XFS_QI_MPL_LIST(mp)))
  75
  76 #define xfs_qm_freelist_lock(qm)        XQMLCK(&((qm)->qm_dqfreelist))
  77 #define xfs_qm_freelist_unlock(qm)      XQMUNLCK(&((qm)->qm_dqfreelist))
  78
  79 /*
  80  * Hash into a bucket in the dquot hash table, based on <mp, id>.
  81  */
  82 #define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
  83                                  (__psunsigned_t)(id)) & \
  84                                 (xfs_Gqm->qm_dqhashmask - 1))
  85 #define XFS_DQ_HASH(mp, id, type)   (type == XFS_DQ_USER ? \
  86                                      (xfs_Gqm->qm_usr_dqhtable + \
  87                                       XFS_DQ_HASHVAL(mp, id)) : \
  88                                      (xfs_Gqm->qm_grp_dqhtable + \
  89                                       XFS_DQ_HASHVAL(mp, id)))
  90 #define XFS_IS_DQTYPE_ON(mp, type)   (type == XFS_DQ_USER ? \
  91                                         XFS_IS_UQUOTA_ON(mp) : \
  92                                         XFS_IS_OQUOTA_ON(mp))
  93 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
  94         !dqp->q_core.d_blk_hardlimit && \
  95         !dqp->q_core.d_blk_softlimit && \
  96         !dqp->q_core.d_rtb_hardlimit && \
  97         !dqp->q_core.d_rtb_softlimit && \
  98         !dqp->q_core.d_ino_hardlimit && \
  99         !dqp->q_core.d_ino_softlimit && \
 100         !dqp->q_core.d_bcount && \
 101         !dqp->q_core.d_rtbcount && \
 102         !dqp->q_core.d_icount)
 103
 104 #define HL_PREVP        dq_hashlist.ql_prevp
 105 #define HL_NEXT         dq_hashlist.ql_next
 106 #define MPL_PREVP       dq_mplist.ql_prevp
 107 #define MPL_NEXT        dq_mplist.ql_next
 108
 109
 110 #define _LIST_REMOVE(h, dqp, PVP, NXT)                          \
 111         {                                                       \
 112                  xfs_dquot_t *d;                                \
 113                  if (((d) = (dqp)->NXT))                                \
 114                          (d)->PVP = (dqp)->PVP;                 \
 115                  *((dqp)->PVP) = d;                             \
 116                  (dqp)->NXT = NULL;                             \
 117                  (dqp)->PVP = NULL;                             \
 118                  (h)->qh_version++;                             \
 119                  (h)->qh_nelems--;                              \
 120         }
 121
 122 #define _LIST_INSERT(h, dqp, PVP, NXT)                          \
 123         {                                                       \
 124                  xfs_dquot_t *d;                                \
 125                  if (((d) = (h)->qh_next))                      \
 126                          (d)->PVP = &((dqp)->NXT);              \
 127                  (dqp)->NXT = d;                                \
 128                  (dqp)->PVP = &((h)->qh_next);                  \
 129                  (h)->qh_next = dqp;                            \
 130                  (h)->qh_version++;                             \
 131                  (h)->qh_nelems++;                              \
 132          }
 133
 134 #define FOREACH_DQUOT_IN_MP(dqp, mp) \
 135         for ((dqp) = XFS_QI_MPLNEXT(mp); (dqp) != NULL; (dqp) = (dqp)->MPL_NEXT)
 136
 137 #define FOREACH_DQUOT_IN_FREELIST(dqp, qlist)   \
 138 for ((dqp) = (qlist)->qh_next; (dqp) != (xfs_dquot_t *)(qlist); \
 139      (dqp) = (dqp)->dq_flnext)
 140
 141 #define XQM_HASHLIST_INSERT(h, dqp)     \
 142          _LIST_INSERT(h, dqp, HL_PREVP, HL_NEXT)
 143
 144 #define XQM_FREELIST_INSERT(h, dqp)     \
 145          xfs_qm_freelist_append(h, dqp)
 146
 147 #define XQM_MPLIST_INSERT(h, dqp)       \
 148          _LIST_INSERT(h, dqp, MPL_PREVP, MPL_NEXT)
 149
 150 #define XQM_HASHLIST_REMOVE(h, dqp)     \
 151          _LIST_REMOVE(h, dqp, HL_PREVP, HL_NEXT)
 152 #define XQM_FREELIST_REMOVE(dqp)        \
 153          xfs_qm_freelist_unlink(dqp)
 154 #define XQM_MPLIST_REMOVE(h, dqp)       \
 155         { _LIST_REMOVE(h, dqp, MPL_PREVP, MPL_NEXT); \
 156           XFS_QI_MPLRECLAIMS((dqp)->q_mount)++; }
 157
 158 #define XFS_DQ_IS_LOGITEM_INITD(dqp)    ((dqp)->q_logitem.qli_dquot == (dqp))
 159
 160 #define XFS_QM_DQP_TO_DQACCT(tp, dqp)   (XFS_QM_ISUDQ(dqp) ? \
 161                                          (tp)->t_dqinfo->dqa_usrdquots : \
 162                                          (tp)->t_dqinfo->dqa_grpdquots)
 163 #define XFS_IS_SUSER_DQUOT(dqp)         \
 164         (!((dqp)->q_core.d_id))
 165
 166 #define XFS_PURGE_INODE(ip)             \
 167         IRELE(ip);
 168
 169 #define DQFLAGTO_TYPESTR(d)     (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \
 170                                  (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \
 171                                  (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???")))
 172
 173 #endif  /* __XFS_QUOTA_PRIV_H__ */