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_DQ_IS_ADDEDTO_TRX(t, d)     ((d)->q_transp == (t))
  31
  32 #define XFS_QI_MPLRECLAIMS(mp)  ((mp)->m_quotainfo->qi_dqreclaims)
  33 #define XFS_QI_UQIP(mp)         ((mp)->m_quotainfo->qi_uquotaip)
  34 #define XFS_QI_GQIP(mp)         ((mp)->m_quotainfo->qi_gquotaip)
  35 #define XFS_QI_DQCHUNKLEN(mp)   ((mp)->m_quotainfo->qi_dqchunklen)
  36 #define XFS_QI_BTIMELIMIT(mp)   ((mp)->m_quotainfo->qi_btimelimit)
  37 #define XFS_QI_RTBTIMELIMIT(mp) ((mp)->m_quotainfo->qi_rtbtimelimit)
  38 #define XFS_QI_ITIMELIMIT(mp)   ((mp)->m_quotainfo->qi_itimelimit)
  39 #define XFS_QI_BWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_bwarnlimit)
  40 #define XFS_QI_RTBWARNLIMIT(mp) ((mp)->m_quotainfo->qi_rtbwarnlimit)
  41 #define XFS_QI_IWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_iwarnlimit)
  42 #define XFS_QI_QOFFLOCK(mp)     ((mp)->m_quotainfo->qi_quotaofflock)
  43
  44 #define XFS_QI_MPL_LIST(mp)     ((mp)->m_quotainfo->qi_dqlist)
  45 #define XFS_QI_MPLNEXT(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_next)
  46 #define XFS_QI_MPLNDQUOTS(mp)   ((mp)->m_quotainfo->qi_dqlist.qh_nelems)
  47
  48 #define xfs_qm_mplist_lock(mp) \
  49         mutex_lock(&(XFS_QI_MPL_LIST(mp).qh_lock))
  50 #define xfs_qm_mplist_nowait(mp) \
  51         mutex_trylock(&(XFS_QI_MPL_LIST(mp).qh_lock))
  52 #define xfs_qm_mplist_unlock(mp) \
  53         mutex_unlock(&(XFS_QI_MPL_LIST(mp).qh_lock))
  54 #define XFS_QM_IS_MPLIST_LOCKED(mp) \
  55         mutex_is_locked(&(XFS_QI_MPL_LIST(mp).qh_lock))
  56
  57 #define xfs_qm_freelist_lock(qm) \
  58         mutex_lock(&((qm)->qm_dqfreelist.qh_lock))
  59 #define xfs_qm_freelist_lock_nowait(qm) \
  60         mutex_trylock(&((qm)->qm_dqfreelist.qh_lock))
  61 #define xfs_qm_freelist_unlock(qm) \
  62         mutex_unlock(&((qm)->qm_dqfreelist.qh_lock))
  63
  64 /*
  65  * Hash into a bucket in the dquot hash table, based on <mp, id>.
  66  */
  67 #define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
  68                                  (__psunsigned_t)(id)) & \
  69                                 (xfs_Gqm->qm_dqhashmask - 1))
  70 #define XFS_DQ_HASH(mp, id, type)   (type == XFS_DQ_USER ? \
  71                                      (xfs_Gqm->qm_usr_dqhtable + \
  72                                       XFS_DQ_HASHVAL(mp, id)) : \
  73                                      (xfs_Gqm->qm_grp_dqhtable + \
  74                                       XFS_DQ_HASHVAL(mp, id)))
  75 #define XFS_IS_DQTYPE_ON(mp, type)   (type == XFS_DQ_USER ? \
  76                                         XFS_IS_UQUOTA_ON(mp) : \
  77                                         XFS_IS_OQUOTA_ON(mp))
  78 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
  79         !dqp->q_core.d_blk_hardlimit && \
  80         !dqp->q_core.d_blk_softlimit && \
  81         !dqp->q_core.d_rtb_hardlimit && \
  82         !dqp->q_core.d_rtb_softlimit && \
  83         !dqp->q_core.d_ino_hardlimit && \
  84         !dqp->q_core.d_ino_softlimit && \
  85         !dqp->q_core.d_bcount && \
  86         !dqp->q_core.d_rtbcount && \
  87         !dqp->q_core.d_icount)
  88
  89 #define HL_PREVP        dq_hashlist.ql_prevp
  90 #define HL_NEXT         dq_hashlist.ql_next
  91 #define MPL_PREVP       dq_mplist.ql_prevp
  92 #define MPL_NEXT        dq_mplist.ql_next
  93
  94
  95 #define _LIST_REMOVE(h, dqp, PVP, NXT)                          \
  96         {                                                       \
  97                  xfs_dquot_t *d;                                \
  98                  if (((d) = (dqp)->NXT))                                \
  99                          (d)->PVP = (dqp)->PVP;                 \
 100                  *((dqp)->PVP) = d;                             \
 101                  (dqp)->NXT = NULL;                             \
 102                  (dqp)->PVP = NULL;                             \
 103                  (h)->qh_version++;                             \
 104                  (h)->qh_nelems--;                              \
 105         }
 106
 107 #define _LIST_INSERT(h, dqp, PVP, NXT)                          \
 108         {                                                       \
 109                  xfs_dquot_t *d;                                \
 110                  if (((d) = (h)->qh_next))                      \
 111                          (d)->PVP = &((dqp)->NXT);              \
 112                  (dqp)->NXT = d;                                \
 113                  (dqp)->PVP = &((h)->qh_next);                  \
 114                  (h)->qh_next = dqp;                            \
 115                  (h)->qh_version++;                             \
 116                  (h)->qh_nelems++;                              \
 117          }
 118
 119 #define FOREACH_DQUOT_IN_MP(dqp, mp) \
 120         for ((dqp) = XFS_QI_MPLNEXT(mp); (dqp) != NULL; (dqp) = (dqp)->MPL_NEXT)
 121
 122 #define FOREACH_DQUOT_IN_FREELIST(dqp, qlist)   \
 123 for ((dqp) = (qlist)->qh_next; (dqp) != (xfs_dquot_t *)(qlist); \
 124      (dqp) = (dqp)->dq_flnext)
 125
 126 #define XQM_HASHLIST_INSERT(h, dqp)     \
 127          _LIST_INSERT(h, dqp, HL_PREVP, HL_NEXT)
 128
 129 #define XQM_FREELIST_INSERT(h, dqp)     \
 130          xfs_qm_freelist_append(h, dqp)
 131
 132 #define XQM_MPLIST_INSERT(h, dqp)       \
 133          _LIST_INSERT(h, dqp, MPL_PREVP, MPL_NEXT)
 134
 135 #define XQM_HASHLIST_REMOVE(h, dqp)     \
 136          _LIST_REMOVE(h, dqp, HL_PREVP, HL_NEXT)
 137 #define XQM_FREELIST_REMOVE(dqp)        \
 138          xfs_qm_freelist_unlink(dqp)
 139 #define XQM_MPLIST_REMOVE(h, dqp)       \
 140         { _LIST_REMOVE(h, dqp, MPL_PREVP, MPL_NEXT); \
 141           XFS_QI_MPLRECLAIMS((dqp)->q_mount)++; }
 142
 143 #define XFS_DQ_IS_LOGITEM_INITD(dqp)    ((dqp)->q_logitem.qli_dquot == (dqp))
 144
 145 #define XFS_QM_DQP_TO_DQACCT(tp, dqp)   (XFS_QM_ISUDQ(dqp) ? \
 146                                          (tp)->t_dqinfo->dqa_usrdquots : \
 147                                          (tp)->t_dqinfo->dqa_grpdquots)
 148 #define XFS_IS_SUSER_DQUOT(dqp)         \
 149         (!((dqp)->q_core.d_id))
 150
 151 #define DQFLAGTO_TYPESTR(d)     (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \
 152                                  (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \
 153                                  (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???")))
 154
 155 #endif  /* __XFS_QUOTA_PRIV_H__ */