err.no Git - linux-2.6/blob - fs/xfs/quota/xfs_quota_priv.h

   1 /*
   2  * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32 #ifndef __XFS_QUOTA_PRIV_H__
  33 #define __XFS_QUOTA_PRIV_H__
  34
  35 /*
  36  * Number of bmaps that we ask from bmapi when doing a quotacheck.
  37  * We make this restriction to keep the memory usage to a minimum.
  38  */
  39 #define XFS_DQITER_MAP_SIZE     10
  40
  41 /* Number of dquots that fit in to a dquot block */
  42 #define XFS_QM_DQPERBLK(mp)     ((mp)->m_quotainfo->qi_dqperchunk)
  43
  44 #define XFS_ISLOCKED_INODE(ip)          (ismrlocked(&(ip)->i_lock, \
  45                                             MR_UPDATE | MR_ACCESS) != 0)
  46 #define XFS_ISLOCKED_INODE_EXCL(ip)     (ismrlocked(&(ip)->i_lock, \
  47                                             MR_UPDATE) != 0)
  48
  49 #define XFS_DQ_IS_ADDEDTO_TRX(t, d)     ((d)->q_transp == (t))
  50
  51 #define XFS_QI_MPLRECLAIMS(mp)  ((mp)->m_quotainfo->qi_dqreclaims)
  52 #define XFS_QI_UQIP(mp)         ((mp)->m_quotainfo->qi_uquotaip)
  53 #define XFS_QI_GQIP(mp)         ((mp)->m_quotainfo->qi_gquotaip)
  54 #define XFS_QI_DQCHUNKLEN(mp)   ((mp)->m_quotainfo->qi_dqchunklen)
  55 #define XFS_QI_BTIMELIMIT(mp)   ((mp)->m_quotainfo->qi_btimelimit)
  56 #define XFS_QI_RTBTIMELIMIT(mp) ((mp)->m_quotainfo->qi_rtbtimelimit)
  57 #define XFS_QI_ITIMELIMIT(mp)   ((mp)->m_quotainfo->qi_itimelimit)
  58 #define XFS_QI_BWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_bwarnlimit)
  59 #define XFS_QI_RTBWARNLIMIT(mp) ((mp)->m_quotainfo->qi_rtbwarnlimit)
  60 #define XFS_QI_IWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_iwarnlimit)
  61 #define XFS_QI_QOFFLOCK(mp)     ((mp)->m_quotainfo->qi_quotaofflock)
  62
  63 #define XFS_QI_MPL_LIST(mp)     ((mp)->m_quotainfo->qi_dqlist)
  64 #define XFS_QI_MPLLOCK(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_lock)
  65 #define XFS_QI_MPLNEXT(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_next)
  66 #define XFS_QI_MPLNDQUOTS(mp)   ((mp)->m_quotainfo->qi_dqlist.qh_nelems)
  67
  68 #define XQMLCK(h)                       (mutex_lock(&((h)->qh_lock), PINOD))
  69 #define XQMUNLCK(h)                     (mutex_unlock(&((h)->qh_lock)))
  70 #ifdef DEBUG
  71 struct xfs_dqhash;
  72 static inline int XQMISLCKD(struct xfs_dqhash *h)
  73 {
  74         if (mutex_trylock(&h->qh_lock)) {
  75                 mutex_unlock(&h->qh_lock);
  76                 return 0;
  77         }
  78         return 1;
  79 }
  80 #endif
  81
  82 #define XFS_DQ_HASH_LOCK(h)             XQMLCK(h)
  83 #define XFS_DQ_HASH_UNLOCK(h)           XQMUNLCK(h)
  84 #define XFS_DQ_IS_HASH_LOCKED(h)        XQMISLCKD(h)
  85
  86 #define xfs_qm_mplist_lock(mp)          XQMLCK(&(XFS_QI_MPL_LIST(mp)))
  87 #define xfs_qm_mplist_unlock(mp)        XQMUNLCK(&(XFS_QI_MPL_LIST(mp)))
  88 #define XFS_QM_IS_MPLIST_LOCKED(mp)     XQMISLCKD(&(XFS_QI_MPL_LIST(mp)))
  89
  90 #define xfs_qm_freelist_lock(qm)        XQMLCK(&((qm)->qm_dqfreelist))
  91 #define xfs_qm_freelist_unlock(qm)      XQMUNLCK(&((qm)->qm_dqfreelist))
  92 #define XFS_QM_IS_FREELIST_LOCKED(qm)   XQMISLCKD(&((qm)->qm_dqfreelist))
  93
  94 /*
  95  * Hash into a bucket in the dquot hash table, based on <mp, id>.
  96  */
  97 #define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
  98                                  (__psunsigned_t)(id)) & \
  99                                 (xfs_Gqm->qm_dqhashmask - 1))
 100 #define XFS_DQ_HASH(mp, id, type)   (type == XFS_DQ_USER ? \
 101                                      (xfs_Gqm->qm_usr_dqhtable + \
 102                                       XFS_DQ_HASHVAL(mp, id)) : \
 103                                      (xfs_Gqm->qm_grp_dqhtable + \
 104                                       XFS_DQ_HASHVAL(mp, id)))
 105 #define XFS_IS_DQTYPE_ON(mp, type)   (type == XFS_DQ_USER ? \
 106                                         XFS_IS_UQUOTA_ON(mp) : \
 107                                         XFS_IS_OQUOTA_ON(mp))
 108 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
 109         !dqp->q_core.d_blk_hardlimit && \
 110         !dqp->q_core.d_blk_softlimit && \
 111         !dqp->q_core.d_rtb_hardlimit && \
 112         !dqp->q_core.d_rtb_softlimit && \
 113         !dqp->q_core.d_ino_hardlimit && \
 114         !dqp->q_core.d_ino_softlimit && \
 115         !dqp->q_core.d_bcount && \
 116         !dqp->q_core.d_rtbcount && \
 117         !dqp->q_core.d_icount)
 118
 119 #define HL_PREVP        dq_hashlist.ql_prevp
 120 #define HL_NEXT         dq_hashlist.ql_next
 121 #define MPL_PREVP       dq_mplist.ql_prevp
 122 #define MPL_NEXT        dq_mplist.ql_next
 123
 124
 125 #define _LIST_REMOVE(h, dqp, PVP, NXT)                          \
 126         {                                                       \
 127                  xfs_dquot_t *d;                                \
 128                  if (((d) = (dqp)->NXT))                                \
 129                          (d)->PVP = (dqp)->PVP;                 \
 130                  *((dqp)->PVP) = d;                             \
 131                  (dqp)->NXT = NULL;                             \
 132                  (dqp)->PVP = NULL;                             \
 133                  (h)->qh_version++;                             \
 134                  (h)->qh_nelems--;                              \
 135         }
 136
 137 #define _LIST_INSERT(h, dqp, PVP, NXT)                          \
 138         {                                                       \
 139                  xfs_dquot_t *d;                                \
 140                  if (((d) = (h)->qh_next))                      \
 141                          (d)->PVP = &((dqp)->NXT);              \
 142                  (dqp)->NXT = d;                                \
 143                  (dqp)->PVP = &((h)->qh_next);                  \
 144                  (h)->qh_next = dqp;                            \
 145                  (h)->qh_version++;                             \
 146                  (h)->qh_nelems++;                              \
 147          }
 148
 149 #define FOREACH_DQUOT_IN_MP(dqp, mp) \
 150         for ((dqp) = XFS_QI_MPLNEXT(mp); (dqp) != NULL; (dqp) = (dqp)->MPL_NEXT)
 151
 152 #define FOREACH_DQUOT_IN_FREELIST(dqp, qlist)   \
 153 for ((dqp) = (qlist)->qh_next; (dqp) != (xfs_dquot_t *)(qlist); \
 154      (dqp) = (dqp)->dq_flnext)
 155
 156 #define XQM_HASHLIST_INSERT(h, dqp)     \
 157          _LIST_INSERT(h, dqp, HL_PREVP, HL_NEXT)
 158
 159 #define XQM_FREELIST_INSERT(h, dqp)     \
 160          xfs_qm_freelist_append(h, dqp)
 161
 162 #define XQM_MPLIST_INSERT(h, dqp)       \
 163          _LIST_INSERT(h, dqp, MPL_PREVP, MPL_NEXT)
 164
 165 #define XQM_HASHLIST_REMOVE(h, dqp)     \
 166          _LIST_REMOVE(h, dqp, HL_PREVP, HL_NEXT)
 167 #define XQM_FREELIST_REMOVE(dqp)        \
 168          xfs_qm_freelist_unlink(dqp)
 169 #define XQM_MPLIST_REMOVE(h, dqp)       \
 170         { _LIST_REMOVE(h, dqp, MPL_PREVP, MPL_NEXT); \
 171           XFS_QI_MPLRECLAIMS((dqp)->q_mount)++; }
 172
 173 #define XFS_DQ_IS_LOGITEM_INITD(dqp)    ((dqp)->q_logitem.qli_dquot == (dqp))
 174
 175 #define XFS_QM_DQP_TO_DQACCT(tp, dqp)   (XFS_QM_ISUDQ(dqp) ? \
 176                                          (tp)->t_dqinfo->dqa_usrdquots : \
 177                                          (tp)->t_dqinfo->dqa_grpdquots)
 178 #define XFS_IS_SUSER_DQUOT(dqp)         \
 179         (!((dqp)->q_core.d_id))
 180
 181 #define XFS_PURGE_INODE(ip)             \
 182         IRELE(ip);
 183
 184 #define DQFLAGTO_TYPESTR(d)     (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \
 185                                  (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \
 186                                  (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???")))
 187 #define DQFLAGTO_DIRTYSTR(d)    (XFS_DQ_IS_DIRTY(d) ? "DIRTY" : "NOTDIRTY")
 188
 189 #endif  /* __XFS_QUOTA_PRIV_H__ */