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_IWARNLIMIT(mp)   ((mp)->m_quotainfo->qi_iwarnlimit)
  60 #define XFS_QI_QOFFLOCK(mp)     ((mp)->m_quotainfo->qi_quotaofflock)
  61
  62 #define XFS_QI_MPL_LIST(mp)     ((mp)->m_quotainfo->qi_dqlist)
  63 #define XFS_QI_MPLLOCK(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_lock)
  64 #define XFS_QI_MPLNEXT(mp)      ((mp)->m_quotainfo->qi_dqlist.qh_next)
  65 #define XFS_QI_MPLNDQUOTS(mp)   ((mp)->m_quotainfo->qi_dqlist.qh_nelems)
  66
  67 #define XQMLCK(h)                       (mutex_lock(&((h)->qh_lock), PINOD))
  68 #define XQMUNLCK(h)                     (mutex_unlock(&((h)->qh_lock)))
  69 #ifdef DEBUG
  70 struct xfs_dqhash;
  71 static inline int XQMISLCKD(struct xfs_dqhash *h)
  72 {
  73         if (mutex_trylock(&h->qh_lock)) {
  74                 mutex_unlock(&h->qh_lock);
  75                 return 0;
  76         }
  77         return 1;
  78 }
  79 #endif
  80
  81 #define XFS_DQ_HASH_LOCK(h)             XQMLCK(h)
  82 #define XFS_DQ_HASH_UNLOCK(h)           XQMUNLCK(h)
  83 #define XFS_DQ_IS_HASH_LOCKED(h)        XQMISLCKD(h)
  84
  85 #define xfs_qm_mplist_lock(mp)          XQMLCK(&(XFS_QI_MPL_LIST(mp)))
  86 #define xfs_qm_mplist_unlock(mp)        XQMUNLCK(&(XFS_QI_MPL_LIST(mp)))
  87 #define XFS_QM_IS_MPLIST_LOCKED(mp)     XQMISLCKD(&(XFS_QI_MPL_LIST(mp)))
  88
  89 #define xfs_qm_freelist_lock(qm)        XQMLCK(&((qm)->qm_dqfreelist))
  90 #define xfs_qm_freelist_unlock(qm)      XQMUNLCK(&((qm)->qm_dqfreelist))
  91 #define XFS_QM_IS_FREELIST_LOCKED(qm)   XQMISLCKD(&((qm)->qm_dqfreelist))
  92
  93 /*
  94  * Hash into a bucket in the dquot hash table, based on <mp, id>.
  95  */
  96 #define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
  97                                  (__psunsigned_t)(id)) & \
  98                                 (xfs_Gqm->qm_dqhashmask - 1))
  99 #define XFS_DQ_HASH(mp, id, type)   (type == XFS_DQ_USER ? \
 100                                      (xfs_Gqm->qm_usr_dqhtable + \
 101                                       XFS_DQ_HASHVAL(mp, id)) : \
 102                                      (xfs_Gqm->qm_grp_dqhtable + \
 103                                       XFS_DQ_HASHVAL(mp, id)))
 104 #define XFS_IS_DQTYPE_ON(mp, type)   (type == XFS_DQ_USER ? \
 105                                       XFS_IS_UQUOTA_ON(mp):XFS_IS_GQUOTA_ON(mp))
 106 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
 107         !dqp->q_core.d_blk_hardlimit && \
 108         !dqp->q_core.d_blk_softlimit && \
 109         !dqp->q_core.d_rtb_hardlimit && \
 110         !dqp->q_core.d_rtb_softlimit && \
 111         !dqp->q_core.d_ino_hardlimit && \
 112         !dqp->q_core.d_ino_softlimit && \
 113         !dqp->q_core.d_bcount && \
 114         !dqp->q_core.d_rtbcount && \
 115         !dqp->q_core.d_icount)
 116
 117 #define HL_PREVP        dq_hashlist.ql_prevp
 118 #define HL_NEXT         dq_hashlist.ql_next
 119 #define MPL_PREVP       dq_mplist.ql_prevp
 120 #define MPL_NEXT        dq_mplist.ql_next
 121
 122
 123 #define _LIST_REMOVE(h, dqp, PVP, NXT)                          \
 124         {                                                       \
 125                  xfs_dquot_t *d;                                \
 126                  if (((d) = (dqp)->NXT))                                \
 127                          (d)->PVP = (dqp)->PVP;                 \
 128                  *((dqp)->PVP) = d;                             \
 129                  (dqp)->NXT = NULL;                             \
 130                  (dqp)->PVP = NULL;                             \
 131                  (h)->qh_version++;                             \
 132                  (h)->qh_nelems--;                              \
 133         }
 134
 135 #define _LIST_INSERT(h, dqp, PVP, NXT)                          \
 136         {                                                       \
 137                  xfs_dquot_t *d;                                \
 138                  if (((d) = (h)->qh_next))                      \
 139                          (d)->PVP = &((dqp)->NXT);              \
 140                  (dqp)->NXT = d;                                \
 141                  (dqp)->PVP = &((h)->qh_next);                  \
 142                  (h)->qh_next = dqp;                            \
 143                  (h)->qh_version++;                             \
 144                  (h)->qh_nelems++;                              \
 145          }
 146
 147 #define FOREACH_DQUOT_IN_MP(dqp, mp) \
 148         for ((dqp) = XFS_QI_MPLNEXT(mp); (dqp) != NULL; (dqp) = (dqp)->MPL_NEXT)
 149
 150 #define FOREACH_DQUOT_IN_FREELIST(dqp, qlist)   \
 151 for ((dqp) = (qlist)->qh_next; (dqp) != (xfs_dquot_t *)(qlist); \
 152      (dqp) = (dqp)->dq_flnext)
 153
 154 #define XQM_HASHLIST_INSERT(h, dqp)     \
 155          _LIST_INSERT(h, dqp, HL_PREVP, HL_NEXT)
 156
 157 #define XQM_FREELIST_INSERT(h, dqp)     \
 158          xfs_qm_freelist_append(h, dqp)
 159
 160 #define XQM_MPLIST_INSERT(h, dqp)       \
 161          _LIST_INSERT(h, dqp, MPL_PREVP, MPL_NEXT)
 162
 163 #define XQM_HASHLIST_REMOVE(h, dqp)     \
 164          _LIST_REMOVE(h, dqp, HL_PREVP, HL_NEXT)
 165 #define XQM_FREELIST_REMOVE(dqp)        \
 166          xfs_qm_freelist_unlink(dqp)
 167 #define XQM_MPLIST_REMOVE(h, dqp)       \
 168         { _LIST_REMOVE(h, dqp, MPL_PREVP, MPL_NEXT); \
 169           XFS_QI_MPLRECLAIMS((dqp)->q_mount)++; }
 170
 171 #define XFS_DQ_IS_LOGITEM_INITD(dqp)    ((dqp)->q_logitem.qli_dquot == (dqp))
 172
 173 #define XFS_QM_DQP_TO_DQACCT(tp, dqp)   (XFS_QM_ISUDQ(dqp) ? \
 174                                          (tp)->t_dqinfo->dqa_usrdquots : \
 175                                          (tp)->t_dqinfo->dqa_grpdquots)
 176 #define XFS_IS_SUSER_DQUOT(dqp)         \
 177         (!((dqp)->q_core.d_id))
 178
 179 #define XFS_PURGE_INODE(ip)             \
 180         {                               \
 181           vmap_t dqvmap;                \
 182           vnode_t *dqvp;                \
 183           dqvp = XFS_ITOV(ip);          \
 184           VMAP(dqvp, dqvmap);           \
 185           VN_RELE(dqvp);                \
 186         }
 187
 188 #define DQFLAGTO_TYPESTR(d)     (((d)->dq_flags & XFS_DQ_USER) ? "USR" : \
 189                                  (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : "???"))
 190 #define DQFLAGTO_DIRTYSTR(d)    (XFS_DQ_IS_DIRTY(d) ? "DIRTY" : "NOTDIRTY")
 191
 192 #endif  /* __XFS_QUOTA_PRIV_H__ */