fs/xfs/xfs_quota.h

   1 /*
   2  * Copyright (c) 2000-2005 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_H__
  19 #define __XFS_QUOTA_H__
  20
  21 struct xfs_trans;
  22
  23 /*
  24  * The ondisk form of a dquot structure.
  25  */
  26 #define XFS_DQUOT_MAGIC         0x4451          /* 'DQ' */
  27 #define XFS_DQUOT_VERSION       (u_int8_t)0x01  /* latest version number */
  28
  29 /*
  30  * uid_t and gid_t are hard-coded to 32 bits in the inode.
  31  * Hence, an 'id' in a dquot is 32 bits..
  32  */
  33 typedef __uint32_t      xfs_dqid_t;
  34
  35 /*
  36  * Even though users may not have quota limits occupying all 64-bits,
  37  * they may need 64-bit accounting. Hence, 64-bit quota-counters,
  38  * and quota-limits. This is a waste in the common case, but hey ...
  39  */
  40 typedef __uint64_t      xfs_qcnt_t;
  41 typedef __uint16_t      xfs_qwarncnt_t;
  42
  43 /*
  44  * This is the main portion of the on-disk representation of quota
  45  * information for a user. This is the q_core of the xfs_dquot_t that
  46  * is kept in kernel memory. We pad this with some more expansion room
  47  * to construct the on disk structure.
  48  */
  49 typedef struct  xfs_disk_dquot {
  50         __be16          d_magic;        /* dquot magic = XFS_DQUOT_MAGIC */
  51         __u8            d_version;      /* dquot version */
  52         __u8            d_flags;        /* XFS_DQ_USER/PROJ/GROUP */
  53         __be32          d_id;           /* user,project,group id */
  54         __be64          d_blk_hardlimit;/* absolute limit on disk blks */
  55         __be64          d_blk_softlimit;/* preferred limit on disk blks */
  56         __be64          d_ino_hardlimit;/* maximum # allocated inodes */
  57         __be64          d_ino_softlimit;/* preferred inode limit */
  58         __be64          d_bcount;       /* disk blocks owned by the user */
  59         __be64          d_icount;       /* inodes owned by the user */
  60         __be32          d_itimer;       /* zero if within inode limits if not,
  61                                            this is when we refuse service */
  62         __be32          d_btimer;       /* similar to above; for disk blocks */
  63         __be16          d_iwarns;       /* warnings issued wrt num inodes */
  64         __be16          d_bwarns;       /* warnings issued wrt disk blocks */
  65         __be32          d_pad0;         /* 64 bit align */
  66         __be64          d_rtb_hardlimit;/* absolute limit on realtime blks */
  67         __be64          d_rtb_softlimit;/* preferred limit on RT disk blks */
  68         __be64          d_rtbcount;     /* realtime blocks owned */
  69         __be32          d_rtbtimer;     /* similar to above; for RT disk blocks */
  70         __be16          d_rtbwarns;     /* warnings issued wrt RT disk blocks */
  71         __be16          d_pad;
  72 } xfs_disk_dquot_t;
  73
  74 /*
  75  * This is what goes on disk. This is separated from the xfs_disk_dquot because
  76  * carrying the unnecessary padding would be a waste of memory.
  77  */
  78 typedef struct xfs_dqblk {
  79         xfs_disk_dquot_t  dd_diskdq;    /* portion that lives incore as well */
  80         char              dd_fill[4];   /* filling for posterity */
  81
  82         /*
  83          * These two are only present on filesystems with the CRC bits set.
  84          */
  85         __be32            dd_crc;       /* checksum */
  86         __be64            dd_lsn;       /* last modification in log */
  87         uuid_t            dd_uuid;      /* location information */
  88 } xfs_dqblk_t;
  89
  90 #define XFS_DQUOT_CRC_OFF       offsetof(struct xfs_dqblk, dd_crc)
  91
  92 /*
  93  * flags for q_flags field in the dquot.
  94  */
  95 #define XFS_DQ_USER             0x0001          /* a user quota */
  96 #define XFS_DQ_PROJ             0x0002          /* project quota */
  97 #define XFS_DQ_GROUP            0x0004          /* a group quota */
  98 #define XFS_DQ_DIRTY            0x0008          /* dquot is dirty */
  99 #define XFS_DQ_FREEING          0x0010          /* dquot is beeing torn down */
 100
 101 #define XFS_DQ_ALLTYPES         (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP)
 102
 103 #define XFS_DQ_FLAGS \
 104         { XFS_DQ_USER,          "USER" }, \
 105         { XFS_DQ_PROJ,          "PROJ" }, \
 106         { XFS_DQ_GROUP,         "GROUP" }, \
 107         { XFS_DQ_DIRTY,         "DIRTY" }, \
 108         { XFS_DQ_FREEING,       "FREEING" }
 109
 110 /*
 111  * We have the possibility of all three quota types being active at once, and
 112  * hence free space modification requires modification of all three current
 113  * dquots in a single transaction. For this case we need to have a reservation
 114  * of at least 3 dquots.
 115  *
 116  * However, a chmod operation can change both UID and GID in a single
 117  * transaction, resulting in requiring {old, new} x {uid, gid} dquots to be
 118  * modified. Hence for this case we need to reserve space for at least 4 dquots.
 119  *
 120  * And in the worst case, there's a rename operation that can be modifying up to
 121  * 4 inodes with dquots attached to them. In reality, the only inodes that can
 122  * have their dquots modified are the source and destination directory inodes
 123  * due to directory name creation and removal. That can require space allocation
 124  * and/or freeing on both directory inodes, and hence all three dquots on each
 125  * inode can be modified. And if the directories are world writeable, all the
 126  * dquots can be unique and so 6 dquots can be modified....
 127  *
 128  * And, of course, we also need to take into account the dquot log format item
 129  * used to describe each dquot.
 130  */
 131 #define XFS_DQUOT_LOGRES(mp)    \
 132         ((sizeof(struct xfs_dq_logformat) + sizeof(struct xfs_disk_dquot)) * 6)
 133
 134 /*
 135  * These are the structures used to lay out dquots and quotaoff
 136  * records on the log. Quite similar to those of inodes.
 137  */
 138
 139 /*
 140  * log format struct for dquots.
 141  * The first two fields must be the type and size fitting into
 142  * 32 bits : log_recovery code assumes that.
 143  */
 144 typedef struct xfs_dq_logformat {
 145         __uint16_t              qlf_type;      /* dquot log item type */
 146         __uint16_t              qlf_size;      /* size of this item */
 147         xfs_dqid_t              qlf_id;        /* usr/grp/proj id : 32 bits */
 148         __int64_t               qlf_blkno;     /* blkno of dquot buffer */
 149         __int32_t               qlf_len;       /* len of dquot buffer */
 150         __uint32_t              qlf_boffset;   /* off of dquot in buffer */
 151 } xfs_dq_logformat_t;
 152
 153 /*
 154  * log format struct for QUOTAOFF records.
 155  * The first two fields must be the type and size fitting into
 156  * 32 bits : log_recovery code assumes that.
 157  * We write two LI_QUOTAOFF logitems per quotaoff, the last one keeps a pointer
 158  * to the first and ensures that the first logitem is taken out of the AIL
 159  * only when the last one is securely committed.
 160  */
 161 typedef struct xfs_qoff_logformat {
 162         unsigned short          qf_type;        /* quotaoff log item type */
 163         unsigned short          qf_size;        /* size of this item */
 164         unsigned int            qf_flags;       /* USR and/or GRP */
 165         char                    qf_pad[12];     /* padding for future */
 166 } xfs_qoff_logformat_t;
 167
 168
 169 /*
 170  * Disk quotas status in m_qflags, and also sb_qflags. 16 bits.
 171  */
 172 #define XFS_UQUOTA_ACCT 0x0001  /* user quota accounting ON */
 173 #define XFS_UQUOTA_ENFD 0x0002  /* user quota limits enforced */
 174 #define XFS_UQUOTA_CHKD 0x0004  /* quotacheck run on usr quotas */
 175 #define XFS_PQUOTA_ACCT 0x0008  /* project quota accounting ON */
 176 #define XFS_OQUOTA_ENFD 0x0010  /* other (grp/prj) quota limits enforced */
 177 #define XFS_OQUOTA_CHKD 0x0020  /* quotacheck run on other (grp/prj) quotas */
 178 #define XFS_GQUOTA_ACCT 0x0040  /* group quota accounting ON */
 179
 180 /*
 181  * Conversion to and from the combined OQUOTA flag (if necessary)
 182  * is done only in xfs_sb_qflags_to_disk() and xfs_sb_qflags_from_disk()
 183  */
 184 #define XFS_GQUOTA_ENFD 0x0080  /* group quota limits enforced */
 185 #define XFS_GQUOTA_CHKD 0x0100  /* quotacheck run on group quotas */
 186 #define XFS_PQUOTA_ENFD 0x0200  /* project quota limits enforced */
 187 #define XFS_PQUOTA_CHKD 0x0400  /* quotacheck run on project quotas */
 188
 189 /*
 190  * Quota Accounting/Enforcement flags
 191  */
 192 #define XFS_ALL_QUOTA_ACCT      \
 193                 (XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
 194 #define XFS_ALL_QUOTA_ENFD      \
 195                 (XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD | XFS_PQUOTA_ENFD)
 196 #define XFS_ALL_QUOTA_CHKD      \
 197                 (XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD | XFS_PQUOTA_CHKD)
 198
 199 #define XFS_IS_QUOTA_RUNNING(mp)        ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)
 200 #define XFS_IS_UQUOTA_RUNNING(mp)       ((mp)->m_qflags & XFS_UQUOTA_ACCT)
 201 #define XFS_IS_PQUOTA_RUNNING(mp)       ((mp)->m_qflags & XFS_PQUOTA_ACCT)
 202 #define XFS_IS_GQUOTA_RUNNING(mp)       ((mp)->m_qflags & XFS_GQUOTA_ACCT)
 203 #define XFS_IS_UQUOTA_ENFORCED(mp)      ((mp)->m_qflags & XFS_UQUOTA_ENFD)
 204 #define XFS_IS_GQUOTA_ENFORCED(mp)      ((mp)->m_qflags & XFS_GQUOTA_ENFD)
 205 #define XFS_IS_PQUOTA_ENFORCED(mp)      ((mp)->m_qflags & XFS_PQUOTA_ENFD)
 206
 207 /*
 208  * Incore only flags for quotaoff - these bits get cleared when quota(s)
 209  * are in the process of getting turned off. These flags are in m_qflags but
 210  * never in sb_qflags.
 211  */
 212 #define XFS_UQUOTA_ACTIVE       0x1000  /* uquotas are being turned off */
 213 #define XFS_GQUOTA_ACTIVE       0x2000  /* gquotas are being turned off */
 214 #define XFS_PQUOTA_ACTIVE       0x4000  /* pquotas are being turned off */
 215 #define XFS_ALL_QUOTA_ACTIVE    \
 216         (XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE | XFS_PQUOTA_ACTIVE)
 217
 218 /*
 219  * Checking XFS_IS_*QUOTA_ON() while holding any inode lock guarantees
 220  * quota will be not be switched off as long as that inode lock is held.
 221  */
 222 #define XFS_IS_QUOTA_ON(mp)     ((mp)->m_qflags & (XFS_UQUOTA_ACTIVE | \
 223                                                    XFS_GQUOTA_ACTIVE | \
 224                                                    XFS_PQUOTA_ACTIVE))
 225 #define XFS_IS_OQUOTA_ON(mp)    ((mp)->m_qflags & (XFS_GQUOTA_ACTIVE | \
 226                                                    XFS_PQUOTA_ACTIVE))
 227 #define XFS_IS_UQUOTA_ON(mp)    ((mp)->m_qflags & XFS_UQUOTA_ACTIVE)
 228 #define XFS_IS_GQUOTA_ON(mp)    ((mp)->m_qflags & XFS_GQUOTA_ACTIVE)
 229 #define XFS_IS_PQUOTA_ON(mp)    ((mp)->m_qflags & XFS_PQUOTA_ACTIVE)
 230
 231 /*
 232  * Flags to tell various functions what to do. Not all of these are meaningful
 233  * to a single function. None of these XFS_QMOPT_* flags are meant to have
 234  * persistent values (ie. their values can and will change between versions)
 235  */
 236 #define XFS_QMOPT_DQALLOC       0x0000002 /* alloc dquot ondisk if needed */
 237 #define XFS_QMOPT_UQUOTA        0x0000004 /* user dquot requested */
 238 #define XFS_QMOPT_PQUOTA        0x0000008 /* project dquot requested */
 239 #define XFS_QMOPT_FORCE_RES     0x0000010 /* ignore quota limits */
 240 #define XFS_QMOPT_SBVERSION     0x0000040 /* change superblock version num */
 241 #define XFS_QMOPT_DOWARN        0x0000400 /* increase warning cnt if needed */
 242 #define XFS_QMOPT_DQREPAIR      0x0001000 /* repair dquot if damaged */
 243 #define XFS_QMOPT_GQUOTA        0x0002000 /* group dquot requested */
 244 #define XFS_QMOPT_ENOSPC        0x0004000 /* enospc instead of edquot (prj) */
 245
 246 /*
 247  * flags to xfs_trans_mod_dquot to indicate which field needs to be
 248  * modified.
 249  */
 250 #define XFS_QMOPT_RES_REGBLKS   0x0010000
 251 #define XFS_QMOPT_RES_RTBLKS    0x0020000
 252 #define XFS_QMOPT_BCOUNT        0x0040000
 253 #define XFS_QMOPT_ICOUNT        0x0080000
 254 #define XFS_QMOPT_RTBCOUNT      0x0100000
 255 #define XFS_QMOPT_DELBCOUNT     0x0200000
 256 #define XFS_QMOPT_DELRTBCOUNT   0x0400000
 257 #define XFS_QMOPT_RES_INOS      0x0800000
 258
 259 /*
 260  * flags for dqalloc.
 261  */
 262 #define XFS_QMOPT_INHERIT       0x1000000
 263
 264 /*
 265  * flags to xfs_trans_mod_dquot.
 266  */
 267 #define XFS_TRANS_DQ_RES_BLKS   XFS_QMOPT_RES_REGBLKS
 268 #define XFS_TRANS_DQ_RES_RTBLKS XFS_QMOPT_RES_RTBLKS
 269 #define XFS_TRANS_DQ_RES_INOS   XFS_QMOPT_RES_INOS
 270 #define XFS_TRANS_DQ_BCOUNT     XFS_QMOPT_BCOUNT
 271 #define XFS_TRANS_DQ_DELBCOUNT  XFS_QMOPT_DELBCOUNT
 272 #define XFS_TRANS_DQ_ICOUNT     XFS_QMOPT_ICOUNT
 273 #define XFS_TRANS_DQ_RTBCOUNT   XFS_QMOPT_RTBCOUNT
 274 #define XFS_TRANS_DQ_DELRTBCOUNT XFS_QMOPT_DELRTBCOUNT
 275
 276
 277 #define XFS_QMOPT_QUOTALL       \
 278                 (XFS_QMOPT_UQUOTA | XFS_QMOPT_PQUOTA | XFS_QMOPT_GQUOTA)
 279 #define XFS_QMOPT_RESBLK_MASK   (XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_RES_RTBLKS)
 280
 281 #ifdef __KERNEL__
 282 /*
 283  * This check is done typically without holding the inode lock;
 284  * that may seem racy, but it is harmless in the context that it is used.
 285  * The inode cannot go inactive as long a reference is kept, and
 286  * therefore if dquot(s) were attached, they'll stay consistent.
 287  * If, for example, the ownership of the inode changes while
 288  * we didn't have the inode locked, the appropriate dquot(s) will be
 289  * attached atomically.
 290  */
 291 #define XFS_NOT_DQATTACHED(mp, ip) \
 292         ((XFS_IS_UQUOTA_ON(mp) && (ip)->i_udquot == NULL) || \
 293          (XFS_IS_GQUOTA_ON(mp) && (ip)->i_gdquot == NULL) || \
 294          (XFS_IS_PQUOTA_ON(mp) && (ip)->i_pdquot == NULL))
 295
 296 #define XFS_QM_NEED_QUOTACHECK(mp) \
 297         ((XFS_IS_UQUOTA_ON(mp) && \
 298                 (mp->m_sb.sb_qflags & XFS_UQUOTA_CHKD) == 0) || \
 299          (XFS_IS_GQUOTA_ON(mp) && \
 300                 (mp->m_sb.sb_qflags & XFS_GQUOTA_CHKD) == 0) || \
 301          (XFS_IS_PQUOTA_ON(mp) && \
 302                 (mp->m_sb.sb_qflags & XFS_PQUOTA_CHKD) == 0))
 303
 304 #define XFS_MOUNT_QUOTA_ALL     (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
 305                                  XFS_UQUOTA_CHKD|XFS_GQUOTA_ACCT|\
 306                                  XFS_GQUOTA_ENFD|XFS_GQUOTA_CHKD|\
 307                                  XFS_PQUOTA_ACCT|XFS_PQUOTA_ENFD|\
 308                                  XFS_PQUOTA_CHKD)
 309
 310
 311 /*
 312  * The structure kept inside the xfs_trans_t keep track of dquot changes
 313  * within a transaction and apply them later.
 314  */
 315 typedef struct xfs_dqtrx {
 316         struct xfs_dquot *qt_dquot;       /* the dquot this refers to */
 317         ulong           qt_blk_res;       /* blks reserved on a dquot */
 318         ulong           qt_blk_res_used;  /* blks used from the reservation */
 319         ulong           qt_ino_res;       /* inode reserved on a dquot */
 320         ulong           qt_ino_res_used;  /* inodes used from the reservation */
 321         long            qt_bcount_delta;  /* dquot blk count changes */
 322         long            qt_delbcnt_delta; /* delayed dquot blk count changes */
 323         long            qt_icount_delta;  /* dquot inode count changes */
 324         ulong           qt_rtblk_res;     /* # blks reserved on a dquot */
 325         ulong           qt_rtblk_res_used;/* # blks used from reservation */
 326         long            qt_rtbcount_delta;/* dquot realtime blk changes */
 327         long            qt_delrtb_delta;  /* delayed RT blk count changes */
 328 } xfs_dqtrx_t;
 329
 330 #ifdef CONFIG_XFS_QUOTA
 331 extern void xfs_trans_dup_dqinfo(struct xfs_trans *, struct xfs_trans *);
 332 extern void xfs_trans_free_dqinfo(struct xfs_trans *);
 333 extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *,
 334                 uint, long);
 335 extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *);
 336 extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *);
 337 extern int xfs_trans_reserve_quota_nblks(struct xfs_trans *,
 338                 struct xfs_inode *, long, long, uint);
 339 extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *,
 340                 struct xfs_mount *, struct xfs_dquot *,
 341                 struct xfs_dquot *, struct xfs_dquot *, long, long, uint);
 342
 343 extern int xfs_qm_vop_dqalloc(struct xfs_inode *, uid_t, gid_t, prid_t, uint,
 344                 struct xfs_dquot **, struct xfs_dquot **, struct xfs_dquot **);
 345 extern void xfs_qm_vop_create_dqattach(struct xfs_trans *, struct xfs_inode *,
 346                 struct xfs_dquot *, struct xfs_dquot *, struct xfs_dquot *);
 347 extern int xfs_qm_vop_rename_dqattach(struct xfs_inode **);
 348 extern struct xfs_dquot *xfs_qm_vop_chown(struct xfs_trans *,
 349                 struct xfs_inode *, struct xfs_dquot **, struct xfs_dquot *);
 350 extern int xfs_qm_vop_chown_reserve(struct xfs_trans *, struct xfs_inode *,
 351                 struct xfs_dquot *, struct xfs_dquot *,
 352                 struct xfs_dquot *, uint);
 353 extern int xfs_qm_dqattach(struct xfs_inode *, uint);
 354 extern int xfs_qm_dqattach_locked(struct xfs_inode *, uint);
 355 extern void xfs_qm_dqdetach(struct xfs_inode *);
 356 extern void xfs_qm_dqrele(struct xfs_dquot *);
 357 extern void xfs_qm_statvfs(struct xfs_inode *, struct kstatfs *);
 358 extern int xfs_qm_newmount(struct xfs_mount *, uint *, uint *);
 359 extern void xfs_qm_mount_quotas(struct xfs_mount *);
 360 extern void xfs_qm_unmount(struct xfs_mount *);
 361 extern void xfs_qm_unmount_quotas(struct xfs_mount *);
 362
 363 #else
 364 static inline int
 365 xfs_qm_vop_dqalloc(struct xfs_inode *ip, uid_t uid, gid_t gid, prid_t prid,
 366                 uint flags, struct xfs_dquot **udqp, struct xfs_dquot **gdqp,
 367                 struct xfs_dquot **pdqp)
 368 {
 369         *udqp = NULL;
 370         *gdqp = NULL;
 371         *pdqp = NULL;
 372         return 0;
 373 }
 374 #define xfs_trans_dup_dqinfo(tp, tp2)
 375 #define xfs_trans_free_dqinfo(tp)
 376 #define xfs_trans_mod_dquot_byino(tp, ip, fields, delta)
 377 #define xfs_trans_apply_dquot_deltas(tp)
 378 #define xfs_trans_unreserve_and_mod_dquots(tp)
 379 static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp,
 380                 struct xfs_inode *ip, long nblks, long ninos, uint flags)
 381 {
 382         return 0;
 383 }
 384 static inline int xfs_trans_reserve_quota_bydquots(struct xfs_trans *tp,
 385                 struct xfs_mount *mp, struct xfs_dquot *udqp,
 386                 struct xfs_dquot *gdqp, struct xfs_dquot *pdqp,
 387                 long nblks, long nions, uint flags)
 388 {
 389         return 0;
 390 }
 391 #define xfs_qm_vop_create_dqattach(tp, ip, u, g, p)
 392 #define xfs_qm_vop_rename_dqattach(it)                                  (0)
 393 #define xfs_qm_vop_chown(tp, ip, old, new)                              (NULL)
 394 #define xfs_qm_vop_chown_reserve(tp, ip, u, g, p, fl)                   (0)
 395 #define xfs_qm_dqattach(ip, fl)                                         (0)
 396 #define xfs_qm_dqattach_locked(ip, fl)                                  (0)
 397 #define xfs_qm_dqdetach(ip)
 398 #define xfs_qm_dqrele(d)
 399 #define xfs_qm_statvfs(ip, s)
 400 #define xfs_qm_newmount(mp, a, b)                                       (0)
 401 #define xfs_qm_mount_quotas(mp)
 402 #define xfs_qm_unmount(mp)
 403 #define xfs_qm_unmount_quotas(mp)
 404 #endif /* CONFIG_XFS_QUOTA */
 405
 406 #define xfs_trans_unreserve_quota_nblks(tp, ip, nblks, ninos, flags) \
 407         xfs_trans_reserve_quota_nblks(tp, ip, -(nblks), -(ninos), flags)
 408 #define xfs_trans_reserve_quota(tp, mp, ud, gd, pd, nb, ni, f) \
 409         xfs_trans_reserve_quota_bydquots(tp, mp, ud, gd, pd, nb, ni, \
 410                                 f | XFS_QMOPT_RES_REGBLKS)
 411
 412 extern int xfs_qm_dqcheck(struct xfs_mount *, xfs_disk_dquot_t *,
 413                                 xfs_dqid_t, uint, uint, char *);
 414 extern int xfs_mount_reset_sbqflags(struct xfs_mount *);
 415
 416 extern const struct xfs_buf_ops xfs_dquot_buf_ops;
 417
 418 #endif  /* __KERNEL__ */
 419 #endif  /* __XFS_QUOTA_H__ */