9 files changed, 360 insertions, 292 deletions

diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index 740d20d..46ce1e3 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -101,7 +101,7 @@ int xfs_dqerror_mod = 33;
  * is the d_id field. The idea is to fill in the entire q_core
  * when we read in the on disk dquot.
  */
-xfs_dquot_t *
+STATIC xfs_dquot_t *
 xfs_qm_dqinit(
 	xfs_mount_t  *mp,
 	xfs_dqid_t   id,
@@ -286,7 +286,9 @@ xfs_qm_adjust_dqlimits(
  * We also return 0 as the values of the timers in Q_GETQUOTA calls, when
  * enforcement's off.
  * In contrast, warnings are a little different in that they don't
- * 'automatically' get started when limits get exceeded.
+ * 'automatically' get started when limits get exceeded.  They do
+ * get reset to zero, however, when we find the count to be under
+ * the soft limit (they are only ever set non-zero via userspace).
  */
 void
 xfs_qm_adjust_dqtimers(
@@ -315,6 +317,8 @@ xfs_qm_adjust_dqtimers(
 				INT_GET(d->d_blk_hardlimit, ARCH_CONVERT)))) {
 			INT_SET(d->d_btimer, ARCH_CONVERT,
 				get_seconds() + XFS_QI_BTIMELIMIT(mp));
+		} else {
+			d->d_bwarns = 0;
 		}
 	} else {
 		if ((!d->d_blk_softlimit ||
@@ -336,6 +340,8 @@ xfs_qm_adjust_dqtimers(
 				INT_GET(d->d_ino_hardlimit, ARCH_CONVERT)))) {
 			INT_SET(d->d_itimer, ARCH_CONVERT,
 				get_seconds() + XFS_QI_ITIMELIMIT(mp));
+		} else {
+			d->d_iwarns = 0;
 		}
 	} else {
 		if ((!d->d_ino_softlimit ||
@@ -357,6 +363,8 @@ xfs_qm_adjust_dqtimers(
 				INT_GET(d->d_rtb_hardlimit, ARCH_CONVERT)))) {
 			INT_SET(d->d_rtbtimer, ARCH_CONVERT,
 				get_seconds() + XFS_QI_RTBTIMELIMIT(mp));
+		} else {
+			d->d_rtbwarns = 0;
 		}
 	} else {
 		if ((!d->d_rtb_softlimit ||
@@ -371,68 +379,6 @@ xfs_qm_adjust_dqtimers(
 }
 
 /*
- * Increment or reset warnings of a given dquot.
- */
-int
-xfs_qm_dqwarn(
-	xfs_disk_dquot_t	*d,
-	uint			flags)
-{
-	int	warned;
-
-	/*
-	 * root's limits are not real limits.
-	 */
-	if (!d->d_id)
-		return (0);
-
-	warned = 0;
-	if (INT_GET(d->d_blk_softlimit, ARCH_CONVERT) &&
-	    (INT_GET(d->d_bcount, ARCH_CONVERT) >=
-	     INT_GET(d->d_blk_softlimit, ARCH_CONVERT))) {
-		if (flags & XFS_QMOPT_DOWARN) {
-			INT_MOD(d->d_bwarns, ARCH_CONVERT, +1);
-			warned++;
-		}
-	} else {
-		if (!d->d_blk_softlimit ||
-		    (INT_GET(d->d_bcount, ARCH_CONVERT) <
-		     INT_GET(d->d_blk_softlimit, ARCH_CONVERT))) {
-			d->d_bwarns = 0;
-		}
-	}
-
-	if (INT_GET(d->d_ino_softlimit, ARCH_CONVERT) > 0 &&
-	    (INT_GET(d->d_icount, ARCH_CONVERT) >=
-	     INT_GET(d->d_ino_softlimit, ARCH_CONVERT))) {
-		if (flags & XFS_QMOPT_DOWARN) {
-			INT_MOD(d->d_iwarns, ARCH_CONVERT, +1);
-			warned++;
-		}
-	} else {
-		if (!d->d_ino_softlimit ||
-		    (INT_GET(d->d_icount, ARCH_CONVERT) <
-		     INT_GET(d->d_ino_softlimit, ARCH_CONVERT))) {
-			d->d_iwarns = 0;
-		}
-	}
-#ifdef QUOTADEBUG
-	if (INT_GET(d->d_iwarns, ARCH_CONVERT))
-		cmn_err(CE_DEBUG,
-			"--------@@Inode warnings running : %Lu >= %Lu",
-			INT_GET(d->d_icount, ARCH_CONVERT),
-			INT_GET(d->d_ino_softlimit, ARCH_CONVERT));
-	if (INT_GET(d->d_bwarns, ARCH_CONVERT))
-		cmn_err(CE_DEBUG,
-			"--------@@Blks warnings running : %Lu >= %Lu",
-			INT_GET(d->d_bcount, ARCH_CONVERT),
-			INT_GET(d->d_blk_softlimit, ARCH_CONVERT));
-#endif
-	return (warned);
-}
-
-
-/*
  * initialize a buffer full of dquots and log the whole thing
  */
 STATIC void
@@ -461,9 +407,9 @@ xfs_qm_init_dquot_blk(
 	for (i = 0; i < XFS_QM_DQPERBLK(mp); i++, d++, curid++)
 		xfs_qm_dqinit_core(curid, type, d);
 	xfs_trans_dquot_buf(tp, bp,
-			    type & XFS_DQ_USER ?
-			    XFS_BLI_UDQUOT_BUF :
-			    XFS_BLI_GDQUOT_BUF);
+			    (type & XFS_DQ_USER ? XFS_BLI_UDQUOT_BUF :
+			    ((type & XFS_DQ_PROJ) ? XFS_BLI_PDQUOT_BUF :
+			     XFS_BLI_GDQUOT_BUF)));
 	xfs_trans_log_buf(tp, bp, 0, BBTOB(XFS_QI_DQCHUNKLEN(mp)) - 1);
 }
 
@@ -544,8 +490,7 @@ xfs_qm_dqalloc(
 	 * the entire thing.
 	 */
 	xfs_qm_init_dquot_blk(tp, mp, INT_GET(dqp->q_core.d_id, ARCH_CONVERT),
-			      dqp->dq_flags & (XFS_DQ_USER|XFS_DQ_GROUP),
-			      bp);
+			      dqp->dq_flags & XFS_DQ_ALLTYPES, bp);
 
 	if ((error = xfs_bmap_finish(&tp, &flist, firstblock, &committed))) {
 		goto error1;
@@ -675,8 +620,7 @@ xfs_qm_dqtobp(
 	/*
 	 * A simple sanity check in case we got a corrupted dquot...
 	 */
-	if (xfs_qm_dqcheck(ddq, id,
-			   dqp->dq_flags & (XFS_DQ_USER|XFS_DQ_GROUP),
+	if (xfs_qm_dqcheck(ddq, id, dqp->dq_flags & XFS_DQ_ALLTYPES,
 			   flags & (XFS_QMOPT_DQREPAIR|XFS_QMOPT_DOWARN),
 			   "dqtobp")) {
 		if (!(flags & XFS_QMOPT_DQREPAIR)) {
@@ -953,8 +897,8 @@ int
 xfs_qm_dqget(
 	xfs_mount_t	*mp,
 	xfs_inode_t	*ip,	  /* locked inode (optional) */
-	xfs_dqid_t	id,	  /* gid or uid, depending on type */
-	uint		type,	  /* UDQUOT or GDQUOT */
+	xfs_dqid_t	id,	  /* uid/projid/gid depending on type */
+	uint		type,	  /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */
 	uint		flags,	  /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */
 	xfs_dquot_t	**O_dqpp) /* OUT : locked incore dquot */
 {
@@ -965,6 +909,7 @@ xfs_qm_dqget(
 
 	ASSERT(XFS_IS_QUOTA_RUNNING(mp));
 	if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) ||
+	    (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) ||
 	    (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) {
 		return (ESRCH);
 	}
@@ -983,7 +928,9 @@ xfs_qm_dqget(
  again:
 
 #ifdef DEBUG
-	ASSERT(type == XFS_DQ_USER || type == XFS_DQ_GROUP);
+	ASSERT(type == XFS_DQ_USER ||
+	       type == XFS_DQ_PROJ ||
+	       type == XFS_DQ_GROUP);
 	if (ip) {
 		ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
 		if (type == XFS_DQ_USER)
@@ -1306,8 +1253,8 @@ xfs_qm_dqflush(
 		return (error);
 	}
 
-	if (xfs_qm_dqcheck(&dqp->q_core, INT_GET(ddqp->d_id, ARCH_CONVERT), 0, XFS_QMOPT_DOWARN,
-			   "dqflush (incore copy)")) {
+	if (xfs_qm_dqcheck(&dqp->q_core, INT_GET(ddqp->d_id, ARCH_CONVERT),
+			   0, XFS_QMOPT_DOWARN, "dqflush (incore copy)")) {
 		xfs_force_shutdown(dqp->q_mount, XFS_CORRUPT_INCORE);
 		return XFS_ERROR(EIO);
 	}
@@ -1459,7 +1406,8 @@ xfs_dqlock2(
 {
 	if (d1 && d2) {
 		ASSERT(d1 != d2);
-		if (INT_GET(d1->q_core.d_id, ARCH_CONVERT) > INT_GET(d2->q_core.d_id, ARCH_CONVERT)) {
+		if (INT_GET(d1->q_core.d_id, ARCH_CONVERT) >
+		    INT_GET(d2->q_core.d_id, ARCH_CONVERT)) {
 			xfs_dqlock(d2);
 			xfs_dqlock(d1);
 		} else {
@@ -1582,8 +1530,7 @@ xfs_qm_dqprint(xfs_dquot_t *dqp)
 	cmn_err(CE_DEBUG, "-----------KERNEL DQUOT----------------");
 	cmn_err(CE_DEBUG, "---- dquotID =  %d",
 		(int)INT_GET(dqp->q_core.d_id, ARCH_CONVERT));
-	cmn_err(CE_DEBUG, "---- type    =  %s",
-		XFS_QM_ISUDQ(dqp) ? "USR" : "GRP");
+	cmn_err(CE_DEBUG, "---- type    =  %s", DQFLAGTO_TYPESTR(dqp));
 	cmn_err(CE_DEBUG, "---- fs      =  0x%p", dqp->q_mount);
 	cmn_err(CE_DEBUG, "---- blkno   =  0x%x", (int) dqp->q_blkno);
 	cmn_err(CE_DEBUG, "---- boffset =  0x%x", (int) dqp->q_bufoffset);
diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/quota/xfs_dquot.h
index 0c3fe31..3917510 100644
--- a/fs/xfs/quota/xfs_dquot.h
+++ b/fs/xfs/quota/xfs_dquot.h
@@ -114,25 +114,18 @@ typedef struct xfs_dquot {
 #define XFS_DQHOLD(dqp)		((dqp)->q_nrefs++)
 
 /*
- * Quota Accounting flags
+ * Quota Accounting/Enforcement flags
  */
-#define XFS_ALL_QUOTA_ACCT	(XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT)
-#define XFS_ALL_QUOTA_ENFD	(XFS_UQUOTA_ENFD | XFS_GQUOTA_ENFD)
-#define XFS_ALL_QUOTA_CHKD	(XFS_UQUOTA_CHKD | XFS_GQUOTA_CHKD)
-#define XFS_ALL_QUOTA_ACTV	(XFS_UQUOTA_ACTIVE | XFS_GQUOTA_ACTIVE)
-#define XFS_ALL_QUOTA_ACCT_ENFD (XFS_UQUOTA_ACCT|XFS_UQUOTA_ENFD|\
-				 XFS_GQUOTA_ACCT|XFS_GQUOTA_ENFD)
+#define XFS_ALL_QUOTA_ACCT	\
+		(XFS_UQUOTA_ACCT | XFS_GQUOTA_ACCT | XFS_PQUOTA_ACCT)
+#define XFS_ALL_QUOTA_ENFD	(XFS_UQUOTA_ENFD | XFS_OQUOTA_ENFD)
+#define XFS_ALL_QUOTA_CHKD	(XFS_UQUOTA_CHKD | XFS_OQUOTA_CHKD)
 
-#define XFS_IS_QUOTA_RUNNING(mp)  ((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)
-#define XFS_IS_UQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_UQUOTA_ACCT)
-#define XFS_IS_GQUOTA_RUNNING(mp) ((mp)->m_qflags & XFS_GQUOTA_ACCT)
-
-/*
- * Quota Limit Enforcement flags
- */
+#define XFS_IS_QUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_ALL_QUOTA_ACCT)
 #define XFS_IS_QUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_ALL_QUOTA_ENFD)
-#define XFS_IS_UQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_UQUOTA_ENFD)
-#define XFS_IS_GQUOTA_ENFORCED(mp)	((mp)->m_qflags & XFS_GQUOTA_ENFD)
+#define XFS_IS_UQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_UQUOTA_ACCT)
+#define XFS_IS_PQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_PQUOTA_ACCT)
+#define XFS_IS_GQUOTA_RUNNING(mp)	((mp)->m_qflags & XFS_GQUOTA_ACCT)
 
 #ifdef DEBUG
 static inline int
@@ -167,6 +160,8 @@ XFS_DQ_IS_LOCKED(xfs_dquot_t *dqp)
 #define XFS_DQ_IS_ON_FREELIST(dqp)  ((dqp)->dq_flnext != (dqp))
 #define XFS_DQ_IS_DIRTY(dqp)	((dqp)->dq_flags & XFS_DQ_DIRTY)
 #define XFS_QM_ISUDQ(dqp)	((dqp)->dq_flags & XFS_DQ_USER)
+#define XFS_QM_ISPDQ(dqp)	((dqp)->dq_flags & XFS_DQ_PROJ)
+#define XFS_QM_ISGDQ(dqp)	((dqp)->dq_flags & XFS_DQ_GROUP)
 #define XFS_DQ_TO_QINF(dqp)	((dqp)->q_mount->m_quotainfo)
 #define XFS_DQ_TO_QIP(dqp)	(XFS_QM_ISUDQ(dqp) ? \
 				 XFS_DQ_TO_QINF(dqp)->qi_uquotaip : \
@@ -174,7 +169,7 @@ XFS_DQ_IS_LOCKED(xfs_dquot_t *dqp)
 
 #define XFS_IS_THIS_QUOTA_OFF(d) (! (XFS_QM_ISUDQ(d) ? \
 				     (XFS_IS_UQUOTA_ON((d)->q_mount)) : \
-				     (XFS_IS_GQUOTA_ON((d)->q_mount))))
+				     (XFS_IS_OQUOTA_ON((d)->q_mount))))
 
 #ifdef XFS_DQUOT_TRACE
 /*
@@ -211,7 +206,6 @@ extern void		xfs_qm_adjust_dqtimers(xfs_mount_t *,
 					xfs_disk_dquot_t *);
 extern void		xfs_qm_adjust_dqlimits(xfs_mount_t *,
 					xfs_disk_dquot_t *);
-extern int		xfs_qm_dqwarn(xfs_disk_dquot_t *, uint);
 extern int		xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *,
 					xfs_dqid_t, uint, uint, xfs_dquot_t **);
 extern void		xfs_qm_dqput(xfs_dquot_t *);
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index a5425ee..f5271b7 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -428,7 +428,7 @@ xfs_qm_dquot_logitem_committing(
 /*
  * This is the ops vector for dquots
  */
-struct xfs_item_ops xfs_dquot_item_ops = {
+STATIC struct xfs_item_ops xfs_dquot_item_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_dquot_logitem_format,
@@ -646,7 +646,7 @@ xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn)
 	return;
 }
 
-struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
+STATIC struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_qoff_logitem_format,
@@ -669,7 +669,7 @@ struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 /*
  * This is the ops vector shared by all quotaoff-start log items.
  */
-struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
+STATIC struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
 	.iop_size	= (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size,
 	.iop_format	= (void(*)(xfs_log_item_t*, xfs_log_iovec_t*))
 					xfs_qm_qoff_logitem_format,
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 89f2cd6..f665ca8f 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -81,12 +81,18 @@ struct xfs_qm	*xfs_Gqm;
 
 kmem_zone_t	*qm_dqzone;
 kmem_zone_t	*qm_dqtrxzone;
-kmem_shaker_t	xfs_qm_shaker;
+STATIC kmem_shaker_t	xfs_qm_shaker;
 
 STATIC void	xfs_qm_list_init(xfs_dqlist_t *, char *, int);
 STATIC void	xfs_qm_list_destroy(xfs_dqlist_t *);
 
+STATIC void	xfs_qm_freelist_init(xfs_frlist_t *);
+STATIC void	xfs_qm_freelist_destroy(xfs_frlist_t *);
+STATIC int	xfs_qm_mplist_nowait(xfs_mount_t *);
+STATIC int	xfs_qm_dqhashlock_nowait(xfs_dquot_t *);
+
 STATIC int	xfs_qm_init_quotainos(xfs_mount_t *);
+STATIC int	xfs_qm_init_quotainfo(xfs_mount_t *);
 STATIC int	xfs_qm_shake(int, unsigned int);
 
 #ifdef DEBUG
@@ -184,7 +190,7 @@ xfs_Gqm_init(void)
 /*
  * Destroy the global quota manager when its reference count goes to zero.
  */
-void
+STATIC void
 xfs_qm_destroy(
 	struct xfs_qm	*xqm)
 {
@@ -304,9 +310,9 @@ xfs_qm_mount_quotainit(
 	uint		flags)
 {
 	/*
-	 * User or group quotas has to be on.
+	 * User, projects or group quotas has to be on.
 	 */
-	ASSERT(flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA));
+	ASSERT(flags & (XFSMNT_UQUOTA | XFSMNT_PQUOTA | XFSMNT_GQUOTA));
 
 	/*
 	 * Initialize the flags in the mount structure. From this point
@@ -324,7 +330,11 @@ xfs_qm_mount_quotainit(
 	if (flags & XFSMNT_GQUOTA) {
 		mp->m_qflags |= (XFS_GQUOTA_ACCT | XFS_GQUOTA_ACTIVE);
 		if (flags & XFSMNT_GQUOTAENF)
-			mp->m_qflags |= XFS_GQUOTA_ENFD;
+			mp->m_qflags |= XFS_OQUOTA_ENFD;
+	} else if (flags & XFSMNT_PQUOTA) {
+		mp->m_qflags |= (XFS_PQUOTA_ACCT | XFS_PQUOTA_ACTIVE);
+		if (flags & XFSMNT_PQUOTAENF)
+			mp->m_qflags |= XFS_OQUOTA_ENFD;
 	}
 }
 
@@ -357,11 +367,11 @@ xfs_qm_mount_quotas(
 
 	/*
 	 * If a file system had quotas running earlier, but decided to
-	 * mount without -o quota/uquota/gquota options, revoke the
+	 * mount without -o uquota/pquota/gquota options, revoke the
 	 * quotachecked license, and bail out.
 	 */
 	if (! XFS_IS_QUOTA_ON(mp) &&
-	    (mp->m_sb.sb_qflags & (XFS_UQUOTA_ACCT|XFS_GQUOTA_ACCT))) {
+	    (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT)) {
 		mp->m_qflags = 0;
 		goto write_changes;
 	}
@@ -509,7 +519,7 @@ out:
  * Flush all dquots of the given file system to disk. The dquots are
  * _not_ purged from memory here, just their data written to disk.
  */
-int
+STATIC int
 xfs_qm_dqflush_all(
 	xfs_mount_t	*mp,
 	int		flags)
@@ -613,7 +623,7 @@ xfs_qm_detach_gdquots(
 STATIC int
 xfs_qm_dqpurge_int(
 	xfs_mount_t	*mp,
-	uint		flags) /* QUOTAOFF/UMOUNTING/UQUOTA/GQUOTA */
+	uint		flags) /* QUOTAOFF/UMOUNTING/UQUOTA/PQUOTA/GQUOTA */
 {
 	xfs_dquot_t	*dqp;
 	uint		dqtype;
@@ -625,6 +635,7 @@ xfs_qm_dqpurge_int(
 		return (0);
 
 	dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0;
+	dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0;
 	dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0;
 
 	xfs_qm_mplist_lock(mp);
@@ -734,11 +745,11 @@ xfs_qm_dqattach_one(
 
 	/*
 	 * udqhint is the i_udquot field in inode, and is non-NULL only
-	 * when the type arg is XFS_DQ_GROUP. Its purpose is to save a
+	 * when the type arg is group/project. Its purpose is to save a
 	 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
 	 * the user dquot.
 	 */
-	ASSERT(!udqhint || type == XFS_DQ_GROUP);
+	ASSERT(!udqhint || type == XFS_DQ_GROUP || type == XFS_DQ_PROJ);
 	if (udqhint && !dolock)
 		xfs_dqlock(udqhint);
 
@@ -897,8 +908,8 @@ xfs_qm_dqattach_grouphint(
 
 
 /*
- * Given a locked inode, attach dquot(s) to it, taking UQUOTAON / GQUOTAON
- * in to account.
+ * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
+ * into account.
  * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
  * If XFS_QMOPT_DQLOCK, the dquot(s) will be returned locked. This option pretty
  * much made this code a complete mess, but it has been pretty useful.
@@ -937,8 +948,13 @@ xfs_qm_dqattach(
 		nquotas++;
 	}
 	ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
-	if (XFS_IS_GQUOTA_ON(mp)) {
-		error = xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
+	if (XFS_IS_OQUOTA_ON(mp)) {
+		error = XFS_IS_GQUOTA_ON(mp) ?
+			xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
+						flags & XFS_QMOPT_DQALLOC,
+						flags & XFS_QMOPT_DQLOCK,
+						ip->i_udquot, &ip->i_gdquot) :
+			xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ,
 						flags & XFS_QMOPT_DQALLOC,
 						flags & XFS_QMOPT_DQLOCK,
 						ip->i_udquot, &ip->i_gdquot);
@@ -989,7 +1005,7 @@ xfs_qm_dqattach(
 		}
 		if (XFS_IS_UQUOTA_ON(mp))
 			ASSERT(ip->i_udquot);
-		if (XFS_IS_GQUOTA_ON(mp))
+		if (XFS_IS_OQUOTA_ON(mp))
 			ASSERT(ip->i_gdquot);
 	}
 #endif
@@ -1018,13 +1034,13 @@ xfs_qm_dqdetach(
 
 	ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino);
 	ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino);
-	if (ip->i_udquot)
-		xfs_dqtrace_entry_ino(ip->i_udquot, "DQDETTACH", ip);
 	if (ip->i_udquot) {
+		xfs_dqtrace_entry_ino(ip->i_udquot, "DQDETTACH", ip);
 		xfs_qm_dqrele(ip->i_udquot);
 		ip->i_udquot = NULL;
 	}
 	if (ip->i_gdquot) {
+		xfs_dqtrace_entry_ino(ip->i_gdquot, "DQDETTACH", ip);
 		xfs_qm_dqrele(ip->i_gdquot);
 		ip->i_gdquot = NULL;
 	}
@@ -1149,7 +1165,7 @@ xfs_qm_sync(
  * This initializes all the quota information that's kept in the
  * mount structure
  */
-int
+STATIC int
 xfs_qm_init_quotainfo(
 	xfs_mount_t	*mp)
 {
@@ -1202,8 +1218,9 @@ xfs_qm_init_quotainfo(
 	 * and group quotas, at least not at this point.
 	 */
 	error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0,
-			     (XFS_IS_UQUOTA_RUNNING(mp)) ?
-			     XFS_DQ_USER : XFS_DQ_GROUP,
+			     XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : 
+			     (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP :
+				XFS_DQ_PROJ),
 			     XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN,
 			     &dqp);
 	if (! error) {
@@ -1234,6 +1251,10 @@ xfs_qm_init_quotainfo(
 				INT_GET(ddqp->d_iwarns, ARCH_CONVERT) ?
 				INT_GET(ddqp->d_iwarns, ARCH_CONVERT) :
 				XFS_QM_IWARNLIMIT;
+		qinf->qi_rtbwarnlimit =
+				INT_GET(ddqp->d_rtbwarns, ARCH_CONVERT) ?
+				INT_GET(ddqp->d_rtbwarns, ARCH_CONVERT) :
+				XFS_QM_RTBWARNLIMIT;
 		qinf->qi_bhardlimit =
 				INT_GET(ddqp->d_blk_hardlimit, ARCH_CONVERT);
 		qinf->qi_bsoftlimit =
@@ -1259,6 +1280,7 @@ xfs_qm_init_quotainfo(
 		qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT;
 		qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT;
 		qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT;
+		qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT;
 	}
 
 	return (0);
@@ -1366,13 +1388,20 @@ xfs_qm_dqget_noattach(
 		ASSERT(udqp);
 	}
 
-	if (XFS_IS_GQUOTA_ON(mp)) {
+	if (XFS_IS_OQUOTA_ON(mp)) {
 		ASSERT(ip->i_gdquot == NULL);
 		if (udqp)
 			xfs_dqunlock(udqp);
-		if ((error = xfs_qm_dqget(mp, ip, ip->i_d.di_gid, XFS_DQ_GROUP,
-					 XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN,
-					 &gdqp))) {
+		error = XFS_IS_GQUOTA_ON(mp) ?
+				xfs_qm_dqget(mp, ip,
+					     ip->i_d.di_gid, XFS_DQ_GROUP,
+					     XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN,
+					     &gdqp) :
+				xfs_qm_dqget(mp, ip,
+					     ip->i_d.di_projid, XFS_DQ_PROJ,
+					     XFS_QMOPT_DQALLOC|XFS_QMOPT_DOWARN,
+					     &gdqp);
+		if (error) {
 			if (udqp)
 				xfs_qm_dqrele(udqp);
 			ASSERT(error != ESRCH);
@@ -1521,8 +1550,10 @@ xfs_qm_reset_dqcounts(
 		INT_SET(ddq->d_rtbcount, ARCH_CONVERT, 0ULL);
 		INT_SET(ddq->d_btimer, ARCH_CONVERT, (time_t)0);
 		INT_SET(ddq->d_itimer, ARCH_CONVERT, (time_t)0);
+		INT_SET(ddq->d_rtbtimer, ARCH_CONVERT, (time_t)0);
 		INT_SET(ddq->d_bwarns, ARCH_CONVERT, 0UL);
 		INT_SET(ddq->d_iwarns, ARCH_CONVERT, 0UL);
+		INT_SET(ddq->d_rtbwarns, ARCH_CONVERT, 0UL);
 		ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1);
 	}
 
@@ -1541,11 +1572,14 @@ xfs_qm_dqiter_bufs(
 	int		error;
 	int		notcommitted;
 	int		incr;
+	int		type;
 
 	ASSERT(blkcnt > 0);
 	notcommitted = 0;
 	incr = (blkcnt > XFS_QM_MAX_DQCLUSTER_LOGSZ) ?
 		XFS_QM_MAX_DQCLUSTER_LOGSZ : blkcnt;
+	type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER :
+		(flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP);
 	error = 0;
 
 	/*
@@ -1564,9 +1598,7 @@ xfs_qm_dqiter_bufs(
 		if (error)
 			break;
 
-		(void) xfs_qm_reset_dqcounts(mp, bp, firstid,
-					     flags & XFS_QMOPT_UQUOTA ?
-					     XFS_DQ_USER : XFS_DQ_GROUP);
+		(void) xfs_qm_reset_dqcounts(mp, bp, firstid, type);
 		xfs_bdwrite(mp, bp);
 		/*
 		 * goto the next block.
@@ -1578,7 +1610,7 @@ xfs_qm_dqiter_bufs(
 }
 
 /*
- * Iterate over all allocated USR/GRP dquots in the system, calling a
+ * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a
  * caller supplied function for every chunk of dquots that we find.
  */
 STATIC int
@@ -1849,7 +1881,7 @@ xfs_qm_dqusage_adjust(
 		xfs_qm_quotacheck_dqadjust(udqp, nblks, rtblks);
 		xfs_qm_dqput(udqp);
 	}
-	if (XFS_IS_GQUOTA_ON(mp)) {
+	if (XFS_IS_OQUOTA_ON(mp)) {
 		ASSERT(gdqp);
 		xfs_qm_quotacheck_dqadjust(gdqp, nblks, rtblks);
 		xfs_qm_dqput(gdqp);
@@ -1898,7 +1930,7 @@ xfs_qm_quotacheck(
 	cmn_err(CE_NOTE, "XFS quotacheck %s: Please wait.", mp->m_fsname);
 
 	/*
-	 * First we go thru all the dquots on disk, USR and GRP, and reset
+	 * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset
 	 * their counters to zero. We need a clean slate.
 	 * We don't log our changes till later.
 	 */
@@ -1909,9 +1941,10 @@ xfs_qm_quotacheck(
 	}
 
 	if ((gip = XFS_QI_GQIP(mp))) {
-		if ((error = xfs_qm_dqiterate(mp, gip, XFS_QMOPT_GQUOTA)))
+		if ((error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ?
+					XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA)))
 			goto error_return;
-		flags |= XFS_GQUOTA_CHKD;
+		flags |= XFS_OQUOTA_CHKD;
 	}
 
 	do {
@@ -1938,7 +1971,7 @@ xfs_qm_quotacheck(
 	if (error) {
 		xfs_qm_dqpurge_all(mp,
 				   XFS_QMOPT_UQUOTA|XFS_QMOPT_GQUOTA|
-				   XFS_QMOPT_QUOTAOFF);
+				   XFS_QMOPT_PQUOTA|XFS_QMOPT_QUOTAOFF);
 		goto error_return;
 	}
 	/*
@@ -1961,7 +1994,7 @@ xfs_qm_quotacheck(
 	 * quotachecked status, since we won't be doing accounting for
 	 * that type anymore.
 	 */
-	mp->m_qflags &= ~(XFS_GQUOTA_CHKD | XFS_UQUOTA_CHKD);
+	mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD);
 	mp->m_qflags |= flags;
 
 	XQM_LIST_PRINT(&(XFS_QI_MPL_LIST(mp)), MPL_NEXT, "++++ Mp list +++");
@@ -2013,7 +2046,7 @@ xfs_qm_init_quotainos(
 					     0, 0, &uip, 0)))
 				return XFS_ERROR(error);
 		}
-		if (XFS_IS_GQUOTA_ON(mp) &&
+		if (XFS_IS_OQUOTA_ON(mp) &&
 		    mp->m_sb.sb_gquotino != NULLFSINO) {
 			ASSERT(mp->m_sb.sb_gquotino > 0);
 			if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
@@ -2043,10 +2076,12 @@ xfs_qm_init_quotainos(
 
 		flags &= ~XFS_QMOPT_SBVERSION;
 	}
-	if (XFS_IS_GQUOTA_ON(mp) && gip == NULL) {
-		if ((error = xfs_qm_qino_alloc(mp, &gip,
-					      sbflags | XFS_SB_GQUOTINO,
-					      flags | XFS_QMOPT_GQUOTA))) {
+	if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) {
+		flags |= (XFS_IS_GQUOTA_ON(mp) ?
+				XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA);
+		error = xfs_qm_qino_alloc(mp, &gip,
+					  sbflags | XFS_SB_GQUOTINO, flags);
+		if (error) {
 			if (uip)
 				VN_RELE(XFS_ITOV(uip));
 
@@ -2452,6 +2487,7 @@ xfs_qm_vop_dqalloc(
 	xfs_inode_t	*ip,
 	uid_t		uid,
 	gid_t		gid,
+	prid_t		prid,
 	uint		flags,
 	xfs_dquot_t	**O_udqpp,
 	xfs_dquot_t	**O_gdqpp)
@@ -2483,8 +2519,7 @@ xfs_qm_vop_dqalloc(
 	}
 
 	uq = gq = NULL;
-	if ((flags & XFS_QMOPT_UQUOTA) &&
-	    XFS_IS_UQUOTA_ON(mp)) {
+	if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) {
 		if (ip->i_d.di_uid != uid) {
 			/*
 			 * What we need is the dquot that has this uid, and
@@ -2522,8 +2557,7 @@ xfs_qm_vop_dqalloc(
 			xfs_dqunlock(uq);
 		}
 	}
-	if ((flags & XFS_QMOPT_GQUOTA) &&
-	    XFS_IS_GQUOTA_ON(mp)) {
+	if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) {
 		if (ip->i_d.di_gid != gid) {
 			xfs_iunlock(ip, lockflags);
 			if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid,
@@ -2546,6 +2580,29 @@ xfs_qm_vop_dqalloc(
 			XFS_DQHOLD(gq);
 			xfs_dqunlock(gq);
 		}
+	} else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) {
+		if (ip->i_d.di_projid != prid) {
+			xfs_iunlock(ip, lockflags);
+			if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid,
+						 XFS_DQ_PROJ,
+						 XFS_QMOPT_DQALLOC |
+						 XFS_QMOPT_DOWARN,
+						 &gq))) {
+				if (uq)
+					xfs_qm_dqrele(uq);
+				ASSERT(error != ENOENT);
+				return (error);
+			}
+			xfs_dqunlock(gq);
+			lockflags = XFS_ILOCK_SHARED;
+			xfs_ilock(ip, lockflags);
+		} else {
+			ASSERT(ip->i_gdquot);
+			gq = ip->i_gdquot;
+			xfs_dqlock(gq);
+			XFS_DQHOLD(gq);
+			xfs_dqunlock(gq);
+		}
 	}
 	if (uq)
 		xfs_dqtrace_entry_ino(uq, "DQALLOC", ip);
@@ -2574,6 +2631,9 @@ xfs_qm_vop_chown(
 	xfs_dquot_t	*newdq)
 {
 	xfs_dquot_t	*prevdq;
+	uint		bfield = XFS_IS_REALTIME_INODE(ip) ?
+				 XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT;
+
 	ASSERT(XFS_ISLOCKED_INODE_EXCL(ip));
 	ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount));
 
@@ -2582,20 +2642,12 @@ xfs_qm_vop_chown(
 	ASSERT(prevdq);
 	ASSERT(prevdq != newdq);
 
-	xfs_trans_mod_dquot(tp, prevdq,
-			    XFS_TRANS_DQ_BCOUNT,
-			    -(ip->i_d.di_nblocks));
-	xfs_trans_mod_dquot(tp, prevdq,
-			    XFS_TRANS_DQ_ICOUNT,
-			    -1);
+	xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks));
+	xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1);
 
 	/* the sparkling new dquot */
-	xfs_trans_mod_dquot(tp, newdq,
-			    XFS_TRANS_DQ_BCOUNT,
-			    ip->i_d.di_nblocks);
-	xfs_trans_mod_dquot(tp, newdq,
-			    XFS_TRANS_DQ_ICOUNT,
-			    1);
+	xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks);
+	xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1);
 
 	/*
 	 * Take an extra reference, because the inode
@@ -2611,7 +2663,7 @@ xfs_qm_vop_chown(
 }
 
 /*
- * Quota reservations for setattr(AT_UID|AT_GID).
+ * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID).
  */
 int
 xfs_qm_vop_chown_reserve(
@@ -2623,7 +2675,7 @@ xfs_qm_vop_chown_reserve(
 {
 	int		error;
 	xfs_mount_t	*mp;
-	uint		delblks;
+	uint		delblks, blkflags;
 	xfs_dquot_t	*unresudq, *unresgdq, *delblksudq, *delblksgdq;
 
 	ASSERT(XFS_ISLOCKED_INODE(ip));
@@ -2632,6 +2684,8 @@ xfs_qm_vop_chown_reserve(
 
 	delblks = ip->i_delayed_blks;
 	delblksudq = delblksgdq = unresudq = unresgdq = NULL;
+	blkflags = XFS_IS_REALTIME_INODE(ip) ?
+			XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS;
 
 	if (XFS_IS_UQUOTA_ON(mp) && udqp &&
 	    ip->i_d.di_uid != (uid_t)INT_GET(udqp->q_core.d_id, ARCH_CONVERT)) {
@@ -2646,18 +2700,22 @@ xfs_qm_vop_chown_reserve(
 			unresudq = ip->i_udquot;
 		}
 	}
-	if (XFS_IS_GQUOTA_ON(ip->i_mount) && gdqp &&
-	    ip->i_d.di_gid != INT_GET(gdqp->q_core.d_id, ARCH_CONVERT)) {
-		delblksgdq = gdqp;
-		if (delblks) {
-			ASSERT(ip->i_gdquot);
-			unresgdq = ip->i_gdquot;
+	if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) {
+		if ((XFS_IS_GQUOTA_ON(ip->i_mount) && ip->i_d.di_gid !=
+				INT_GET(gdqp->q_core.d_id, ARCH_CONVERT)) ||
+		    (XFS_IS_PQUOTA_ON(ip->i_mount) && ip->i_d.di_projid !=
+				INT_GET(gdqp->q_core.d_id, ARCH_CONVERT))) {
+			delblksgdq = gdqp;
+			if (delblks) {
+				ASSERT(ip->i_gdquot);
+				unresgdq = ip->i_gdquot;
+			}
 		}
 	}
 
 	if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount,
 				delblksudq, delblksgdq, ip->i_d.di_nblocks, 1,
-				flags | XFS_QMOPT_RES_REGBLKS)))
+				flags | blkflags)))
 		return (error);
 
 	/*
@@ -2674,11 +2732,11 @@ xfs_qm_vop_chown_reserve(
 		ASSERT(unresudq || unresgdq);
 		if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
 				delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0,
-				flags | XFS_QMOPT_RES_REGBLKS)))
+				flags | blkflags)))
 			return (error);
 		xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount,
 				unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0,
-				XFS_QMOPT_RES_REGBLKS);
+				blkflags);
 	}
 
 	return (0);
@@ -2751,7 +2809,7 @@ xfs_qm_vop_dqattach_and_dqmod_newinode(
 }
 
 /* ------------- list stuff -----------------*/
-void
+STATIC void
 xfs_qm_freelist_init(xfs_frlist_t *ql)
 {
 	ql->qh_next = ql->qh_prev = (xfs_dquot_t *) ql;
@@ -2760,7 +2818,7 @@ xfs_qm_freelist_init(xfs_frlist_t *ql)
 	ql->qh_nelems = 0;
 }
 
-void
+STATIC void
 xfs_qm_freelist_destroy(xfs_frlist_t *ql)
 {
 	xfs_dquot_t	*dqp, *nextdqp;
@@ -2786,7 +2844,7 @@ xfs_qm_freelist_destroy(xfs_frlist_t *ql)
 	ASSERT(ql->qh_nelems == 0);
 }
 
-void
+STATIC void
 xfs_qm_freelist_insert(xfs_frlist_t *ql, xfs_dquot_t *dq)
 {
 	dq->dq_flnext = ql->qh_next;
@@ -2816,7 +2874,7 @@ xfs_qm_freelist_append(xfs_frlist_t *ql, xfs_dquot_t *dq)
 	xfs_qm_freelist_insert((xfs_frlist_t *)ql->qh_prev, dq);
 }
 
-int
+STATIC int
 xfs_qm_dqhashlock_nowait(
 	xfs_dquot_t *dqp)
 {
@@ -2836,7 +2894,7 @@ xfs_qm_freelist_lock_nowait(
 	return (locked);
 }
 
-int
+STATIC int
 xfs_qm_mplist_nowait(
 	xfs_mount_t	*mp)
 {
diff --git a/fs/xfs/quota/xfs_qm.h b/fs/xfs/quota/xfs_qm.h
index dcf1a7a..b03eecf 100644
--- a/fs/xfs/quota/xfs_qm.h
+++ b/fs/xfs/quota/xfs_qm.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -133,8 +133,9 @@ typedef struct xfs_quotainfo {
 	time_t		 qi_btimelimit;	 /* limit for blks timer */
 	time_t		 qi_itimelimit;	 /* limit for inodes timer */
 	time_t		 qi_rtbtimelimit;/* limit for rt blks timer */
-	xfs_qwarncnt_t	 qi_bwarnlimit;	 /* limit for num warnings */
-	xfs_qwarncnt_t	 qi_iwarnlimit;	 /* limit for num warnings */
+	xfs_qwarncnt_t	 qi_bwarnlimit;	 /* limit for blks warnings */
+	xfs_qwarncnt_t	 qi_iwarnlimit;	 /* limit for inodes warnings */
+	xfs_qwarncnt_t	 qi_rtbwarnlimit;/* limit for rt blks warnings */
 	mutex_t		 qi_quotaofflock;/* to serialize quotaoff */
 	xfs_filblks_t	 qi_dqchunklen;	 /* # BBs in a chunk of dqs */
 	uint		 qi_dqperchunk;	 /* # ondisk dqs in above chunk */
@@ -176,6 +177,7 @@ typedef struct xfs_dquot_acct {
 
 #define XFS_QM_BWARNLIMIT	5
 #define XFS_QM_IWARNLIMIT	5
+#define XFS_QM_RTBWARNLIMIT	5
 
 #define XFS_QM_LOCK(xqm)	(mutex_lock(&xqm##_lock, PINOD))
 #define XFS_QM_UNLOCK(xqm)	(mutex_unlock(&xqm##_lock))
@@ -184,7 +186,6 @@ typedef struct xfs_dquot_acct {
 
 extern void		xfs_mount_reset_sbqflags(xfs_mount_t *);
 
-extern int		xfs_qm_init_quotainfo(xfs_mount_t *);
 extern void		xfs_qm_destroy_quotainfo(xfs_mount_t *);
 extern int		xfs_qm_mount_quotas(xfs_mount_t *, int);
 extern void		xfs_qm_mount_quotainit(xfs_mount_t *, uint);
@@ -203,7 +204,7 @@ extern void		xfs_qm_dqrele_all_inodes(xfs_mount_t *, uint);
 
 /* vop stuff */
 extern int		xfs_qm_vop_dqalloc(xfs_mount_t *, xfs_inode_t *,
-					uid_t, gid_t, uint,
+					uid_t, gid_t, prid_t, uint,
 					xfs_dquot_t **, xfs_dquot_t **);
 extern void		xfs_qm_vop_dqattach_and_dqmod_newinode(
 					xfs_trans_t *, xfs_inode_t *,
@@ -215,14 +216,9 @@ extern int		xfs_qm_vop_chown_reserve(xfs_trans_t *, xfs_inode_t *,
 					xfs_dquot_t *, xfs_dquot_t *, uint);
 
 /* list stuff */
-extern void		xfs_qm_freelist_init(xfs_frlist_t *);
-extern void		xfs_qm_freelist_destroy(xfs_frlist_t *);
-extern void		xfs_qm_freelist_insert(xfs_frlist_t *, xfs_dquot_t *);
 extern void		xfs_qm_freelist_append(xfs_frlist_t *, xfs_dquot_t *);
 extern void		xfs_qm_freelist_unlink(xfs_dquot_t *);
 extern int		xfs_qm_freelist_lock_nowait(xfs_qm_t *);
-extern int		xfs_qm_mplist_nowait(xfs_mount_t *);
-extern int		xfs_qm_dqhashlock_nowait(xfs_dquot_t *);
 
 /* system call interface */
 extern int		xfs_qm_quotactl(bhv_desc_t *, int, int, xfs_caddr_t);
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index be67d9c..dc3c37a 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -71,10 +71,13 @@
 #define MNTOPT_NOQUOTA	"noquota"	/* no quotas */
 #define MNTOPT_USRQUOTA	"usrquota"	/* user quota enabled */
 #define MNTOPT_GRPQUOTA	"grpquota"	/* group quota enabled */
+#define MNTOPT_PRJQUOTA	"prjquota"	/* project quota enabled */
 #define MNTOPT_UQUOTA	"uquota"	/* user quota (IRIX variant) */
 #define MNTOPT_GQUOTA	"gquota"	/* group quota (IRIX variant) */
+#define MNTOPT_PQUOTA	"pquota"	/* project quota (IRIX variant) */
 #define MNTOPT_UQUOTANOENF "uqnoenforce"/* user quota limit enforcement */
 #define MNTOPT_GQUOTANOENF "gqnoenforce"/* group quota limit enforcement */
+#define MNTOPT_PQUOTANOENF "pqnoenforce"/* project quota limit enforcement */
 #define MNTOPT_QUOTANOENF  "qnoenforce"	/* same as uqnoenforce */
 
 STATIC int
@@ -109,6 +112,14 @@ xfs_qm_parseargs(
 			args->flags |= XFSMNT_UQUOTA;
 			args->flags &= ~XFSMNT_UQUOTAENF;
 			referenced = 1;
+		} else if (!strcmp(this_char, MNTOPT_PQUOTA) ||
+			   !strcmp(this_char, MNTOPT_PRJQUOTA)) {
+			args->flags |= XFSMNT_PQUOTA | XFSMNT_PQUOTAENF;
+			referenced = 1;
+		} else if (!strcmp(this_char, MNTOPT_PQUOTANOENF)) {
+			args->flags |= XFSMNT_PQUOTA;
+			args->flags &= ~XFSMNT_PQUOTAENF;
+			referenced = 1;
 		} else if (!strcmp(this_char, MNTOPT_GQUOTA) ||
 			   !strcmp(this_char, MNTOPT_GRPQUOTA)) {
 			args->flags |= XFSMNT_GQUOTA | XFSMNT_GQUOTAENF;
@@ -127,6 +138,12 @@ xfs_qm_parseargs(
 			*this_char++ = ',';
 	}
 
+	if ((args->flags & XFSMNT_GQUOTA) && (args->flags & XFSMNT_PQUOTA)) {
+		cmn_err(CE_WARN,
+			"XFS: cannot mount with both project and group quota");
+		return XFS_ERROR(EINVAL);
+	}
+
 	PVFS_PARSEARGS(BHV_NEXT(bhv), options, args, update, error);
 	if (!error && !referenced)
 		bhv_remove_vfsops(bhvtovfs(bhv), VFS_POSITION_QM);
@@ -148,13 +165,19 @@ xfs_qm_showargs(
 			seq_puts(m, "," MNTOPT_UQUOTANOENF);
 	}
 
+	if (mp->m_qflags & XFS_PQUOTA_ACCT) {
+		(mp->m_qflags & XFS_OQUOTA_ENFD) ?
+			seq_puts(m, "," MNTOPT_PRJQUOTA) :
+			seq_puts(m, "," MNTOPT_PQUOTANOENF);
+	}
+
 	if (mp->m_qflags & XFS_GQUOTA_ACCT) {
-		(mp->m_qflags & XFS_GQUOTA_ENFD) ?
+		(mp->m_qflags & XFS_OQUOTA_ENFD) ?
 			seq_puts(m, "," MNTOPT_GRPQUOTA) :
 			seq_puts(m, "," MNTOPT_GQUOTANOENF);
 	}
 
-	if (!(mp->m_qflags & (XFS_UQUOTA_ACCT|XFS_GQUOTA_ACCT)))
+	if (!(mp->m_qflags & XFS_ALL_QUOTA_ACCT))
 		seq_puts(m, "," MNTOPT_NOQUOTA);
 
 	PVFS_SHOWARGS(BHV_NEXT(bhv), m, error);
@@ -171,7 +194,7 @@ xfs_qm_mount(
 	struct xfs_mount	*mp = XFS_VFSTOM(vfsp);
 	int			error;
 
-	if (args->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA))
+	if (args->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA | XFSMNT_PQUOTA))
 		xfs_qm_mount_quotainit(mp, args->flags);
 	PVFS_MOUNT(BHV_NEXT(bhv), args, cr, error);
 	return error;
@@ -255,16 +278,17 @@ xfs_qm_newmount(
 	uint		*quotaflags)
 {
 	uint		quotaondisk;
-	uint		uquotaondisk = 0, gquotaondisk = 0;
+	uint		uquotaondisk = 0, gquotaondisk = 0, pquotaondisk = 0;
 
 	*quotaflags = 0;
 	*needquotamount = B_FALSE;
 
 	quotaondisk = XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
-		mp->m_sb.sb_qflags & (XFS_UQUOTA_ACCT|XFS_GQUOTA_ACCT);
+				(mp->m_sb.sb_qflags & XFS_ALL_QUOTA_ACCT);
 
 	if (quotaondisk) {
 		uquotaondisk = mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT;
+		pquotaondisk = mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT;
 		gquotaondisk = mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT;
 	}
 
@@ -277,13 +301,16 @@ xfs_qm_newmount(
 
 	if (((uquotaondisk && !XFS_IS_UQUOTA_ON(mp)) ||
 	    (!uquotaondisk &&  XFS_IS_UQUOTA_ON(mp)) ||
+	     (pquotaondisk && !XFS_IS_PQUOTA_ON(mp)) ||
+	    (!pquotaondisk &&  XFS_IS_PQUOTA_ON(mp)) ||
 	     (gquotaondisk && !XFS_IS_GQUOTA_ON(mp)) ||
-	    (!gquotaondisk &&  XFS_IS_GQUOTA_ON(mp)))  &&
+	    (!gquotaondisk &&  XFS_IS_OQUOTA_ON(mp)))  &&
 	    xfs_dev_is_read_only(mp, "changing quota state")) {
 		cmn_err(CE_WARN,
-			"XFS: please mount with%s%s%s.",
+			"XFS: please mount with%s%s%s%s.",
 			(!quotaondisk ? "out quota" : ""),
 			(uquotaondisk ? " usrquota" : ""),
+			(pquotaondisk ? " prjquota" : ""),
 			(gquotaondisk ? " grpquota" : ""));
 		return XFS_ERROR(EPERM);
 	}
@@ -359,7 +386,7 @@ xfs_qm_dqrele_null(
 }
 
 
-struct xfs_qmops xfs_qmcore_xfs = {
+STATIC struct xfs_qmops xfs_qmcore_xfs = {
 	.xfs_qminit		= xfs_qm_newmount,
 	.xfs_qmdone		= xfs_qm_unmount_quotadestroy,
 	.xfs_qmmount		= xfs_qm_endmount,
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 229f5b5..68e9896 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -118,40 +118,41 @@ xfs_qm_quotactl(
 	 * The following commands are valid even when quotaoff.
 	 */
 	switch (cmd) {
+	case Q_XQUOTARM:
 		/*
-		 * truncate quota files. quota must be off.
+		 * Truncate quota files. quota must be off.
 		 */
-	      case Q_XQUOTARM:
 		if (XFS_IS_QUOTA_ON(mp) || addr == NULL)
 			return XFS_ERROR(EINVAL);
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		return (xfs_qm_scall_trunc_qfiles(mp,
 			       xfs_qm_import_qtype_flags(*(uint *)addr)));
+
+	case Q_XGETQSTAT:
 		/*
 		 * Get quota status information.
 		 */
-	      case Q_XGETQSTAT:
 		return (xfs_qm_scall_getqstat(mp, (fs_quota_stat_t *)addr));
 
+	case Q_XQUOTAON:
 		/*
-		 * QUOTAON for root f/s and quota enforcement on others..
-		 * Quota accounting for non-root f/s's must be turned on
-		 * at mount time.
+		 * QUOTAON - enabling quota enforcement.
+		 * Quota accounting must be turned on at mount time.
 		 */
-	      case Q_XQUOTAON:
 		if (addr == NULL)
 			return XFS_ERROR(EINVAL);
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		return (xfs_qm_scall_quotaon(mp,
 					  xfs_qm_import_flags(*(uint *)addr)));
-	      case Q_XQUOTAOFF:
+
+	case Q_XQUOTAOFF:
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		break;
 
-	      default:
+	default:
 		break;
 	}
 
@@ -159,7 +160,7 @@ xfs_qm_quotactl(
 		return XFS_ERROR(ESRCH);
 
 	switch (cmd) {
-	      case Q_XQUOTAOFF:
+	case Q_XQUOTAOFF:
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		error = xfs_qm_scall_quotaoff(mp,
@@ -167,42 +168,39 @@ xfs_qm_quotactl(
 					    B_FALSE);
 		break;
 
-		/*
-		 * Defaults to XFS_GETUQUOTA.
-		 */
-	      case Q_XGETQUOTA:
+	case Q_XGETQUOTA:
 		error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_USER,
 					(fs_disk_quota_t *)addr);
 		break;
-		/*
-		 * Set limits, both hard and soft. Defaults to Q_SETUQLIM.
-		 */
-	      case Q_XSETQLIM:
+	case Q_XGETGQUOTA:
+		error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
+					(fs_disk_quota_t *)addr);
+		break;
+	case Q_XGETPQUOTA:
+		error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
+					(fs_disk_quota_t *)addr);
+		break;
+
+	case Q_XSETQLIM:
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_USER,
 					     (fs_disk_quota_t *)addr);
 		break;
-
-	       case Q_XSETGQLIM:
+	case Q_XSETGQLIM:
 		if (vfsp->vfs_flag & VFS_RDONLY)
 			return XFS_ERROR(EROFS);
 		error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
 					     (fs_disk_quota_t *)addr);
 		break;
-
-
-	      case Q_XGETGQUOTA:
-		error = xfs_qm_scall_getquota(mp, (xfs_dqid_t)id, XFS_DQ_GROUP,
-					(fs_disk_quota_t *)addr);
+	case Q_XSETPQLIM:
+		if (vfsp->vfs_flag & VFS_RDONLY)
+			return XFS_ERROR(EROFS);
+		error = xfs_qm_scall_setqlim(mp, (xfs_dqid_t)id, XFS_DQ_PROJ,
+					     (fs_disk_quota_t *)addr);
 		break;
 
-		/*
-		 * Quotas are entirely undefined after quotaoff in XFS quotas.
-		 * For instance, there's no way to set limits when quotaoff.
-		 */
-
-	      default:
+	default:
 		error = XFS_ERROR(EINVAL);
 		break;
 	}
@@ -286,8 +284,12 @@ xfs_qm_scall_quotaoff(
 	}
 	if (flags & XFS_GQUOTA_ACCT) {
 		dqtype |= XFS_QMOPT_GQUOTA;
-		flags |= (XFS_GQUOTA_CHKD | XFS_GQUOTA_ENFD);
+		flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
 		inactivate_flags |= XFS_GQUOTA_ACTIVE;
+	} else if (flags & XFS_PQUOTA_ACCT) {
+		dqtype |= XFS_QMOPT_PQUOTA;
+		flags |= (XFS_OQUOTA_CHKD | XFS_OQUOTA_ENFD);
+		inactivate_flags |= XFS_PQUOTA_ACTIVE;
 	}
 
 	/*
@@ -364,7 +366,8 @@ xfs_qm_scall_quotaoff(
 	/*
 	 * If quotas is completely disabled, close shop.
 	 */
-	if ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_ALL) {
+	if (((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET1) ||
+	    ((flags & XFS_MOUNT_QUOTA_ALL) == XFS_MOUNT_QUOTA_SET2)) {
 		mutex_unlock(&(XFS_QI_QOFFLOCK(mp)));
 		xfs_qm_destroy_quotainfo(mp);
 		return (0);
@@ -378,7 +381,7 @@ xfs_qm_scall_quotaoff(
 		XFS_PURGE_INODE(XFS_QI_UQIP(mp));
 		XFS_QI_UQIP(mp) = NULL;
 	}
-	if ((dqtype & XFS_QMOPT_GQUOTA) && XFS_QI_GQIP(mp)) {
+	if ((dqtype & (XFS_QMOPT_GQUOTA|XFS_QMOPT_PQUOTA)) && XFS_QI_GQIP(mp)) {
 		XFS_PURGE_INODE(XFS_QI_GQIP(mp));
 		XFS_QI_GQIP(mp) = NULL;
 	}
@@ -411,7 +414,8 @@ xfs_qm_scall_trunc_qfiles(
 		}
 	}
 
-	if ((flags & XFS_DQ_GROUP) && mp->m_sb.sb_gquotino != NULLFSINO) {
+	if ((flags & (XFS_DQ_GROUP|XFS_DQ_PROJ)) &&
+	    mp->m_sb.sb_gquotino != NULLFSINO) {
 		error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, 0, 0, &qip, 0);
 		if (! error) {
 			(void) xfs_truncate_file(mp, qip);
@@ -434,7 +438,7 @@ xfs_qm_scall_quotaon(
 	uint		flags)
 {
 	int		error;
-	unsigned long s;
+	unsigned long	s;
 	uint		qf;
 	uint		accflags;
 	__int64_t	sbflags;
@@ -468,9 +472,13 @@ xfs_qm_scall_quotaon(
 	    (mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) == 0 &&
 	    (flags & XFS_UQUOTA_ENFD))
 	    ||
+	    ((flags & XFS_PQUOTA_ACCT) == 0 &&
+	    (mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) == 0 &&
+	    (flags & XFS_OQUOTA_ENFD))
+	    ||
 	    ((flags & XFS_GQUOTA_ACCT) == 0 &&
 	    (mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) == 0 &&
-	    (flags & XFS_GQUOTA_ENFD))) {
+	    (flags & XFS_OQUOTA_ENFD))) {
 		qdprintk("Can't enforce without acct, flags=%x sbflags=%x\n",
 			flags, mp->m_sb.sb_qflags);
 		return XFS_ERROR(EINVAL);
@@ -504,6 +512,10 @@ xfs_qm_scall_quotaon(
 	 */
 	if  (((mp->m_sb.sb_qflags & XFS_UQUOTA_ACCT) !=
 	     (mp->m_qflags & XFS_UQUOTA_ACCT)) ||
+	     ((mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT) !=
+	     (mp->m_qflags & XFS_PQUOTA_ACCT)) ||
+	     ((mp->m_sb.sb_qflags & XFS_GQUOTA_ACCT) !=
+	     (mp->m_qflags & XFS_GQUOTA_ACCT)) ||
 	    (flags & XFS_ALL_QUOTA_ENFD) == 0)
 		return (0);
 
@@ -521,7 +533,6 @@ xfs_qm_scall_quotaon(
 }
 
 
-
 /*
  * Return quota status information, such as uquota-off, enforcements, etc.
  */
@@ -606,7 +617,8 @@ xfs_qm_scall_setqlim(
 	if (!capable(CAP_SYS_ADMIN))
 		return XFS_ERROR(EPERM);
 
-	if ((newlim->d_fieldmask & (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK)) == 0)
+	if ((newlim->d_fieldmask &
+	    (FS_DQ_LIMIT_MASK|FS_DQ_TIMER_MASK|FS_DQ_WARNS_MASK)) == 0)
 		return (0);
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SETQLIM);
@@ -691,12 +703,23 @@ xfs_qm_scall_setqlim(
 		qdprintk("ihard %Ld < isoft %Ld\n", hard, soft);
 	}
 
+	/*
+	 * Update warnings counter(s) if requested
+	 */
+	if (newlim->d_fieldmask & FS_DQ_BWARNS)
+		INT_SET(ddq->d_bwarns, ARCH_CONVERT, newlim->d_bwarns);
+	if (newlim->d_fieldmask & FS_DQ_IWARNS)
+		INT_SET(ddq->d_iwarns, ARCH_CONVERT, newlim->d_iwarns);
+	if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
+		INT_SET(ddq->d_rtbwarns, ARCH_CONVERT, newlim->d_rtbwarns);
+
 	if (id == 0) {
 		/*
 		 * Timelimits for the super user set the relative time
 		 * the other users can be over quota for this file system.
 		 * If it is zero a default is used.  Ditto for the default
-		 * soft and hard limit values (already done, above).
+		 * soft and hard limit values (already done, above), and
+		 * for warnings.
 		 */
 		if (newlim->d_fieldmask & FS_DQ_BTIMER) {
 			mp->m_quotainfo->qi_btimelimit = newlim->d_btimer;
@@ -710,7 +733,13 @@ xfs_qm_scall_setqlim(
 			mp->m_quotainfo->qi_rtbtimelimit = newlim->d_rtbtimer;
 			INT_SET(ddq->d_rtbtimer, ARCH_CONVERT, newlim->d_rtbtimer);
 		}
-	} else /* if (XFS_IS_QUOTA_ENFORCED(mp)) */ {
+		if (newlim->d_fieldmask & FS_DQ_BWARNS)
+			mp->m_quotainfo->qi_bwarnlimit = newlim->d_bwarns;
+		if (newlim->d_fieldmask & FS_DQ_IWARNS)
+			mp->m_quotainfo->qi_iwarnlimit = newlim->d_iwarns;
+		if (newlim->d_fieldmask & FS_DQ_RTBWARNS)
+			mp->m_quotainfo->qi_rtbwarnlimit = newlim->d_rtbwarns;
+	} else {
 		/*
 		 * If the user is now over quota, start the timelimit.
 		 * The user will not be 'warned'.
@@ -776,9 +805,9 @@ xfs_qm_log_quotaoff_end(
 	xfs_qoff_logitem_t	*startqoff,
 	uint			flags)
 {
-	xfs_trans_t	       *tp;
+	xfs_trans_t		*tp;
 	int			error;
-	xfs_qoff_logitem_t     *qoffi;
+	xfs_qoff_logitem_t	*qoffi;
 
 	tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QUOTAOFF_END);
 
@@ -928,18 +957,26 @@ xfs_qm_export_dquot(
 
 STATIC uint
 xfs_qm_import_qtype_flags(
-	uint uflags)
+	uint		uflags)
 {
+	uint		oflags = 0;
+
 	/*
-	 * Can't be both at the same time.
+	 * Can't be more than one, or none.
 	 */
 	if (((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ==
-	     (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
-	    ((uflags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) == 0))
+			(XFS_GROUP_QUOTA | XFS_USER_QUOTA)) ||
+	    ((uflags & (XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ==
+			(XFS_GROUP_QUOTA | XFS_PROJ_QUOTA)) ||
+	    ((uflags & (XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ==
+			(XFS_USER_QUOTA | XFS_PROJ_QUOTA)) ||
+	    ((uflags & (XFS_GROUP_QUOTA|XFS_USER_QUOTA|XFS_PROJ_QUOTA)) == 0))
 		return (0);
 
-	return (uflags & XFS_USER_QUOTA) ?
-		XFS_DQ_USER : XFS_DQ_GROUP;
+	oflags |= (uflags & XFS_USER_QUOTA) ? XFS_DQ_USER : 0;
+	oflags |= (uflags & XFS_PROJ_QUOTA) ? XFS_DQ_PROJ : 0;
+	oflags |= (uflags & XFS_GROUP_QUOTA) ? XFS_DQ_GROUP: 0;
+	return oflags;
 }
 
 STATIC uint
@@ -947,14 +984,19 @@ xfs_qm_export_qtype_flags(
 	uint flags)
 {
 	/*
-	 * Can't be both at the same time.
+	 * Can't be more than one, or none.
 	 */
-	ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) !=
-		(XFS_GROUP_QUOTA | XFS_USER_QUOTA));
-	ASSERT((flags & (XFS_GROUP_QUOTA | XFS_USER_QUOTA)) != 0);
+	ASSERT((flags & (XFS_PROJ_QUOTA | XFS_USER_QUOTA)) !=
+		(XFS_PROJ_QUOTA | XFS_USER_QUOTA));
+	ASSERT((flags & (XFS_PROJ_QUOTA | XFS_GROUP_QUOTA)) !=
+		(XFS_PROJ_QUOTA | XFS_GROUP_QUOTA));
+	ASSERT((flags & (XFS_USER_QUOTA | XFS_GROUP_QUOTA)) !=
+		(XFS_USER_QUOTA | XFS_GROUP_QUOTA));
+	ASSERT((flags & (XFS_PROJ_QUOTA|XFS_USER_QUOTA|XFS_GROUP_QUOTA)) != 0);
 
 	return (flags & XFS_DQ_USER) ?
-		XFS_USER_QUOTA : XFS_GROUP_QUOTA;
+		XFS_USER_QUOTA : (flags & XFS_DQ_PROJ) ?
+			XFS_PROJ_QUOTA : XFS_GROUP_QUOTA;
 }
 
 STATIC uint
@@ -965,12 +1007,14 @@ xfs_qm_import_flags(
 
 	if (uflags & XFS_QUOTA_UDQ_ACCT)
 		flags |= XFS_UQUOTA_ACCT;
+	if (uflags & XFS_QUOTA_PDQ_ACCT)
+		flags |= XFS_PQUOTA_ACCT;
 	if (uflags & XFS_QUOTA_GDQ_ACCT)
 		flags |= XFS_GQUOTA_ACCT;
 	if (uflags & XFS_QUOTA_UDQ_ENFD)
 		flags |= XFS_UQUOTA_ENFD;
-	if (uflags & XFS_QUOTA_GDQ_ENFD)
-		flags |= XFS_GQUOTA_ENFD;
+	if (uflags & (XFS_QUOTA_PDQ_ENFD|XFS_QUOTA_GDQ_ENFD))
+		flags |= XFS_OQUOTA_ENFD;
 	return (flags);
 }
 
@@ -984,12 +1028,16 @@ xfs_qm_export_flags(
 	uflags = 0;
 	if (flags & XFS_UQUOTA_ACCT)
 		uflags |= XFS_QUOTA_UDQ_ACCT;
+	if (flags & XFS_PQUOTA_ACCT)
+		uflags |= XFS_QUOTA_PDQ_ACCT;
 	if (flags & XFS_GQUOTA_ACCT)
 		uflags |= XFS_QUOTA_GDQ_ACCT;
 	if (flags & XFS_UQUOTA_ENFD)
 		uflags |= XFS_QUOTA_UDQ_ENFD;
-	if (flags & XFS_GQUOTA_ENFD)
-		uflags |= XFS_QUOTA_GDQ_ENFD;
+	if (flags & (XFS_OQUOTA_ENFD)) {
+		uflags |= (flags & XFS_GQUOTA_ACCT) ?
+			XFS_QUOTA_GDQ_ENFD : XFS_QUOTA_PDQ_ENFD;
+	}
 	return (uflags);
 }
 
@@ -1070,7 +1118,7 @@ again:
 			xfs_qm_dqrele(ip->i_udquot);
 			ip->i_udquot = NULL;
 		}
-		if ((flags & XFS_GQUOTA_ACCT) && ip->i_gdquot) {
+		if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
 			xfs_qm_dqrele(ip->i_gdquot);
 			ip->i_gdquot = NULL;
 		}
@@ -1160,7 +1208,6 @@ xfs_qm_dqtest_print(
 {
 	cmn_err(CE_DEBUG, "-----------DQTEST DQUOT----------------");
 	cmn_err(CE_DEBUG, "---- dquot ID = %d", d->d_id);
-	cmn_err(CE_DEBUG, "---- type     = %s", XFS_QM_ISUDQ(d)? "USR" : "GRP");
 	cmn_err(CE_DEBUG, "---- fs       = 0x%p", d->q_mount);
 	cmn_err(CE_DEBUG, "---- bcount   = %Lu (0x%x)",
 		d->d_bcount, (int)d->d_bcount);
@@ -1231,7 +1278,7 @@ xfs_dqtest_cmp2(
 #ifdef QUOTADEBUG
 	if (!err) {
 		cmn_err(CE_DEBUG, "%d [%s] [0x%p] qchecked",
-			d->d_id, XFS_QM_ISUDQ(d) ? "USR" : "GRP", d->q_mount);
+			d->d_id, DQFLAGTO_TYPESTR(d), d->q_mount);
 	}
 #endif
 	return (err);
@@ -1287,6 +1334,7 @@ STATIC void
 xfs_qm_internalqcheck_get_dquots(
 	xfs_mount_t	*mp,
 	xfs_dqid_t	uid,
+	xfs_dqid_t	projid,
 	xfs_dqid_t	gid,
 	xfs_dqtest_t	**ud,
 	xfs_dqtest_t	**gd)
@@ -1295,6 +1343,8 @@ xfs_qm_internalqcheck_get_dquots(
 		xfs_qm_internalqcheck_dqget(mp, uid, XFS_DQ_USER, ud);
 	if (XFS_IS_GQUOTA_ON(mp))
 		xfs_qm_internalqcheck_dqget(mp, gid, XFS_DQ_GROUP, gd);
+	else if (XFS_IS_PQUOTA_ON(mp))
+		xfs_qm_internalqcheck_dqget(mp, projid, XFS_DQ_PROJ, gd);
 }
 
 
@@ -1362,13 +1412,14 @@ xfs_qm_internalqcheck_adjust(
 	}
 	xfs_qm_internalqcheck_get_dquots(mp,
 					(xfs_dqid_t) ip->i_d.di_uid,
+					(xfs_dqid_t) ip->i_d.di_projid,
 					(xfs_dqid_t) ip->i_d.di_gid,
 					&ud, &gd);
 	if (XFS_IS_UQUOTA_ON(mp)) {
 		ASSERT(ud);
 		xfs_qm_internalqcheck_dqadjust(ip, ud);
 	}
-	if (XFS_IS_GQUOTA_ON(mp)) {
+	if (XFS_IS_OQUOTA_ON(mp)) {
 		ASSERT(gd);
 		xfs_qm_internalqcheck_dqadjust(ip, gd);
 	}
diff --git a/fs/xfs/quota/xfs_quota_priv.h b/fs/xfs/quota/xfs_quota_priv.h
index 414b600..bf413e7 100644
--- a/fs/xfs/quota/xfs_quota_priv.h
+++ b/fs/xfs/quota/xfs_quota_priv.h
@@ -56,6 +56,7 @@
 #define XFS_QI_RTBTIMELIMIT(mp) ((mp)->m_quotainfo->qi_rtbtimelimit)
 #define XFS_QI_ITIMELIMIT(mp)	((mp)->m_quotainfo->qi_itimelimit)
 #define XFS_QI_BWARNLIMIT(mp)	((mp)->m_quotainfo->qi_bwarnlimit)
+#define XFS_QI_RTBWARNLIMIT(mp)	((mp)->m_quotainfo->qi_rtbwarnlimit)
 #define XFS_QI_IWARNLIMIT(mp)	((mp)->m_quotainfo->qi_iwarnlimit)
 #define XFS_QI_QOFFLOCK(mp)	((mp)->m_quotainfo->qi_quotaofflock)
 
@@ -102,7 +103,8 @@ static inline int XQMISLCKD(struct xfs_dqhash *h)
 				     (xfs_Gqm->qm_grp_dqhtable + \
 				      XFS_DQ_HASHVAL(mp, id)))
 #define XFS_IS_DQTYPE_ON(mp, type)   (type == XFS_DQ_USER ? \
-				      XFS_IS_UQUOTA_ON(mp):XFS_IS_GQUOTA_ON(mp))
+					XFS_IS_UQUOTA_ON(mp) : \
+					XFS_IS_OQUOTA_ON(mp))
 #define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
 	!dqp->q_core.d_blk_hardlimit && \
 	!dqp->q_core.d_blk_softlimit && \
@@ -177,16 +179,11 @@ for ((dqp) = (qlist)->qh_next; (dqp) != (xfs_dquot_t *)(qlist); \
 	(!((dqp)->q_core.d_id))
 
 #define XFS_PURGE_INODE(ip)		\
-	{				\
-	  vmap_t dqvmap;		\
-	  vnode_t *dqvp;		\
-	  dqvp = XFS_ITOV(ip);		\
-	  VMAP(dqvp, dqvmap);		\
-	  VN_RELE(dqvp);		\
-	}
+	IRELE(ip);
 
 #define DQFLAGTO_TYPESTR(d)	(((d)->dq_flags & XFS_DQ_USER) ? "USR" : \
-				 (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : "???"))
+				 (((d)->dq_flags & XFS_DQ_GROUP) ? "GRP" : \
+				 (((d)->dq_flags & XFS_DQ_PROJ) ? "PRJ":"???")))
 #define DQFLAGTO_DIRTYSTR(d)	(XFS_DQ_IS_DIRTY(d) ? "DIRTY" : "NOTDIRTY")
 
 #endif	/* __XFS_QUOTA_PRIV_H__ */
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index 149b2a1..3b99daf 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -187,7 +187,7 @@ xfs_trans_dup_dqinfo(
 /*
  * Wrap around mod_dquot to account for both user and group quotas.
  */
-void
+STATIC void
 xfs_trans_mod_dquot_byino(
 	xfs_trans_t	*tp,
 	xfs_inode_t	*ip,
@@ -207,12 +207,10 @@ xfs_trans_mod_dquot_byino(
 	if (tp->t_dqinfo == NULL)
 		xfs_trans_alloc_dqinfo(tp);
 
-	if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot) {
+	if (XFS_IS_UQUOTA_ON(mp) && ip->i_udquot)
 		(void) xfs_trans_mod_dquot(tp, ip->i_udquot, field, delta);
-	}
-	if (XFS_IS_GQUOTA_ON(mp) && ip->i_gdquot) {
+	if (XFS_IS_OQUOTA_ON(mp) && ip->i_gdquot)
 		(void) xfs_trans_mod_dquot(tp, ip->i_gdquot, field, delta);
-	}
 }
 
 STATIC xfs_dqtrx_t *
@@ -368,7 +366,7 @@ xfs_trans_dqlockedjoin(
  * Unreserve just the reservations done by this transaction.
  * dquot is still left locked at exit.
  */
-void
+STATIC void
 xfs_trans_apply_dquot_deltas(
 	xfs_trans_t		*tp)
 {
@@ -499,7 +497,7 @@ xfs_trans_apply_dquot_deltas(
 			 * Adjust the RT reservation.
 			 */
 			if (qtrx->qt_rtblk_res != 0) {
-				if (qtrx->qt_blk_res != qtrx->qt_blk_res_used) {
+				if (qtrx->qt_rtblk_res != qtrx->qt_rtblk_res_used) {
 					if (qtrx->qt_rtblk_res >
 					    qtrx->qt_rtblk_res_used)
 					       dqp->q_res_rtbcount -= (xfs_qcnt_t)
@@ -532,12 +530,6 @@ xfs_trans_apply_dquot_deltas(
 					    (xfs_qcnt_t)qtrx->qt_icount_delta;
 			}
 
-
-#ifdef QUOTADEBUG
-			if (qtrx->qt_rtblk_res != 0)
-				cmn_err(CE_DEBUG, "RT res %d for 0x%p\n",
-					(int) qtrx->qt_rtblk_res, dqp);
-#endif
 			ASSERT(dqp->q_res_bcount >=
 				INT_GET(dqp->q_core.d_bcount, ARCH_CONVERT));
 			ASSERT(dqp->q_res_icount >=
@@ -638,7 +630,10 @@ xfs_trans_dqresv(
 	int		error;
 	xfs_qcnt_t	hardlimit;
 	xfs_qcnt_t	softlimit;
-	time_t		btimer;
+	time_t		timer;
+	xfs_qwarncnt_t	warns;
+	xfs_qwarncnt_t	warnlimit;
+	xfs_qcnt_t	count;
 	xfs_qcnt_t	*resbcountp;
 	xfs_quotainfo_t	*q = mp->m_quotainfo;
 
@@ -653,7 +648,9 @@ xfs_trans_dqresv(
 		softlimit = INT_GET(dqp->q_core.d_blk_softlimit, ARCH_CONVERT);
 		if (!softlimit)
 			softlimit = q->qi_bsoftlimit;
-		btimer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT);
+		timer = INT_GET(dqp->q_core.d_btimer, ARCH_CONVERT);
+		warns = INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT);
+		warnlimit = XFS_QI_BWARNLIMIT(dqp->q_mount);
 		resbcountp = &dqp->q_res_bcount;
 	} else {
 		ASSERT(flags & XFS_TRANS_DQ_RES_RTBLKS);
@@ -663,7 +660,9 @@ xfs_trans_dqresv(
 		softlimit = INT_GET(dqp->q_core.d_rtb_softlimit, ARCH_CONVERT);
 		if (!softlimit)
 			softlimit = q->qi_rtbsoftlimit;
-		btimer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT);
+		timer = INT_GET(dqp->q_core.d_rtbtimer, ARCH_CONVERT);
+		warns = INT_GET(dqp->q_core.d_rtbwarns, ARCH_CONVERT);
+		warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount);
 		resbcountp = &dqp->q_res_rtbcount;
 	}
 	error = 0;
@@ -693,37 +692,36 @@ xfs_trans_dqresv(
 				 * If timer or warnings has expired,
 				 * return EDQUOT
 				 */
-				if ((btimer != 0 && get_seconds() > btimer) ||
-				    (dqp->q_core.d_bwarns &&
-				     INT_GET(dqp->q_core.d_bwarns, ARCH_CONVERT) >=
-				     XFS_QI_BWARNLIMIT(dqp->q_mount))) {
+				if ((timer != 0 && get_seconds() > timer) ||
+				    (warns != 0 && warns >= warnlimit)) {
 					error = EDQUOT;
 					goto error_return;
 				}
 			}
 		}
 		if (ninos > 0) {
-			hardlimit = INT_GET(dqp->q_core.d_ino_hardlimit, ARCH_CONVERT);
+			count = INT_GET(dqp->q_core.d_icount, ARCH_CONVERT);
+			timer = INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT);
+			warns = INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT);
+			warnlimit = XFS_QI_IWARNLIMIT(dqp->q_mount);
+			hardlimit = INT_GET(dqp->q_core.d_ino_hardlimit,
+						ARCH_CONVERT);
 			if (!hardlimit)
 				hardlimit = q->qi_ihardlimit;
-			softlimit = INT_GET(dqp->q_core.d_ino_softlimit, ARCH_CONVERT);
+			softlimit = INT_GET(dqp->q_core.d_ino_softlimit,
+						ARCH_CONVERT);
 			if (!softlimit)
 				softlimit = q->qi_isoftlimit;
-			if (hardlimit > 0ULL &&
-			    INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= hardlimit) {
+			if (hardlimit > 0ULL && count >= hardlimit) {
 				error = EDQUOT;
 				goto error_return;
-			} else if (softlimit > 0ULL &&
-				   INT_GET(dqp->q_core.d_icount, ARCH_CONVERT) >= softlimit) {
+			} else if (softlimit > 0ULL && count >= softlimit) {
 				/*
 				 * If timer or warnings has expired,
 				 * return EDQUOT
 				 */
-				if ((dqp->q_core.d_itimer &&
-				     get_seconds() > INT_GET(dqp->q_core.d_itimer, ARCH_CONVERT)) ||
-				    (dqp->q_core.d_iwarns &&
-				     INT_GET(dqp->q_core.d_iwarns, ARCH_CONVERT) >=
-				     XFS_QI_IWARNLIMIT(dqp->q_mount))) {
+				if ((timer != 0 && get_seconds() > timer) ||
+				     (warns != 0 && warns >= warnlimit)) {
 					error = EDQUOT;
 					goto error_return;
 				}