[XFS] Merge a few minor fixes to the quota warning code.

SGI-PV: 938145
SGI-Modid: xfs-linux:xfs-kern:22901a

Signed-off-by: Nathan Scott <nathans@sgi.com>

fs/xfs/quota/xfs_dquot.c

@@ -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 ||

fs/xfs/quota/xfs_qm.c

@@ -1550,8 +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);
 	}
 

fs/xfs/quota/xfs_qm_syscalls.c

@@ -617,7 +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);
@@ -702,12 +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;
@@ -721,7 +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'.