[PATCH 08/18] xfs: stop using q_core counters in the quota code

["Darrick J. Wong" <darrick.wong@oracle.com>]

From: Darrick J. Wong <darrick.wong@oracle.com>

Add counter fields to the incore dquot, and use that instead of the ones
in qcore.  This eliminates a bunch of endian conversions and will
eventually allow us to remove qcore entirely.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/scrub/quota.c     |   18 ++++++------------
 fs/xfs/xfs_dquot.c       |   47 +++++++++++++++++++++++++---------------------
 fs/xfs/xfs_dquot.h       |    3 +++
 fs/xfs/xfs_qm.c          |    6 +++---
 fs/xfs/xfs_qm.h          |    6 +++---
 fs/xfs/xfs_trace.h       |    4 ++--
 fs/xfs/xfs_trans_dquot.c |   36 ++++++++++++++---------------------
 7 files changed, 57 insertions(+), 63 deletions(-)


diff --git a/fs/xfs/scrub/quota.c b/fs/xfs/scrub/quota.c
index 1a1c6996fc69..2fc2625feca0 100644
--- a/fs/xfs/scrub/quota.c
+++ b/fs/xfs/scrub/quota.c
@@ -82,9 +82,6 @@ xchk_quota_item(
 	struct xfs_disk_dquot	*d = &dq->q_core;
 	struct xfs_quotainfo	*qi = mp->m_quotainfo;
 	xfs_fileoff_t		offset;
-	unsigned long long	bcount;
-	unsigned long long	icount;
-	unsigned long long	rcount;
 	xfs_ino_t		fs_icount;
 	int			error = 0;
 
@@ -128,9 +125,6 @@ xchk_quota_item(
 		xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, offset);
 
 	/* Check the resource counts. */
-	bcount = be64_to_cpu(d->d_bcount);
-	icount = be64_to_cpu(d->d_icount);
-	rcount = be64_to_cpu(d->d_rtbcount);
 	fs_icount = percpu_counter_sum(&mp->m_icount);
 
 	/*
@@ -139,15 +133,15 @@ xchk_quota_item(
 	 * if there are no quota limits.
 	 */
 	if (xfs_sb_version_hasreflink(&mp->m_sb)) {
-		if (mp->m_sb.sb_dblocks < bcount)
+		if (mp->m_sb.sb_dblocks < dq->q_blk.count)
 			xchk_fblock_set_warning(sc, XFS_DATA_FORK,
 					offset);
 	} else {
-		if (mp->m_sb.sb_dblocks < bcount)
+		if (mp->m_sb.sb_dblocks < dq->q_blk.count)
 			xchk_fblock_set_corrupt(sc, XFS_DATA_FORK,
 					offset);
 	}
-	if (icount > fs_icount || rcount > mp->m_sb.sb_rblocks)
+	if (dq->q_ino.count > fs_icount || dq->q_rtb.count > mp->m_sb.sb_rblocks)
 		xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, offset);
 
 	/*
@@ -159,15 +153,15 @@ xchk_quota_item(
 		goto out;
 
 	if (dq->q_blk.hardlimit != 0 &&
-	    bcount > dq->q_blk.hardlimit)
+	    dq->q_blk.count > dq->q_blk.hardlimit)
 		xchk_fblock_set_warning(sc, XFS_DATA_FORK, offset);
 
 	if (dq->q_ino.hardlimit != 0 &&
-	    icount > dq->q_ino.hardlimit)
+	    dq->q_ino.count > dq->q_ino.hardlimit)
 		xchk_fblock_set_warning(sc, XFS_DATA_FORK, offset);
 
 	if (dq->q_rtb.hardlimit != 0 &&
-	    rcount > dq->q_rtb.hardlimit)
+	    dq->q_rtb.count > dq->q_rtb.hardlimit)
 		xchk_fblock_set_warning(sc, XFS_DATA_FORK, offset);
 
 out:
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 63f744bcbc90..02eae8c2ba1b 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -133,9 +133,9 @@ xfs_qm_adjust_dqtimers(
 
 	if (!d->d_btimer) {
 		if ((dq->q_blk.softlimit &&
-		     (be64_to_cpu(d->d_bcount) > dq->q_blk.softlimit)) ||
+		     (dq->q_blk.count > dq->q_blk.softlimit)) ||
 		    (dq->q_blk.hardlimit &&
-		     (be64_to_cpu(d->d_bcount) > dq->q_blk.hardlimit))) {
+		     (dq->q_blk.count > dq->q_blk.hardlimit))) {
 			d->d_btimer = cpu_to_be32(ktime_get_real_seconds() +
 					defq->btimelimit);
 		} else {
@@ -143,18 +143,18 @@ xfs_qm_adjust_dqtimers(
 		}
 	} else {
 		if ((!dq->q_blk.softlimit ||
-		     (be64_to_cpu(d->d_bcount) <= dq->q_blk.softlimit)) &&
+		     (dq->q_blk.count <= dq->q_blk.softlimit)) &&
 		    (!dq->q_blk.hardlimit ||
-		    (be64_to_cpu(d->d_bcount) <= dq->q_blk.hardlimit))) {
+		    (dq->q_blk.count <= dq->q_blk.hardlimit))) {
 			d->d_btimer = 0;
 		}
 	}
 
 	if (!d->d_itimer) {
 		if ((dq->q_ino.softlimit &&
-		     (be64_to_cpu(d->d_icount) > dq->q_ino.softlimit)) ||
+		     (dq->q_ino.count > dq->q_ino.softlimit)) ||
 		    (dq->q_ino.hardlimit &&
-		     (be64_to_cpu(d->d_icount) > dq->q_ino.hardlimit))) {
+		     (dq->q_ino.count > dq->q_ino.hardlimit))) {
 			d->d_itimer = cpu_to_be32(ktime_get_real_seconds() +
 					defq->itimelimit);
 		} else {
@@ -162,18 +162,18 @@ xfs_qm_adjust_dqtimers(
 		}
 	} else {
 		if ((!dq->q_ino.softlimit ||
-		     (be64_to_cpu(d->d_icount) <= dq->q_ino.softlimit))  &&
+		     (dq->q_ino.count <= dq->q_ino.softlimit))  &&
 		    (!dq->q_ino.hardlimit ||
-		     (be64_to_cpu(d->d_icount) <= dq->q_ino.hardlimit))) {
+		     (dq->q_ino.count <= dq->q_ino.hardlimit))) {
 			d->d_itimer = 0;
 		}
 	}
 
 	if (!d->d_rtbtimer) {
 		if ((dq->q_rtb.softlimit &&
-		     (be64_to_cpu(d->d_rtbcount) > dq->q_rtb.softlimit)) ||
+		     (dq->q_rtb.count > dq->q_rtb.softlimit)) ||
 		    (dq->q_rtb.hardlimit &&
-		     (be64_to_cpu(d->d_rtbcount) > dq->q_rtb.hardlimit))) {
+		     (dq->q_rtb.count > dq->q_rtb.hardlimit))) {
 			d->d_rtbtimer = cpu_to_be32(ktime_get_real_seconds() +
 					defq->rtbtimelimit);
 		} else {
@@ -181,9 +181,9 @@ xfs_qm_adjust_dqtimers(
 		}
 	} else {
 		if ((!dq->q_rtb.softlimit ||
-		     (be64_to_cpu(d->d_rtbcount) <= dq->q_rtb.softlimit)) &&
+		     (dq->q_rtb.count <= dq->q_rtb.softlimit)) &&
 		    (!dq->q_rtb.hardlimit ||
-		     (be64_to_cpu(d->d_rtbcount) <= dq->q_rtb.hardlimit))) {
+		     (dq->q_rtb.count <= dq->q_rtb.hardlimit))) {
 			d->d_rtbtimer = 0;
 		}
 	}
@@ -538,13 +538,17 @@ xfs_dquot_from_disk(
 	dqp->q_rtb.hardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit);
 	dqp->q_rtb.softlimit = be64_to_cpu(ddqp->d_rtb_softlimit);
 
+	dqp->q_blk.count = be64_to_cpu(ddqp->d_bcount);
+	dqp->q_ino.count = be64_to_cpu(ddqp->d_icount);
+	dqp->q_rtb.count = be64_to_cpu(ddqp->d_rtbcount);
+
 	/*
 	 * Reservation counters are defined as reservation plus current usage
 	 * to avoid having to add every time.
 	 */
-	dqp->q_blk.reserved = be64_to_cpu(ddqp->d_bcount);
-	dqp->q_ino.reserved = be64_to_cpu(ddqp->d_icount);
-	dqp->q_rtb.reserved = be64_to_cpu(ddqp->d_rtbcount);
+	dqp->q_blk.reserved = dqp->q_blk.count;
+	dqp->q_ino.reserved = dqp->q_ino.count;
+	dqp->q_rtb.reserved = dqp->q_rtb.count;
 
 	/* initialize the dquot speculative prealloc thresholds */
 	xfs_dquot_set_prealloc_limits(dqp);
@@ -565,6 +569,10 @@ xfs_dquot_to_disk(
 	ddqp->d_ino_softlimit = cpu_to_be64(dqp->q_ino.softlimit);
 	ddqp->d_rtb_hardlimit = cpu_to_be64(dqp->q_rtb.hardlimit);
 	ddqp->d_rtb_softlimit = cpu_to_be64(dqp->q_rtb.softlimit);
+
+	ddqp->d_bcount = cpu_to_be64(dqp->q_blk.count);
+	ddqp->d_icount = cpu_to_be64(dqp->q_ino.count);
+	ddqp->d_rtbcount = cpu_to_be64(dqp->q_rtb.count);
 }
 
 /* Allocate and initialize the dquot buffer for this in-core dquot. */
@@ -1127,18 +1135,15 @@ xfs_qm_dqflush_check(
 	if (dqp->q_id == 0)
 		return NULL;
 
-	if (dqp->q_blk.softlimit &&
-	    be64_to_cpu(ddq->d_bcount) > dqp->q_blk.softlimit &&
+	if (dqp->q_blk.softlimit && dqp->q_blk.count > dqp->q_blk.softlimit &&
 	    !ddq->d_btimer)
 		return __this_address;
 
-	if (dqp->q_ino.softlimit &&
-	    be64_to_cpu(ddq->d_icount) > dqp->q_ino.softlimit &&
+	if (dqp->q_ino.softlimit && dqp->q_ino.count > dqp->q_ino.softlimit &&
 	    !ddq->d_itimer)
 		return __this_address;
 
-	if (dqp->q_rtb.softlimit &&
-	    be64_to_cpu(ddq->d_rtbcount) > dqp->q_rtb.softlimit &&
+	if (dqp->q_rtb.softlimit && dqp->q_rtb.count > dqp->q_rtb.softlimit &&
 	    !ddq->d_rtbtimer)
 		return __this_address;
 
diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index edb49788c476..23e05b0d7567 100644
--- a/fs/xfs/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
@@ -31,6 +31,9 @@ struct xfs_dquot_res {
 	/* Total resources allocated and reserved. */
 	xfs_qcnt_t		reserved;
 
+	/* Total resources allocated. */
+	xfs_qcnt_t		count;
+
 	/* Absolute and preferred limits. */
 	xfs_qcnt_t		hardlimit;
 	xfs_qcnt_t		softlimit;
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index 54fc3aac1a68..b47bba204240 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1093,14 +1093,14 @@ xfs_qm_quotacheck_dqadjust(
 	 * Adjust the inode count and the block count to reflect this inode's
 	 * resource usage.
 	 */
-	be64_add_cpu(&dqp->q_core.d_icount, 1);
+	dqp->q_ino.count++;
 	dqp->q_ino.reserved++;
 	if (nblks) {
-		be64_add_cpu(&dqp->q_core.d_bcount, nblks);
+		dqp->q_blk.count += nblks;
 		dqp->q_blk.reserved += nblks;
 	}
 	if (rtblks) {
-		be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks);
+		dqp->q_rtb.count += rtblks;
 		dqp->q_rtb.reserved += rtblks;
 	}
 
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 84cb8af468b7..6ed4ae942603 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -26,9 +26,9 @@ extern struct kmem_zone	*xfs_qm_dqtrxzone;
 	!dqp->q_rtb.softlimit && \
 	!dqp->q_ino.hardlimit && \
 	!dqp->q_ino.softlimit && \
-	!dqp->q_core.d_bcount && \
-	!dqp->q_core.d_rtbcount && \
-	!dqp->q_core.d_icount)
+	!dqp->q_blk.count && \
+	!dqp->q_rtb.count && \
+	!dqp->q_ino.count)
 
 /*
  * This defines the unit of allocation of dquots.
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 7f744a37dc0e..851f97dfe9e3 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -880,8 +880,8 @@ DECLARE_EVENT_CLASS(xfs_dquot_class,
 		__entry->flags = dqp->dq_flags;
 		__entry->nrefs = dqp->q_nrefs;
 		__entry->res_bcount = dqp->q_blk.reserved;
-		__entry->bcount = be64_to_cpu(dqp->q_core.d_bcount);
-		__entry->icount = be64_to_cpu(dqp->q_core.d_icount);
+		__entry->bcount = dqp->q_blk.count;
+		__entry->icount = dqp->q_ino.count;
 		__entry->blk_hardlimit = dqp->q_blk.hardlimit;
 		__entry->blk_softlimit = dqp->q_blk.softlimit;
 		__entry->ino_hardlimit = dqp->q_ino.hardlimit;
diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index 7a3d64eb9fbf..b36d747989a7 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -309,7 +309,6 @@ xfs_trans_apply_dquot_deltas(
 	int			i, j;
 	struct xfs_dquot	*dqp;
 	struct xfs_dqtrx	*qtrx, *qa;
-	struct xfs_disk_dquot	*d;
 	int64_t			totalbdelta;
 	int64_t			totalrtbdelta;
 
@@ -341,7 +340,6 @@ xfs_trans_apply_dquot_deltas(
 			/*
 			 * adjust the actual number of blocks used
 			 */
-			d = &dqp->q_core;
 
 			/*
 			 * The issue here is - sometimes we don't make a blkquota
@@ -362,25 +360,22 @@ xfs_trans_apply_dquot_deltas(
 				qtrx->qt_delrtb_delta;
 #ifdef DEBUG
 			if (totalbdelta < 0)
-				ASSERT(be64_to_cpu(d->d_bcount) >=
-				       -totalbdelta);
+				ASSERT(dqp->q_blk.count >= -totalbdelta);
 
 			if (totalrtbdelta < 0)
-				ASSERT(be64_to_cpu(d->d_rtbcount) >=
-				       -totalrtbdelta);
+				ASSERT(dqp->q_rtb.count >= -totalrtbdelta);
 
 			if (qtrx->qt_icount_delta < 0)
-				ASSERT(be64_to_cpu(d->d_icount) >=
-				       -qtrx->qt_icount_delta);
+				ASSERT(dqp->q_ino.count >= -qtrx->qt_icount_delta);
 #endif
 			if (totalbdelta)
-				be64_add_cpu(&d->d_bcount, (xfs_qcnt_t)totalbdelta);
+				dqp->q_blk.count += totalbdelta;
 
 			if (qtrx->qt_icount_delta)
-				be64_add_cpu(&d->d_icount, (xfs_qcnt_t)qtrx->qt_icount_delta);
+				dqp->q_ino.count += qtrx->qt_icount_delta;
 
 			if (totalrtbdelta)
-				be64_add_cpu(&d->d_rtbcount, (xfs_qcnt_t)totalrtbdelta);
+				dqp->q_rtb.count += totalrtbdelta;
 
 			/*
 			 * Get any default limits in use.
@@ -467,12 +462,9 @@ xfs_trans_apply_dquot_deltas(
 					    (xfs_qcnt_t)qtrx->qt_icount_delta;
 			}
 
-			ASSERT(dqp->q_blk.reserved >=
-				be64_to_cpu(dqp->q_core.d_bcount));
-			ASSERT(dqp->q_ino.reserved >=
-				be64_to_cpu(dqp->q_core.d_icount));
-			ASSERT(dqp->q_rtb.reserved >=
-				be64_to_cpu(dqp->q_core.d_rtbcount));
+			ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count);
+			ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count);
+			ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count);
 		}
 	}
 }
@@ -645,7 +637,7 @@ xfs_trans_dqresv(
 			}
 		}
 		if (ninos > 0) {
-			total_count = dqp->q_res_icount + ninos;
+			total_count = dqp->q_ino.reserved + ninos;
 			timer = be32_to_cpu(dqp->q_core.d_itimer);
 			warns = be16_to_cpu(dqp->q_core.d_iwarns);
 			warnlimit = defq->iwarnlimit;
@@ -675,7 +667,7 @@ xfs_trans_dqresv(
 
 	/*
 	 * Change the reservation, but not the actual usage.
-	 * Note that q_blk.reserved = q_core.d_bcount + resv
+	 * Note that q_blk.reserved = q_blk.count + resv
 	 */
 	(*resbcountp) += (xfs_qcnt_t)nblks;
 	if (ninos != 0)
@@ -700,9 +692,9 @@ xfs_trans_dqresv(
 					    XFS_TRANS_DQ_RES_INOS,
 					    ninos);
 	}
-	ASSERT(dqp->q_blk.reserved >= be64_to_cpu(dqp->q_core.d_bcount));
-	ASSERT(dqp->q_rtb.reserved >= be64_to_cpu(dqp->q_core.d_rtbcount));
-	ASSERT(dqp->q_ino.reserved >= be64_to_cpu(dqp->q_core.d_icount));
+	ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count);
+	ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count);
+	ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count);
 
 	xfs_dqunlock(dqp);
 	return 0;