[RFC v2 PATCH 3/3] xfs: automatically relog quotaoff start intent

[Brian Foster <bfoster@redhat.com>]

Signed-off-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/libxfs/xfs_trans_resv.c |  3 ++-
 fs/xfs/xfs_dquot_item.c        | 13 +++++++++++++
 fs/xfs/xfs_qm_syscalls.c       |  9 ++++++++-
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
index c55cd9a3dec9..88e222d0947a 100644
--- a/fs/xfs/libxfs/xfs_trans_resv.c
+++ b/fs/xfs/libxfs/xfs_trans_resv.c
@@ -866,7 +866,8 @@ xfs_trans_resv_calc(
 	resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT;
 
 	resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp);
-	resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT;
+	resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT;
+	resp->tr_qm_quotaoff.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
 
 	resp->tr_qm_equotaoff.tr_logres =
 		xfs_calc_qm_quotaoff_end_reservation();
diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c
index d60647d7197b..57b7c9b731b1 100644
--- a/fs/xfs/xfs_dquot_item.c
+++ b/fs/xfs/xfs_dquot_item.c
@@ -288,6 +288,18 @@ xfs_qm_qoff_logitem_format(
 	xlog_finish_iovec(lv, vecp, sizeof(struct xfs_qoff_logitem));
 }
 
+/*
+ * XXX: simulate relog callback with hardcoded ->iop_committed() callback
+ */
+static xfs_lsn_t
+xfs_qm_qoff_logitem_committed(
+	struct xfs_log_item	*lip,
+	xfs_lsn_t		lsn)
+{
+	xfs_trans_relog_queue(lip);
+	return lsn;
+}
+
 /*
  * There isn't much you can do to push a quotaoff item.  It is simply
  * stuck waiting for the log to be flushed to disk.
@@ -333,6 +345,7 @@ static const struct xfs_item_ops xfs_qm_qoffend_logitem_ops = {
 static const struct xfs_item_ops xfs_qm_qoff_logitem_ops = {
 	.iop_size	= xfs_qm_qoff_logitem_size,
 	.iop_format	= xfs_qm_qoff_logitem_format,
+	.iop_committed	= xfs_qm_qoff_logitem_committed,
 	.iop_push	= xfs_qm_qoff_logitem_push,
 };
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 1ea82764bf89..3f15f8576027 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -18,6 +18,7 @@
 #include "xfs_quota.h"
 #include "xfs_qm.h"
 #include "xfs_icache.h"
+#include "xfs_log.h"
 
 STATIC int
 xfs_qm_log_quotaoff(
@@ -50,7 +51,7 @@ xfs_qm_log_quotaoff(
 	 * We don't care about quotoff's performance.
 	 */
 	xfs_trans_set_sync(tp);
-	error = xfs_trans_commit(tp);
+	error = xfs_trans_relog(tp, &qoffi->qql_item);
 	if (error)
 		goto out;
 
@@ -227,7 +228,13 @@ xfs_qm_scall_quotaoff(
 	 *
 	 * So, we have QUOTAOFF start and end logitems; the start
 	 * logitem won't get overwritten until the end logitem appears...
+	 *
+	 * XXX: qoffend expects qoffstart in the AIL but not in the CIL. Force
+	 * the log after cancelling relogging to prevent item reinsert...
 	 */
+	//ssleep(3);
+	xfs_trans_relog_cancel(&qoffstart->qql_item);
+	xfs_log_force(mp, XFS_LOG_SYNC);
 	error = xfs_qm_log_quotaoff_end(mp, qoffstart, flags);
 	if (error) {
 		/* We're screwed now. Shutdown is the only option. */
-- 
2.20.1