[RFC,1/3] xfs: temporarily bypass oneshot grant tail verification
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Message ID 20191014181300.15494-2-bfoster@redhat.com
State New
Headers show
Series
  • xfs: grant head concurrency experiment
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Commit Message

Brian Foster Oct. 14, 2019, 6:12 p.m. UTC
Temporary hack to xlog_verify_grant_tail() to never set the
XLOG_TAIL_WARN oneshot warning flag. This results in a warning for
each instance of grant reservation tail overrun. For experimental
purposes only.

Not-signed-off-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/xfs_log.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

Patch
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diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 641d07f30a27..045ab648ca96 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -3742,15 +3742,17 @@  xlog_verify_grant_tail(
 		if (cycle - 1 != tail_cycle &&
 		    !(log->l_flags & XLOG_TAIL_WARN)) {
 			xfs_alert_tag(log->l_mp, XFS_PTAG_LOGRES,
-				"%s: cycle - 1 != tail_cycle", __func__);
-			log->l_flags |= XLOG_TAIL_WARN;
+				"%s: cycle - 1 (%d) != tail_cycle (%d)",
+				__func__, cycle - 1, tail_cycle);
+			//log->l_flags |= XLOG_TAIL_WARN;
+			return;
 		}
 
 		if (space > BBTOB(tail_blocks) &&
 		    !(log->l_flags & XLOG_TAIL_WARN)) {
 			xfs_alert_tag(log->l_mp, XFS_PTAG_LOGRES,
-				"%s: space > BBTOB(tail_blocks)", __func__);
-			log->l_flags |= XLOG_TAIL_WARN;
+				"%s: space (%d) > BBTOB(tail_blocks) (%d)", __func__, space, BBTOB(tail_blocks));
+			//log->l_flags |= XLOG_TAIL_WARN;
 		}
 	}
 }