[Ocfs2-devel] [RESNET PATCH 1/4] ocfs2: submit disk heartbeat bio using WRITE_SYNC
Jeff Liu
jeff.liu at oracle.com
Fri Jun 28 21:00:53 PDT 2013
From: Noboru Iwamatsu <n_iwamatsu at jp.fujitsu.com>
Under heavy I/O load, writing the disk heartbeat can be
forced to wait for minutes, and this causes the node to
be fenced.
This patch tries to use WRITE_SYNC in submitting the heartbeat
bio, so that writing the heartbeat will have a priority over
other requests.
Signed-off-by: Noboru Iwamatsu <n_iwamatsu at jp.fujitsu.com>
Acked-by: Tao Ma <tm at tao.ma>
Acked-by: Sunil Mushran <sunil.mushran at gmail.com>
CC: Srinivas Eeeda <srinivas.eeda at oracle.com>
Reviewed-by: Jie Liu <jeff.liu at oracle.com>
Tested-by: Gurudas Pai <gurudas.pai at oracle.com>
---
fs/ocfs2/cluster/heartbeat.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 42252bf..f89b46b 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -500,7 +500,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
}
atomic_inc(&write_wc->wc_num_reqs);
- submit_bio(WRITE, bio);
+ submit_bio(WRITE_SYNC, bio);
status = 0;
bail:
--
1.7.9.5
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