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ocfs2: submit disk heartbeat bio using WRITE_SYNC 

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@jp.fujitsu.com>
Acked-by: Tao Ma <tm@tao.ma>
Acked-by: Sunil Mushran <sunil.mushran@gmail.com>
Cc: Srinivas Eeeda <srinivas.eeda@oracle.com>
Reviewed-by: Jie Liu <jeff.liu@oracle.com>
Tested-by: Gurudas Pai <gurudas.pai@oracle.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Noboru Iwamatsu 2013-07-03 15:01:04 -07:00 committed by Linus Torvalds
parent ef962df057
commit e873fdb525
1 changed files with 1 additions and 1 deletions
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2
fs/ocfs2/cluster/heartbeat.c
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@ -500,7 +500,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
} }
atomic_inc(&write_wc->wc_num_reqs); atomic_inc(&write_wc->wc_num_reqs);
submit_bio(WRITE, bio); submit_bio(WRITE_SYNC, bio);
status = 0; status = 0;
bail: bail: