ocfs2: submit disk heartbeat bio using WRITE_SYNC
authorNoboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
Wed, 3 Jul 2013 22:01:04 +0000 (15:01 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 3 Jul 2013 23:07:24 +0000 (16:07 -0700)
commite873fdb5259ac62cf099621590645470c12a1d21
treee723f10745a9ae1a95a141a7b25ff6b033a8d360
parentef962df057aaafd714f5c22ba3de1be459571fdf
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>
fs/ocfs2/cluster/heartbeat.c