From 935fcc56abc321ca828f2d1fbb732fd478fd3449 Mon Sep 17 00:00:00 2001 From: wuzhouhui Date: Thu, 22 Mar 2018 22:22:38 +0800 Subject: dm mpath: only flush workqueue when needed The workqueues are shared by many multipath devices, only flush whole workqueue when necessary. Otherwise, we just flush works as needed. Signed-off-by: wuzhouhui Signed-off-by: Mike Snitzer --- drivers/md/dm-mpath.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index d6a66921daf4..2ee5e357a0a7 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -1211,14 +1211,16 @@ static void flush_multipath_work(struct multipath *m) set_bit(MPATHF_PG_INIT_DISABLED, &m->flags); smp_mb__after_atomic(); - flush_workqueue(kmpath_handlerd); + if (atomic_read(&m->pg_init_in_progress)) + flush_workqueue(kmpath_handlerd); multipath_wait_for_pg_init_completion(m); clear_bit(MPATHF_PG_INIT_DISABLED, &m->flags); smp_mb__after_atomic(); } - flush_workqueue(kmultipathd); + if (m->queue_mode == DM_TYPE_BIO_BASED) + flush_work(&m->process_queued_bios); flush_work(&m->trigger_event); } -- cgit v1.2.3