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Commit 935fcc56 authored by wuzhouhui's avatar wuzhouhui Committed by Mike Snitzer
Browse files

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: default avatarwuzhouhui <wuzhouhui14@mails.ucas.ac.cn>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 2adc5c55

drivers/md/dm-mpath.c

+4 −2
Original line number Diff line number Diff line
@@ -1211,6 +1211,7 @@ static void flush_multipath_work(struct multipath *m) 
		set_bit(MPATHF_PG_INIT_DISABLED, &m->flags);

		smp_mb__after_atomic();



		if (atomic_read(&m->pg_init_in_progress))

			flush_workqueue(kmpath_handlerd);

		multipath_wait_for_pg_init_completion(m);
@@ -1218,7 +1219,8 @@ static void flush_multipath_work(struct multipath *m) 
		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);

}