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authorwuzhouhui <wuzhouhui14@mails.ucas.ac.cn>2018-03-22 22:22:38 +0800
committerMike Snitzer <snitzer@redhat.com>2018-12-18 09:02:25 -0500
commit935fcc56abc321ca828f2d1fbb732fd478fd3449 (patch)
treeb991c09b72301111e7ec702fec18b6e03f888a3a /drivers/md/dm-mpath.c
parent2adc5c559a0770ef75d1647fbf557c7f56194ef8 (diff)
downloadlinux-935fcc56abc321ca828f2d1fbb732fd478fd3449.tar.bz2
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 <wuzhouhui14@mails.ucas.ac.cn> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
-rw-r--r--drivers/md/dm-mpath.c6
1 files 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);
}