[Xen-devel] [PATCH 1/1] xen-blkback: do not wake up shutdown_wq after xen_blkif_schedule() is stopped

[Dongli Zhang <dongli.zhang@xxxxxxxxxx>]

There is no need to wake up xen_blkif_schedule() as kthread_stop() is able
to already wake up the kernel thread.

Signed-off-by: Dongli Zhang <dongli.zhang@xxxxxxxxxx>
---
 drivers/block/xen-blkback/xenbus.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/block/xen-blkback/xenbus.c 
b/drivers/block/xen-blkback/xenbus.c
index a4bc74e..37ac59e 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -254,10 +254,8 @@ static int xen_blkif_disconnect(struct xen_blkif *blkif)
                if (!ring->active)
                        continue;
 
-               if (ring->xenblkd) {
+               if (ring->xenblkd)
                        kthread_stop(ring->xenblkd);
-                       wake_up(&ring->shutdown_wq);
-               }
 
                /* The above kthread_stop() guarantees that at this point we
                 * don't have any discard_io or other_io requests. So, checking
-- 
2.7.4


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel