Wake up work->done waiters even if the TIF_NEED_RESCHED task flag has been set. This patch fixes a regression introduced in commit d550dda (kernel v3.4).
Signed-off-by: Bart Van Assche <[email protected]> Reference: https://bugzilla.kernel.org/show_bug.cgi?id=60505 Cc: Michael S. Tsirkin <[email protected]> Cc: Asias He <[email protected]> Cc: Nadav Har'El <[email protected]> Cc: Abel Gordon <[email protected]> Cc: <[email protected]> # v3.4+ --- drivers/vhost/vhost.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 60aa5ad..cd544ae 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -227,8 +227,16 @@ static int vhost_worker(void *data) if (work) { __set_current_state(TASK_RUNNING); work->fn(work); - if (need_resched()) + if (need_resched()) { + spin_lock_irq(&dev->work_lock); + work->done_seq = seq; + if (work->flushing) + wake_up_all(&work->done); + spin_unlock_irq(&dev->work_lock); + + work = NULL; schedule(); + } } else schedule(); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
