The previous comment misled me into thinking the barrier wasn't needed at all. Signed-off-by: Matthew Wilcox <willy@xxxxxxxxxxxxx> --- net/9p/client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/9p/client.c b/net/9p/client.c index 18c5271910dc..999eceb8af98 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -447,7 +447,7 @@ void p9_client_cb(struct p9_client *c, struct p9_req_t *req, int status) /* * This barrier is needed to make sure any change made to req before - * the other thread wakes up will indeed be seen by the waiting side. + * the status change is visible to another thread */ smp_wmb(); req->status = status; -- 2.18.0
