Commit 2d58f63f authored Jul 11, 2018 by Matthew Wilcox Committed by Dominique Martinet Aug 13, 2018

9p: Fix comment on smp_wmb

The previous comment misled me into thinking the barrier wasn't needed
at all.

Link: http://lkml.kernel.org/r/20180711210225.19730-2-willy@infradead.org


Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>

parent 7913690d

net/9p/client.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -448,7 +448,7 @@ 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;

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