X-Git-Url: https://git.stricted.de/?a=blobdiff_plain;f=drivers%2Fmd%2Fbcache%2Fclosure.c;h=9aba2017f0d1685ac5858ccf716c1f829681c853;hb=c0d8f455600820eb05208b57c50d4e90a58c4d96;hp=bd05a9a8c7cf933e028be5eefbd1cd178681e495;hpb=223828d8a6ef53f7671351fe5d08f18dca714830;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

diff --git a/drivers/md/bcache/closure.c b/drivers/md/bcache/closure.c
index bd05a9a8c7cf..9aba2017f0d1 100644
--- a/drivers/md/bcache/closure.c
+++ b/drivers/md/bcache/closure.c
@@ -66,16 +66,18 @@ static inline void closure_put_after_sub(struct closure *cl, int flags)
 		} else {
 			struct closure *parent = cl->parent;
 			struct closure_waitlist *wait = closure_waitlist(cl);
+			closure_fn *destructor = cl->fn;
 
 			closure_debug_destroy(cl);
 
+			smp_mb();
 			atomic_set(&cl->remaining, -1);
 
 			if (wait)
 				closure_wake_up(wait);
 
-			if (cl->fn)
-				cl->fn(cl);
+			if (destructor)
+				destructor(cl);
 
 			if (parent)
 				closure_put(parent);