[PATCH] fuse: fuse_copy_finish() order fix

fuse_copy_finish() must be called before request_end(), since the later might
sleep, and no sleeping is allowed between fuse_copy_one() and
fuse_copy_finish() because of kmap_atomic()/kunmap_atomic() used in them.
Signed-off-by: NMiklos Szeredi <miklos@szeredi.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/fuse/dev.c

@@ -773,8 +773,10 @@ static ssize_t fuse_dev_writev(struct file *file, const struct iovec *iov,
 
 	list_del_init(&req->list);
 	if (req->interrupted) {
-		request_end(fc, req);
+		spin_unlock(&fuse_lock);
 		fuse_copy_finish(&cs);
+		spin_lock(&fuse_lock);
+		request_end(fc, req);
 		return -ENOENT;
 	}
 	req->out.h = oh;