linux-kernel - Re: [RFC PATCH 1/1] module: Make wait module's refcount to zero procedure as async

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Date:	Sat, 25 Jan 2014 15:54:29 +0100 (CET)
From:	Jan Engelhardt <jengelh@...i.de>
To:	Rusty Russell <rusty@...tcorp.com.au>
cc:	Lucas De Marchi <lucas.de.marchi@...il.com>,
	Peter Chen <peter.chen@...escale.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/1] module: Make wait module's refcount to zero
 procedure as async


On Monday 2013-09-16 05:47, Rusty Russell wrote:
>
>Here's what I've got in my pending-rebases tree.
>
>@@ -842,6 +818,11 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user,
> 		return -EFAULT;
> 	name[MODULE_NAME_LEN-1] = '\0';
> 
>+	if (!(flags & O_NONBLOCK)) {
>+		printk(KERN_WARNING
>+		       "waiting module removal not supported: please upgrade");
>+	}
>+

This patch has come to my attention via the opensuse lists, where
a poster reported about this new user-visible message (it appears
in dmesg!) and rightfully asked: upgrade what component?

It's probably the userspace module loading utility, but it _really_
should say so. There's good room to read that message - a few months
into the future - as "upgrade your kernel" instead ;)
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