From: Andrew Morton <akpm@osdl.org>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: pavel@ucw.cz, linux-kernel@vger.kernel.org
Subject: Re: More cleanups for swsusp
Date: Tue, 20 Jan 2004 21:30:37 -0800 [thread overview]
Message-ID: <20040120213037.66c9d5a0.akpm@osdl.org> (raw)
In-Reply-To: <20040121051855.B0C282C0A7@lists.samba.org>
Rusty Russell <rusty@rustcorp.com.au> wrote:
>
> In message <20040120225219.GA19190@elf.ucw.cz> you write:
> > - if (fill_suspend_header(&cur->sh))
> > - panic("\nOut of memory while writing header");
> > + BUG_ON (fill_suspend_header(&cur->sh));
>
> ...
> 3) BUG_ON(complex condition expression) is much less clear than:
>
> if (complex condition expression)
> BUG();
Worse. If some smarty goes and makes BUG_ON a no-op (for space reasons),
it will break software suspend. We should ensure that the expression which
is supplied to BUG_ON() never has side-effects for this reason.
I'll drop that chunk.
next prev parent reply other threads:[~2004-01-21 5:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-20 22:52 Pavel Machek
2004-01-20 23:13 ` Andrew Morton
2004-01-20 23:25 ` Pavel Machek
2004-01-21 5:10 ` Rusty Russell
2004-01-22 0:17 ` Pavel Machek
2004-01-21 5:14 ` Rusty Russell
2004-01-21 5:30 ` Andrew Morton [this message]
2004-01-21 18:39 ` Matt Mackall
2004-01-22 2:03 ` Rusty Russell
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