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Message-Id: <20101217154947.3e95488c.akpm@linux-foundation.org>
Date: Fri, 17 Dec 2010 15:49:47 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Baruch Siach <baruch@...s.co.il>
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] delay.h: add __must_check to msleep_interruptible
On Thu, 4 Nov 2010 10:55:41 +0200
Baruch Siach <baruch@...s.co.il> wrote:
> Code calling msleep_interruptible() must be aware that sleep time might be
> shorter than intended as a result of a signal being caught. Code not checking
> the return value of msleep_interruptible() is probably buggy, unless it's doing
> the signal_pending() check itself, which is redundant.
>
True. But there are around 250 callsites which don't check the
msleep_interruptible() return value.
I don't think I want to add 250 new warnings to the kernel build -
it'll take *years* to get them all weeded out and meanwhile it will
cause people to miss other warnings while they're ignoring the
msleep_interruptible() warnings.
So. Some lucky duck needs to get down and start fixing all these
things first, please. Meanwhile, a checkpatch rule which prevents new
occurrences would be good.
Except lots of developers and maintainers can't be assed running
checkpatch, so a volunteer who regularly runs linux-next.patch and
patch-2.6.Y-rcY through checkpatch and then hassles people would also be
good.
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