linux-kernel - Re: [PATCH RESEND 2/3 v2.6.39-rc7] block: make disk_block_events() properly wait for work cancellation

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Date:	Tue, 17 May 2011 15:40:11 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jens Axboe <axboe@...nel.dk>, Sitsofe Wheeler <sitsofe@...oo.com>,
	Borislav Petkov <bp@...en8.de>, Meelis Roos <mroos@...ux.ee>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND 2/3 v2.6.39-rc7] block: make disk_block_events()
 properly wait for work cancellation

On Tue, May 17, 2011 at 8:27 AM, Tejun Heo <tj@...nel.org> wrote:
>
> Spinlock inside mutex seemed a bit strange but yeah that probably is
> the simpliest way.

Do you really even need the spinlock at all?

Just make the semaphore protect the count - and you're done.

                Linus
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