linux-kernel - Re: [PATCH] fs: run emergency remount on dedicated workqueue

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Message-ID: <4C05A23F.90803@kernel.org>
Date:	Wed, 02 Jun 2010 02:13:51 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>, davem@...emloft.net,
	jens.axboe@...cle.com, linux-kernel@...r.kernel.org,
	viro@...IV.linux.org.uk, Nick Piggin <nickpiggin@...oo.com.au>
Subject: Re: [PATCH] fs: run emergency remount on dedicated workqueue

Hello,

On 06/02/2010 01:57 AM, Linus Torvalds wrote:
> On Tue, 1 Jun 2010, Andrew Morton wrote:
>>
>> Please, always quote the patch title rather than a bare commit ID.  The
>> usual form is
>>
>>     fa4b9074cd8428958c2adf9dc0c831f46e27c193 ("buffer: make
>>     invalidate_bdev() drain all percpu LRU add caches:)
>>
>> The main reason for this is so that people can more reliably and simply
>> identify the patch within a different tree.  I think.
> 
> Absolutely. Also, I think it's usually more readable to quote just the 
> first 12 hex digits of the SHA1 - that's still going to be perfectly 
> unique in any practical situation, and makes it way easier to flow the 
> text to be readable.

Alright, will do so from now on.

>> gaah.  Do we really want to add Yet Another Kernel Thread just for that
>> dopey sysrq-U thing?
> 
> I do have to agree that it's disgusting. Can't we use an existing thread 
> (slow-work?) or something like that?

The dedicated workqueue can go away with cmwq.  As it's a temporary
measure until then, I wanted to keep it simple.  Would it be okay if I
note that the dedicated workqueue will go away soonish in the patch
description and comment?

Thanks.

-- 
tejun
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