From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 01/45] Create a dynamically sized pool of threads for
 doing very slow work items [ver #41]
Date: Fri, 21 Nov 2008 00:09:13 -0800
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On Thu, 20 Nov 2008 14:41:45 +0000 David Howells <dhowells@redhat.com> wrote:

> Create a dynamically sized pool of threads for doing very slow work items, such
> as invoking mkdir() or rmdir() - things that may take a long time and may
> sleep, holding mutexes/semaphores and hogging a thread, and are thus unsuitable
> for workqueues.

umm, if they're slow, why not create a kernel thread per operation? 
Why add the thread pool?