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From: David Howells <dhowells@redhat.com>
In-Reply-To: <20081121000913.6506d7b6.akpm@linux-foundation.org>
References: <20081121000913.6506d7b6.akpm@linux-foundation.org> <20081120144139.10667.75519.stgit@warthog.procyon.org.uk> <20081120144145.10667.39594.stgit@warthog.procyon.org.uk>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: dhowells@redhat.com, trond.myklebust@fys.uio.no, viro@ZenIV.linux.org.uk,
       nfsv4@linux-nfs.org, linux-kernel@vger.kernel.org,
       linux-fsdevel@vger.kernel.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 10:24:00 +0000
Message-ID: <18617.1227263040@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 576
Lines: 15

Andrew Morton <akpm@linux-foundation.org> wrote:

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

Because if someone does a tar of, say, a kernel tree, that'll create one
thread per file...  This provides a limiter - and makes sure there are threads
immediately available.

David
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