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From: Ed Tomlinson <tomlins@cam.org>
Subject: Re: [patch 11/21] disable interrupts while holding pagemap_lru_lock
To: linux-kernel@vger.kernel.org
Reply-To: tomlins@cam.org
Date: Sun, 11 Aug 2002 07:26:52 -0400
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Andrew Morton wrote:

> This optimisation is not needed on uniprocessor, but the patch disables
> IRQs while holding pagemap_lru_lock anyway, so it becomes an irq-safe
> spinlock, and pages can be moved from the LRU in interrupt context.

It does cleanup slablru in UP.  It simplifies the patch getting rid of the 
#ifdef when adding page(s) to the slab caches.  It also cleans up the code 
used when we want to remove a slab from a cache.

Thanks
Ed Tomlinson

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