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Re: patch for 2.1.102 swap code

To: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>
Subject: Re: patch for 2.1.102 swap code
From: Rik van Riel <H.H.vanRiel@phys.uu.nl>
Date: Tue, 26 May 1998 23:46:35 +0200 (MET DST)
cc: Bill Hawes <whawes@star.net>, Linux Kernel List <linux-kernel@vger.rutgers.edu>, linux-mm@kvack.org
In-Reply-To: <199805262138.WAA02811@dax.dcs.ed.ac.uk>
Reply-To: Rik van Riel <H.H.vanRiel@phys.uu.nl>
Sender: owner-linux-mm@kvack.org

On Tue, 26 May 1998, Stephen C. Tweedie wrote:

> That's why read_swap_cache_async repeats the initial entry lookup after
> calling __get_free_page().  Unfortunately, I hadn't realised that
> swap_duplicate() had the error check against swap_map[entry]==0.  Moving
> the swap_duplicate up to before the call to __get_free_page should avoid
> that case.

Hmm, could read_swap_cache_async() be used to implement swap
readahead?

Rik.
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References:
- Re: patch for 2.1.102 swap code
  - From: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>

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