Re: [PATCH] mmtom: Prevent shrinking of active anon lru list in caseof no swap space V3

From: Rik van Riel
Date: Thu May 14 2009 - 13:26:38 EST

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Andrew Morton wrote:

On Thu, 14 May 2009 23:15:55 +0900
MinChan Kim <minchan.kim@xxxxxxxxx> wrote:

Now shrink_zone can deactivate active anon pages even if we don't have a swap device. Many embedded products don't have a swap device. So the deactivation of anon pages is unnecessary.

Does shrink_list() need to scan the anon LRUs at all if there's no swap
online?

It doesn't. Get_scan_ratio() will return 0 as the
anon percentage if no swap is online.
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