On Tue, 23 Jan 2007 16:49:55 -0800 (PST)
Christoph Lameter <[email protected]> wrote:
> If we enter reclaim and the number of page cache pages
> is too high then we switch off swapping during reclaim
> to avoid touching anonymous pages.
In general, I like this (kind of) feature.
> + /*
> + * If the page cache is too big then focus on page cache
> + * and ignore anonymous pages
> + */
> + if (sc->may_swap && zone_page_state(zone, NR_FILE_PAGES)
> + > zone->max_pagecache_pages)
> + sc->may_swap = 0;
> +
How about adding this (kind of) check ?
if (sc->may_swap &&
zone_page_state(zone, NR_FILE_PAGES) &&
!(curreht->flags & PF_MEMALLOC))
sc->may_swap = 0;
-Kame
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