On 06/19/2012 09:49 AM, Minchan Kim wrote:
Hi everybody! Recently, there are some efforts to handle system memory pressure. 1) low memory notification - [1] 2) fallocate(VOLATILE) - [2] 3) fadvise(NOREUSE) - [3] For them, I would like to add new LRU list, aka "Ereclaimable" which is opposite of "unevictable". Reclaimable LRU list includes_easy_ reclaimable pages. For example, easy reclaimable pages are following as. 1. invalidated but remained LRU list. 2. pageout pages for reclaim(PG_reclaim pages) 3. fadvise(NOREUSE) 4. fallocate(VOLATILE) Their pages shouldn't stir normal LRU list and compaction might not migrate them, even.
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