On Mon, Sep 22, 2008 at 8:52 AM, Rik van Riel <riel@xxxxxxxxxxx> wrote: > On Mon, 22 Sep 2008 07:54:01 +0900 > MinChan Kim <minchan.kim@xxxxxxxxx> wrote: > >> Do You mean current page reclaim mechanism have a problem ? >> As you know, kernel already have reclaimed fs-specific metadata. >> What is a problem? > > The problem is that that buffer heads are only reclaimed when > the pages in that memory zone are scanned. > > This does not help when you have 63GB of highmem and only > 1GB of lowmem - low memory will be full long before the VM > starts scanning high memory. Thanks for explaining, Rik. Just out of curiosity, I think when memory manager get the pressure, it will start scanning then it can reclaim metadata in low memory. What's wrong? > The solution is to not use a 32 bit kernel with 64GB of RAM :) > > -- > All rights reversed. > -- Kinds regards, MinChan Kim -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
