Re: 2.6.20 OOM with 8Gb RAM

From: William Lee Irwin III
Date: Fri Apr 13 2007 - 18:54:46 EST


On Fri, Apr 13, 2007 at 03:46:53PM -0700, Andrew Morton wrote:
> It's just weird - it exploits internal knowledge of VFS behaviour, diddles
> with pagecache within a fake disk strategy handler, etc.
> Furthermore, because it pretends to be a block device, the VFS will not use
> highmem pages when accessing the ramdisk. So the 8GB machine will go splat
> with only 800MB of ramdisk.
> ramfs is much cleaner and does not have that limitation.

After all this time, bdevs are still lowmem etc. Crying shame.


-- wli
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