linux-kernel - Re: [PATCH 1/3]: compressed RAM block device

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Date:	Fri, 20 Mar 2009 19:56:38 +0100
From:	Pavel Machek <pavel@....cz>
To:	Nitin Gupta <ngupta@...are.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3]: compressed RAM block device

On Tue 2009-03-17 17:06:46, Nitin Gupta wrote:
>  drivers/block/Kconfig     |   22 +
>  drivers/block/Makefile    |    1 +
>  drivers/block/compcache.c |  995 +++++++++++++++++++++++++++++++++++++++++++++
>  drivers/block/compcache.h |  160 ++++++++
>  4 files changed, 1178 insertions(+), 0 deletions(-)
>
> Creates RAM based block device (ramzswap0) which can be used as swap device.
> Pages swapped to this are compressed and stored in memory itself.
>
> The module is called compcache.ko. It depends on:
>  - xvmalloc.ko: memory allocator
>  - lzo_compress.ko
>  - lzo_decompress.ko
>
> See Documentation/blockdev/compcache.txt for usage details.
>
> Project home: http://code.google.com/p/compcache/


Compcache is really bad name for this. zramdisk? gzrd?

Is the block device useful for general filesystem storage?

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