Re: [PATCH V2 2/3] drivers/staging: zcache: host services and PAMservices

[Nitin Gupta]

On 02/09/2011 11:39 AM, Dan Magenheimer wrote:
> > From: Minchan Kim [mailto:minchan.kim@xxxxxxxxx]
>
> > As I read your comment, I can't find the benefit of zram compared to
> > frontswap.
>
> Well, I am biased, but I agree that frontswap is a better technical
> solution than zram. ;-)  But "dynamic-ity" is very important to
> me and may be less important to others.


I agree that frontswap is better than zram when considering swap as the 
use case - no bio overhead, dynamic resizing. However, zram being a 
*generic* block-device has some unique cases too like hosting files on 
/tmp, various caches under /var or any place where a compressed 
in-memory block device can help.

So, frontswap and zram have overlapping use case of swap but are not the 
same.

Thanks,
Nitin
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