> From: Seth Jennings [mailto:sjenning@xxxxxxxxxxxxxxxxxx] > Subject: Re: [RFC] mm: add support for zsmalloc and zcache > > On 09/24/2012 02:17 PM, Dan Magenheimer wrote: > >> From: Seth Jennings [mailto:sjenning@xxxxxxxxxxxxxxxxxx] > >> Subject: Re: [RFC] mm: add support for zsmalloc and zcache > > > > Once again, you have completely ignored a reasonable > > compromise proposal. Why? > > We have users who are interested in zcache and we had hoped for a path > that didn't introduce an additional 6-12 month delay. I am talking > with our team to determine a compromise that resolves this, but also > gets this feature into the hands of users that they can work with. > I'll be away from email until next week, but I wanted to get something > out to the mailing list before I left. I need a couple days to give a > more definite answer. Hi Seth -- James Bottomley's estimate of the additional 6-12 month addition to the acceptance cycle was (quote) "every time I've seen a rewrite done". Especially with zsmalloc available as an option in zcache2 (see separately-posted patch), zcache2 is _really_ _not_ a rewrite, certainly not for frontswap-centric workloads, which is I think where your efforts have always been focused (and, I assume, your future users). I suspect if you walk through the code paths in zcache2+zsmalloc, you'll find they are nearly identical to zcache1, other than some very minor cleanups, and some changes where Mel gave some feedback which would need to be cleaned up in zcache1 before promotion anyway (and happen to already have been cleaned up in zcache2). The more invasive design changes are all on the zbud paths. Of course, I'm of the opinion that neither zcache1 nor zcache2 would be likely to be promoted for at least another cycle or two, so if you go with zcache2+zsmalloc as the compromise and it still takes six months for promotion, I hope you don't blame that on the "rewrite". ;-) Anyway, looking forward (hopefully) to working with you on a good compromise. It would be nice to get back to coding and working together on a single path forward for zcache as there is a lot of work to do! Have a great weekend! Dan -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href