> From: Christoph Hellwig [mailto:hch@xxxxxxxxxxxxx] > Sent: Thursday, October 27, 2011 3:12 PM > To: David Rientjes > Cc: Dan Magenheimer; Linus Torvalds; linux-mm@xxxxxxxxx; LKML; Andrew Morton; Konrad Wilk; Jeremy > Fitzhardinge; Seth Jennings; ngupta@xxxxxxxxxx; levinsasha928@xxxxxxxxx; Chris Mason; > JBeulich@xxxxxxxxxx; Dave Hansen; Jonathan Corbet; Neo Jia > Subject: Re: [GIT PULL] mm: frontswap (for 3.2 window) > > On Thu, Oct 27, 2011 at 01:18:40PM -0700, David Rientjes wrote: > > Isn't this something that should go through the -mm tree? > > It should have. It should also have ACKs from the core VM developers, > and at least the few I talked to about it really didn't seem to like it. Yes, it would have been nice to have it go through the -mm tree. But, *sigh*, I guess it will be up to Linus again to decide if "didn't seem to like it" is sufficient to block functionality that has found use by a number of in-kernel users and by real shipping products... and continues to grow in usefulness. If Linux truly subscribes to the "code rules" mantra, no core VM developer has proposed anything -- even a design, let alone working code -- that comes close to providing the functionality and flexibility that frontswap (and cleancache) provides, and frontswap provides it with a very VERY small impact on existing kernel code AND has been posted and working for 2+ years. (And during that 2+ years, excellent feedback has improved the "kernel-ness" of the code, but NONE of the core frontswap design/hooks have changed... because frontswap _just works_!) Perhaps other frontswap users would be so kind as to reply on this thread with their opinions... 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href