On Fri, May 11, 2012 at 6:27 PM, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > On Fri, May 11, 2012 at 2:01 AM, Minchan Kim <minchan@xxxxxxxxxx> wrote: >> >> I didn't have a time so made quick patch to show just concept. >> Not tested and Not consider carefully. >> If anyone doesn't oppose, I will send formal patch which will have more beauty code. > > What's so magical about that '8' *anyway*? We do we have that minimum at all? > > At the very least, the 8-vs-0 thing needs to be explained. The '0' acts as an "off" switch. Once it's on, we reserve 1/x of the pages for the pagelists. I'm not sure why 8 was selected in the first place, but I guess it made sense that you don't want to reserve 15%+ of your memory for the pagelists. -- 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=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>