> >> + of the root memcg, regardless of their positioning in the tree. >> + >> + Use of flat hierarchies is highly discouraged, but has been the >> + default for performance reasons for quite some time. Setting this flag >> + to on will make hierarchical accounting the default. It is still >> + possible to set it back to flat by writing 0 to the file >> + memory.use_hierarchy, albeit discouraged. Distributors are encouraged >> + to set this option. > [...] > > I don't think that 'default n' is effective encouragement! > > Ben. > If it were up to me, I would just flip it to 1. No option. A bit of history here, is that people have a - quite valid - concern that this will disrupt users using their own kernel, should they decide to update, recompile and run. Conditional on a Kconfig option, people reusing their .config will see no change. Distros, otoh, are versioned. It is not unreasonable to expect a behavior change when a major version flips. The encouragement here comes not from the default, but from the acknowledgment that his thing is totally broken, and we need to act to fix it in a compatible way. -- 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=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>