On Fri, Jun 19, 2020 at 01:41:39PM -0700, Rick Lindsley wrote: > On 6/19/20 8:38 AM, Tejun Heo wrote: > > > I don't have strong objections to the series but the rationales don't seem > > particularly strong. It's solving a suspected problem but only half way. It > > isn't clear whether this can be the long term solution for the problem > > machine and whether it will benefit anyone else in a meaningful way either. > > I don't understand your statement about solving the problem halfway. Could > you elaborate? Spending 5 minutes during boot creating sysfs objects doesn't seem like a particularly good solution and I don't know whether anyone else would experience similar issues. Again, not necessarily against improving the scalability of kernfs code but the use case seems a bit out there. > > I think Greg already asked this but how are the 100,000+ memory objects > > used? Is that justified in the first place? > > They are used for hotplugging and partitioning memory. The size of the > segments (and thus the number of them) is dictated by the underlying > hardware. This sounds so bad. There gotta be a better interface for that, right? Thanks. -- tejun
