Re: [PATCH v2 0/6] kernfs: proposed locking and concurrency improvement

From: Rick Lindsley
Date: Fri Jun 19 2020 - 16:41:59 EST


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?

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.

Rick