On Mon 16-07-18 11:09:01, Michal Hocko wrote: > On Fri 13-07-18 10:36:14, Dave Chinner wrote: > [...] > > By limiting the number of negative dentries in this case, internal > > slab fragmentation is reduced such that reclaim cost never gets out > > of control. While it appears to "fix" the symptoms, it doesn't > > address the underlying problem. It is a partial solution at best but > > at worst it's another opaque knob that nobody knows how or when to > > tune. > > Would it help to put all the negative dentries into its own slab cache? We couldn't http://lkml.kernel.org/r/20180714173516.uumlhs4wgfgrlc32@devuan Sorry I haven't noticed the other line of discussion -- Michal Hocko SUSE Labs
