Messages in this thread | | | Date | Mon, 1 Jul 2019 12:27:56 +0200 | From | Michal Hocko <> | Subject | Re: [PATCH v3 10/11] mm/memory_hotplug: Make unregister_memory_block_under_nodes() never fail |
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On Mon 01-07-19 11:36:44, Oscar Salvador wrote: > On Mon, Jul 01, 2019 at 10:51:44AM +0200, Michal Hocko wrote: > > Yeah, we do not allow to offline multi zone (node) ranges so the current > > code seems to be over engineered. > > > > Anyway, I am wondering why do we have to strictly check for already > > removed nodes links. Is the sysfs code going to complain we we try to > > remove again? > > No, sysfs will silently "fail" if the symlink has already been removed. > At least that is what I saw last time I played with it. > > I guess the question is what if sysfs handling changes in the future > and starts dropping warnings when trying to remove a symlink is not there. > Maybe that is unlikely to happen?
And maybe we handle it then rather than have a static allocation that everybody with hotremove configured has to pay for. -- Michal Hocko SUSE Labs
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