Messages in this thread | | | Date | Tue, 10 Jan 2023 07:49:00 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH 1/4] blkcg: Drop unnecessary RCU read [un]locks from blkg_conf_prep/finish() |
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On Mon, Jan 09, 2023 at 10:48:55AM -1000, Tejun Heo wrote: > Now that all RCU flavors have been combined, holding a spin lock, disabling > irq, disabling preemption all imply RCU read lock.
Can you write it like this in the commit log, please?
> I can drop the changes but this actually bothers me. The annotation has been > broken for a *long* time and nobody noticed. Furthermore, I can't remember a > time when __acquires/__releases notation caught anything that lockdep > couldn't trivially and can't even think of a way how it could. AFAICS, these > annotations don't contribute anything other than preservation of themselves. > I don't see why we would want to keep them.
People have noticed it. It just hasn't been a priority as there are lots of even more problematic things.
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