On Fri, Nov 13, 2020 at 09:27:22AM +0800, Ming Lei wrote: > >From a519f421957a1205918e9bcc15087d15234e4e9f Mon Sep 17 00:00:00 2001 > From: Ming Lei <ming.lei@xxxxxxxxxx> > Date: Thu, 12 Nov 2020 09:56:02 +0800 > Subject: [PATCH V2 3/3] Revert "block: Fix a lockdep complaint triggered by > request queue flushing" > > This reverts commit b3c6a59975415bde29cfd76ff1ab008edbf614a9. > > Now we can avoid nvme-loop lockdep warning of 'lockdep possible recursive > locking' by nvme-loop's lock class, no need to apply dynamically > allocated lock class key, so revert commit b3c6a5997541("block: Fix a > lockdep complaint triggered by request queue flushing"). > > This way fixes horrible SCSI probe delay issue on megaraid_sas(host_tagset is 1), > and it is reported the whole probe may take more than half an hour. The reason There are a bunch of overly long lines in the commit log. Otherwise this looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>