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Date:   Wed, 1 Jul 2020 14:13:44 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     kernel test robot <rong.a.chen@intel.com>
Cc:     Christoph Hellwig <hch@lst.de>, Al Viro <viro@zeniv.linux.org.uk>,
        Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [fs] 140402bab8: stress-ng.splice.ops_per_sec -100.0%
 regression
Message-ID: <20200701121344.GA14149@lst.de>
References: <20200624161335.1810359-14-hch@lst.de> <20200701091943.GC3874@shao2-debian>
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FYI, this is because stress-nh tests splice using /dev/null.  Which
happens to actually have the iter ops, but doesn't have explicit
splice_read operation.