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Date: Wed, 9 Oct 2024 11:28:28 +0200
From: Christoph Hellwig <hch@lst.de>
To: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>,
	Javier =?iso-8859-1?Q?Gonz=E1lez?= <javier.gonz@samsung.com>,
	Jens Axboe <axboe@kernel.dk>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	Kanchan Joshi <joshi.k@samsung.com>, hare@suse.de, sagi@grimberg.me,
	brauner@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz,
	jaegeuk@kernel.org, bcrl@kvack.org, dhowells@redhat.com,
	bvanassche@acm.org, asml.silence@gmail.com,
	linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	io-uring@vger.kernel.org, linux-block@vger.kernel.org,
	linux-aio@kvack.org, gost.dev@samsung.com, vishak.g@samsung.com
Subject: Re: [PATCH v7 0/3] FDP and per-io hints
Message-ID: <20241009092828.GA18118@lst.de>
References: <c68fef87-288a-42c7-9185-8ac173962838@kernel.dk> <CGME20241004053129eucas1p2aa4888a11a20a1a6287e7a32bbf3316b@eucas1p2.samsung.com> <20241004053121.GB14265@lst.de> <20241004061811.hxhzj4n2juqaws7d@ArmHalley.local> <20241004062733.GB14876@lst.de> <20241004065233.oc5gqcq3lyaxzjhz@ArmHalley.local> <20241004123027.GA19168@lst.de> <20241007101011.boufh3tipewgvuao@ArmHalley.local> <20241008122535.GA29639@lst.de> <ZwVFTHMjrI4MaPtj@kbusch-mbp>
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On Tue, Oct 08, 2024 at 08:44:28AM -0600, Keith Busch wrote:
> Then let's just continue with patches 1 and 2. They introduce no new
> user or kernel APIs, and people have already reported improvements using
> it.

They are still not any way actually exposing the FDP functionality
in the standard though.  How is your application going to align
anything to the reclaim unit?  Or is this another of the cases where
as a hyperscaler you just "know" from the data sheet?

But also given that the submitter completely disappeared and refuses
to even discuss his patches I thing they are simply abandonware at
this point anyway.