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Date: Mon, 11 Nov 2024 07:51:48 +0100
From: Christoph Hellwig <hch@lst.de>
To: Javier Gonzalez <javier.gonz@samsung.com>
Cc: Matthew Wilcox <willy@infradead.org>, Keith Busch <kbusch@kernel.org>,
	Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@meta.com>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
	"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
	"io-uring@vger.kernel.org" <io-uring@vger.kernel.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"joshi.k@samsung.com" <joshi.k@samsung.com>,
	"bvanassche@acm.org" <bvanassche@acm.org>
Subject: Re: [PATCHv10 0/9] write hints with nvme fdp, scsi streams
Message-ID: <20241111065148.GC24107@lst.de>
References: <20241029151922.459139-1-kbusch@meta.com> <20241105155014.GA7310@lst.de> <Zy0k06wK0ymPm4BV@kbusch-mbp> <20241108141852.GA6578@lst.de> <Zy4zgwYKB1f6McTH@kbusch-mbp> <CGME20241108165444eucas1p183f631e2710142fbbc7dee9300baf77a@eucas1p1.samsung.com> <Zy5CSgNJtgUgBH3H@casper.infradead.org> <d7b7a759dd9a45a7845e95e693ec29d7@CAMSVWEXC02.scsc.local>
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On Fri, Nov 08, 2024 at 05:43:44PM +0000, Javier Gonzalez wrote:
> We have been iterating in the patches for years, but it is unfortunately
> one of these series that go in circles forever. I don't think it is due
> to any specific problem, but mostly due to unaligned requests form
> different folks reviewing. Last time I talked to Damien he asked me to 
> send the patches again; we have not followed through due to bandwidth.

A big problem is that it actually lacks a killer use case.  If you'd
actually manage to plug it into an in-kernel user and show a real
speedup people might actually be interested in it and help optimizing
for it.