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Date: Wed, 30 Oct 2024 18:14:50 +0100
From: Christoph Hellwig <hch@lst.de>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
	Keith Busch <kbusch@meta.com>, linux-block@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org,
	io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	joshi.k@samsung.com, javier.gonz@samsung.com,
	Hannes Reinecke <hare@suse.de>,
	"Martin K . Petersen" <martin.petersen@oracle.com>
Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits
Message-ID: <20241030171450.GA12580@lst.de>
References: <20241029151922.459139-1-kbusch@meta.com> <20241029151922.459139-10-kbusch@meta.com> <20241029152654.GC26431@lst.de> <ZyEAb-zgvBlzZiaQ@kbusch-mbp> <20241029153702.GA27545@lst.de> <ZyEBhOoDHKJs4EEY@kbusch-mbp> <20241029155330.GA27856@lst.de> <ZyEL4FOBMr4H8DGM@kbusch-mbp> <20241030045526.GA32385@lst.de> <c9c2574b-b3be-47ac-8a82-10d92c5892bc@acm.org>
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User-Agent: Mutt/1.5.17 (2007-11-01)

On Wed, Oct 30, 2024 at 09:59:24AM -0700, Bart Van Assche wrote:
>
> On 10/29/24 9:55 PM, Christoph Hellwig wrote:
>> For the temperature hints the only public user I known is rocksdb, and
>> that only started working when Hans fixed a brown paperbag bug in the
>> rocksdb code a while ago.  Given that f2fs interprets the hints I suspect
>> something in the Android world does as well, maybe Bart knows more.
>
> UFS devices typically have less internal memory (SRAM) than the size of a 
> single zone.

That wasn't quite the question.  Do you know what application in android
set the fcntl temperature hints?