Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits

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On 10/30/24 10:14 AM, Christoph Hellwig wrote:
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?

I do not know whether there are any Android apps that use the
F_SET_(FILE_|)RW_HINT fcntls.

The only use case in Android platform code I know of is this one: Daejun
Park, "f2fs-tools: add write hint support", f2fs-dev mailing list,
September 2024 (https://lore.kernel.org/all/20240904011217epcms2p5a1b15db8e0ae50884429da7be4af4de4@epcms2p5/T/).
As you probably know f2fs-tools is a software package that includes
fsck.f2fs.

Jaegeuk, please correct me if necessary.

Bart.







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