linux-kernel - Re: [PATCH 05/16] scsi: libsas: Add struct sas_tmf

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Message-ID: <Ye/9Fs+JrtlMC+Mb@casper.infradead.org>
Date:   Tue, 25 Jan 2022 13:37:26 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     John Garry <john.garry@...wei.com>
Cc:     jejb@...ux.ibm.com, martin.petersen@...cle.com,
        artur.paszkiewicz@...el.com, jinpu.wang@...ud.ionos.com,
        chenxiang66@...ilicon.com, Ajish.Koshy@...rochip.com,
        yanaijie@...wei.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
        linuxarm@...wei.com, liuqi115@...wei.com, Viswas.G@...rochip.com,
        damien.lemoal@...nsource.wdc.com
Subject: Re: [PATCH 05/16] scsi: libsas: Add struct sas_tmf_task

On Tue, Jan 25, 2022 at 07:32:41PM +0800, John Garry wrote:
> Some of the LLDDs which use libsas have their own definition of a struct
> to hold TMF info, so add a common struct for libsas.
> 
> Also add an interim force phy id field for hisi_sas driver, which will be
> removed once the STP "TMF" code is factored out.
> 
> Even though some LLDDs (pm8001) use a u32 for the tag, u16 should be
> enough.

... because pm8001 limits the number of tags to 1024.