linux-kernel - Re: [PATCH v3 0/3] Untie the host lock entanglement

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Message-ID: <yq1seskdmyu.fsf@ca-mkp.ca.oracle.com>
Date: Fri, 25 Oct 2024 15:03:47 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Avri Altman <avri.altman@....com>
Cc: "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bart Van
 Assche <bvanassche@....org>
Subject: Re: [PATCH v3 0/3] Untie the host lock entanglement - part 1


Avri,

> While trying to simplify the ufs core driver with the guard() macro
> [1], Bart made note of the abuse of the scsi host lock in the ufs
> driver. Indeed, the host lock is deeply entangled in various flows
> across the driver, as if it was some occasional default
> synchronization mean.
>
> Here is the first part of defusing it, remove some of those calls
> around host registers accesses, which needs no protection.
>
> Doing this in phases seems like a reasonable approach, given the
> myriad use of the host lock.

Applied to 6.13/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering