linux-kernel - Re: [PATCH v2 0/9] block: Consolidate scsi sense buffer usage

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Date:   Thu, 2 Aug 2018 15:24:47 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Kees Cook <keescook@...omium.org>
Cc:     Christoph Hellwig <hch@...radead.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        Tejun Heo <tj@...nel.org>, Borislav Petkov <bp@...en8.de>,
        "David S. Miller" <davem@...emloft.net>,
        "Manoj N. Kumar" <manoj@...ux.vnet.ibm.com>,
        "Matthew R. Ochs" <mrochs@...ux.vnet.ibm.com>,
        Uma Krishnan <ukrishn@...ux.vnet.ibm.com>,
        "Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Cyrille Pitchen <cyrille.pitchen@...e-electrons.com>,
        Juergen Gross <jgross@...e.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Sagar Dharia <sdharia@...eaurora.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Vinod Koul <vinod.koul@...el.com>,
        David Kershner <david.kershner@...sys.com>,
        linux-block@...r.kernel.org, linux-ide@...r.kernel.org,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/9] block: Consolidate scsi sense buffer usage

On 7/31/18 1:51 PM, Kees Cook wrote:
> This is a follow-up to commit f7068114d45e ("sr: pass down correctly
> sized SCSI sense buffer") which further cleans up and removes needless
> sense character array buffers and "struct request_sense" usage in favor
> of the common "struct scsi_sense_hdr".
> 
> First, drop a bunch of unused sense buffers:
>  [PATCH 1/9] ide-cd: Drop unused sense buffers
>  [PATCH 2/9] scsi: cxlflash: Drop unused sense buffers
> 
> Next, allow the sense buffer to be usable outside SCSI tree:
>  [PATCH 3/9] scsi: build scsi_common.o for all scsi passthrough request users
>  [PATCH 4/9] target: don't depend on SCSI
> 
> Then move all request_sense usage to scsi_sense_hdr:
>  [PATCH 5/9] block: Switch struct packet_command to use struct scsi_sense_hdr
> 
> And do some further cleanups for scsi_sense_hdr now that we can:
>  [PATCH 6/9] ide-cd: Remove redundant sense buffer
>  [PATCH 7/9] cdrom: Use struct scsi_sense_hdr internally
> 
> Finally add a build-time check to make sure we don't pass bad buffer sizes:
>  [PATCH 8/9] libata-scsi: Move sense buffers onto stack
>  [PATCH 9/9] scsi: Check sense buffer size at build time

Thanks Kees, applied for 4.19. Note that I hand applied patch #5 and #9,
since they did not apply directly to the block tree.

-- 
Jens Axboe