linux-kernel - Re: [PATCH v2 1/1] scsi: core: Fix error handler encryption support

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Message-ID: <88900700-7f37-4c3e-878e-cf5f68f006cc@acm.org>
Date: Wed, 3 Dec 2025 05:55:06 -1000
From: Bart Van Assche <bvanassche@....org>
To: Hannes Reinecke <hare@...e.com>, Christoph Hellwig <hch@...radead.org>,
 Po-Wen Kao <powenkao@...gle.com>
Cc: "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 "open list:SCSI SUBSYSTEM" <linux-scsi@...r.kernel.org>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/1] scsi: core: Fix error handler encryption support

On 12/2/25 10:42 PM, Hannes Reinecke wrote:
> There had been an intersection with the reserved command stuff, but
> now that Bart has dusted things off there I guess I should give it
> another go.

Does that patch series perhaps involve allocating a reserved command
from inside the SCSI error handler? Won't that break SCSI LLDs that
restrict the queue depth to one? I think that the following SCSI LLDs
only support one command (.can_queue = 1):
* drivers/scsi/fdomain.c
* drivers/scsi/mac53c94.c
* drivers/scsi/ppa.c
* drivers/scsi/imm.c
* drivers/scsi/aha152x.c

Thanks,

Bart.