linux-kernel - Re: [RFC PATCH v3 1/4] block: add a flag to identify PM request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 23 May 2012 11:02:39 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Lin Ming <ming.m.lin@...el.com>
cc:	Jens Axboe <axboe@...nel.dk>, <linux-kernel@...r.kernel.org>,
	<linux-pm@...r.kernel.org>, <linux-scsi@...r.kernel.org>
Subject: Re: [RFC PATCH v3 1/4] block: add a flag to identify PM request

On Tue, 22 May 2012, Lin Ming wrote:

> Add a flag REQ_PM to identify the request is PM related.
> As an example, modify scsi code to use this flag.

Don't forget to check up on the SCSI error handler.  If I'm not
mistaken, the libata drivers use it during suspend and resume.  Also,
the error handler will run if one of the REQ_PM commands encounters an
error.

Therefore it seems likely that every request submitted by the error 
handler needs to have REQ_PM set.

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/