From: James Bottomley <James.Bottomley@SteelEye.com>
To: Mark Lord <lkml@rtr.ca>
Cc: Christoph Hellwig <hch@infradead.org>,
Jeff Garzik <jgarzik@pobox.com>, Mark Lord <lsml@rtr.ca>,
Linux Kernel <linux-kernel@vger.kernel.org>,
SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH] QStor SATA/RAID driver for 2.6.9-rc3
Date: 08 Oct 2004 10:47:40 -0500 [thread overview]
Message-ID: <1097250465.2412.49.camel@mulgrave> (raw)
In-Reply-To: <4166B48E.3020006@rtr.ca>
On Fri, 2004-10-08 at 10:38, Mark Lord wrote:
> Can deadlock occur here, since qstor.c is already using schedule_work()
> as part of it's internal bottom-half handling for abnormal conditions?
>
> Eg. hotplug event -> schedule_work -> mid-layer -> queuecommand
> --> sleep :: interrupt -> schedule_work -> deadlock?
>
Since you wouldn't go straight from schedule_work->mid-layer, I assume
you mean that when the workqueue thread runs the work?
With that assumption, this is legal and won't deadlock.
However, I assume you know you can't sleep in queuecommand since it may
be run from the scsi tasklet?
James
next prev parent reply other threads:[~2004-10-08 15:47 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-04 19:11 [PATCH] QStor SATA/RAID driver for 2.6.9-rc3 Mark Lord
2004-10-07 13:42 ` Mark Lord
2004-10-07 14:07 ` Christoph Hellwig
2004-10-07 15:35 ` Mark Lord
2004-10-07 15:50 ` Jeff Garzik
2004-10-07 20:17 ` Mark Lord
2004-10-07 20:30 ` Jeff Garzik
2004-10-07 20:34 ` Mark Lord
2004-10-07 20:46 ` Jeff Garzik
2004-10-07 20:54 ` Mark Lord
2004-10-07 21:15 ` Christoph Hellwig
2004-10-07 22:03 ` Mark Lord
2004-10-20 15:44 ` Christoph Hellwig
2004-10-07 23:39 ` PATCH] " Mark Lord
2004-10-13 18:56 ` [PATCH] QStor SATA/RAID driver for 2.6.9-rc4 Mark Lord
2004-10-08 13:19 ` [PATCH] QStor SATA/RAID driver for 2.6.9-rc3 James Bottomley
2004-10-08 15:15 ` Mark Lord
2004-10-08 15:27 ` James Bottomley
2004-10-08 15:34 ` Mark Lord
2004-10-08 15:38 ` Jeff Garzik
2004-10-08 16:01 ` James Bottomley
2004-10-12 17:00 ` Mark Lord
2004-10-12 17:05 ` Jeff Garzik
2004-10-12 17:09 ` James Bottomley
2004-10-12 17:31 ` Jeff Garzik
2004-10-08 15:38 ` Mark Lord
2004-10-08 15:47 ` James Bottomley [this message]
2004-10-08 15:49 ` Jeff Garzik
2004-10-12 16:59 ` Mark Lord
2004-10-12 17:03 ` Jeff Garzik
2004-10-12 17:14 ` Mark Lord
2004-10-12 17:19 ` Jeff Garzik
2004-10-12 17:23 ` Jeff Garzik
2004-10-12 17:17 ` James Bottomley
2004-10-12 17:22 ` Mark Lord
2004-10-12 17:30 ` James Bottomley
2004-10-12 17:33 ` Mark Lord
2004-10-12 17:42 ` Jeff Garzik
2004-10-12 17:51 ` Mark Lord
2004-10-12 18:12 ` James Bottomley
2004-10-12 18:36 ` Mark Lord
2004-10-12 18:25 ` driver hacking tips (was Re: [PATCH] QStor SATA/RAID driver for 2.6.9-rc3) Jeff Garzik
2004-10-12 19:18 ` Mark Lord
2004-10-12 19:40 ` Jeff Garzik
2004-10-12 17:34 ` [PATCH] QStor SATA/RAID driver for 2.6.9-rc3 Jeff Garzik
2004-10-07 20:31 ` Christoph Hellwig
2004-10-07 20:35 ` Jeff Garzik
2004-10-07 21:16 ` Mark Lord
2004-10-07 21:44 ` Jeff Garzik
2004-10-07 21:45 ` Jeff Garzik
2004-10-13 20:04 ` Jeff Garzik
2004-10-13 22:16 ` Mark Lord
2004-10-13 22:41 ` Jeff Garzik
2004-10-13 23:24 ` Mark Lord
2004-10-13 23:39 ` Jeff Garzik
2004-10-14 16:30 ` Mark Lord
2004-10-14 16:37 ` Mark Lord
2004-10-14 16:52 ` [PATCH] Export ata_scsi_simulate() for use by non-libata drivers Mark Lord
2004-10-14 17:04 ` Jeff Garzik
2004-10-14 18:44 ` Mark Lord
2004-10-15 5:04 ` Jeff Garzik
2004-10-15 13:25 ` John W. Linville
2004-10-15 14:59 ` Randy.Dunlap
2004-10-15 15:38 ` Jeff Garzik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1097250465.2412.49.camel@mulgrave \
--to=james.bottomley@steeleye.com \
--cc=hch@infradead.org \
--cc=jgarzik@pobox.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=lkml@rtr.ca \
--cc=lsml@rtr.ca \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.