From: Mike Christie <michaelc@cs.wisc.edu>
To: Tomas Henzl <thenzl@redhat.com>
Cc: "'linux-scsi@vger.kernel.org'" <linux-scsi@vger.kernel.org>,
Stanislaw Gruszka <sgruszka@redhat.com>
Subject: Re: [RFC] How to fix an async scan - rmmod race?
Date: Thu, 05 Apr 2012 11:05:34 -0500 [thread overview]
Message-ID: <4F7DC2CE.3040608@cs.wisc.edu> (raw)
In-Reply-To: <4F7DC0D2.6070301@cs.wisc.edu>
On 04/05/2012 10:57 AM, Mike Christie wrote:
> The only problem I could think of is if the scan_finished times out,
> then do_scsi_scan_host will return and do_scan_async will call
> scsi_finish_async_scan and scsi_remove_host will continue to run.
> However, if scsi_scan.c was still running something like the sequential
> scan/report luns scanning code or if the scsi eh was running and that is
Ignore the eh comment. The ehhandler is stopped in scsi_host_dev_release.
> what caused the scan_finished to timeout then that could be accessing
> the scsi_host_template and other structs.
>
> I did not look at all the scan_finished callouts to see what they do.
I looked at the iscsi and fc classes and they should be ok.
next prev parent reply other threads:[~2012-04-05 16:05 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-05 13:58 [RFC] How to fix an async scan - rmmod race? Tomas Henzl
2012-04-05 15:57 ` Mike Christie
2012-04-05 16:05 ` Mike Christie [this message]
2012-04-05 18:00 ` Bart Van Assche
2012-04-05 21:29 ` Mike Christie
2012-04-06 9:24 ` Bart Van Assche
2012-04-06 17:22 ` Mike Christie
2012-04-06 18:37 ` Bart Van Assche
2012-04-11 21:46 ` Mike Christie
2012-04-06 9:54 ` Tomas Henzl
2012-04-06 15:20 ` James Bottomley
2012-04-06 16:15 ` Bart Van Assche
2012-04-06 16:35 ` James Bottomley
2012-04-06 17:01 ` Bart Van Assche
2012-04-06 17:15 ` James Bottomley
2012-04-06 17:59 ` Bart Van Assche
2012-04-08 17:38 ` Bart Van Assche
2012-04-11 18:17 ` Mike Christie
2012-04-11 18:30 ` Mike Christie
2012-04-11 19:47 ` Bart Van Assche
2012-04-11 22:28 ` Mike Christie
2012-04-12 10:48 ` Bart Van Assche
2012-04-06 9:39 ` Bart Van Assche
2012-04-06 10:14 ` Tomas Henzl
2012-04-06 13:13 ` Tomas Henzl
2012-04-06 14:38 ` Bart Van Assche
2012-04-06 15:32 ` Tomas Henzl
2012-04-12 12:48 ` [RFC] How to fix an async scan - rmmod race? try_module_get Tomas Henzl
2012-04-18 16:48 ` [RFC] How to fix an async scan - 'rmmod --wait' race? Tomas Henzl
2012-04-18 18:18 ` Bart Van Assche
2012-05-17 8:42 ` James Bottomley
2012-05-17 8:55 ` Bart Van Assche
2012-05-17 9:01 ` James Bottomley
2012-05-17 14:51 ` Tomas Henzl
2012-05-22 10:05 ` James Bottomley
2012-05-25 15:13 ` Tomas Henzl
2012-05-25 18:46 ` Dan Williams
2012-05-28 11:58 ` Tomas Henzl
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