From: Jeff Garzik <jgarzik@pobox.com>
To: Tejun Heo <htejun@gmail.com>
Cc: mlord@pobox.com, albertcc@tw.ibm.com, alan@lxorguk.ukuu.org.uk,
axboe@suse.de, forrest.zhao@intel.com, linux-ide@vger.kernel.org
Subject: Re: [PATCH 07/14] libata-hp-prep: store attached SCSI device
Date: Fri, 19 May 2006 11:04:43 -0400 [thread overview]
Message-ID: <446DDE8B.4000104@pobox.com> (raw)
In-Reply-To: <11480445842821-git-send-email-htejun@gmail.com>
Tejun Heo wrote:
> Add device persistent field dev->sdev and store the attached SCSI
> device. With hotplug, libata needs to know the attached SCSI device
> to offline and detach it, but scsi_device_lookup() cannot be used
> because libata will reuse SCSI ID numbers - dead but not gone devices
> (due to zombie opens, etc...) interfere with the lookup.
>
> dev->sdev doesn't hold reference to the SCSI device. It's cleared
> when the SCSI device goes away.
>
> Signed-off-by: Tejun Heo <htejun@gmail.com>
ACK, though begin to think about when SCSI simulation is made optional...
Jeff
next prev parent reply other threads:[~2006-05-19 15:04 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-19 13:16 [PATCHSET 01/03] prep for hotplug support, take 3 Tejun Heo
2006-05-19 13:16 ` [PATCH 03/14] libata-hp-prep: make some ata_device fields persistent Tejun Heo
2006-05-19 15:00 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 01/14] libata-hp-prep: add flags and eh_info/context fields for hotplug Tejun Heo
2006-05-19 14:58 ` Jeff Garzik
2006-05-19 15:17 ` Tejun Heo
2006-05-19 15:28 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 02/14] libata-hp-prep: implement ata_dev_init() Tejun Heo
2006-05-19 13:16 ` [PATCH 04/14] libata-hp-prep: update ata_scsi_find_dev() and friends Tejun Heo
2006-05-19 15:03 ` Jeff Garzik
2006-05-23 14:25 ` Tejun Heo
2006-05-26 7:07 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 05/14] libata-hp-prep: use __ata_scsi_find_dev() Tejun Heo
2006-05-19 13:16 ` [PATCH 09/14] libata-hp-prep: make probing related functions global Tejun Heo
2006-05-19 13:16 ` [PATCH 06/14] libata-hp-prep: implement ap->hw_sata_spd_limit Tejun Heo
2006-05-19 13:16 ` [PATCH 07/14] libata-hp-prep: store attached SCSI device Tejun Heo
2006-05-19 15:04 ` Jeff Garzik [this message]
2006-05-19 13:16 ` [PATCH 12/14] libata-hp-prep: implement ata_noop_check_status() Tejun Heo
2006-05-19 15:12 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 11/14] libata-hp-prep: make ops->tf_read() optional Tejun Heo
2006-05-19 15:11 ` Jeff Garzik
2006-05-23 16:04 ` Tejun Heo
2006-05-19 13:16 ` [PATCH 08/14] libata-hp-prep: add ata_hotplug_wq Tejun Heo
2006-05-19 13:16 ` [PATCH 14/14] libata-hp-prep: implement followup softreset handling Tejun Heo
2006-05-19 15:21 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 10/14] libata-hp-prep: implement sata_phy_debounce() Tejun Heo
2006-05-19 15:07 ` Jeff Garzik
2006-05-19 13:16 ` [PATCH 13/14] libata-hp-prep: add prereset() method and implement ata_std_prereset() Tejun Heo
2006-05-19 15:20 ` Jeff Garzik
2006-05-23 14:44 ` Tejun Heo
2006-05-23 22:29 ` Alan Cox
2006-05-29 2:14 ` Tejun Heo
-- strict thread matches above, loose matches on Subject: below --
2006-05-19 13:06 [PATCH 06/14] libata-hp-prep: implement ap->hw_sata_spd_limit Tejun Heo
2006-05-19 13:06 ` [PATCH 07/14] libata-hp-prep: store attached SCSI device Tejun Heo
2006-05-11 15:11 [PATCHSET 07/11] prep LLDDs for hotplug support, take 1 Tejun Heo
2006-05-11 15:11 ` [PATCH 07/14] libata-hp-prep: store attached SCSI device Tejun Heo
2006-05-11 15:02 [PATCHSET 06/11] prep for hotplug support, take 2 Tejun Heo
2006-05-11 15:02 ` [PATCH 07/14] libata-hp-prep: store attached SCSI device Tejun Heo
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