From: James Bottomley <James.Bottomley@SteelEye.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <axboe@suse.de>,
SCSI Mailing List <linux-scsi@vger.kernel.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH scsi-misc-2.6 07/08] scsi: remove bogus {get|put}_device() calls
Date: Tue, 22 Mar 2005 22:15:55 -0600 [thread overview]
Message-ID: <1111551355.5520.100.camel@mulgrave> (raw)
In-Reply-To: <20050323021335.0D9E25EE@htj.dyndns.org>
On Wed, 2005-03-23 at 11:14 +0900, Tejun Heo wrote:
> So, basically, SCSI high-level object (scsi_disk) and
> mid-level object (scsi_device) are reference counted by users,
> not the requests they submit. Reference count cannot go zero
> with active users and users cannot access the object once the
> reference count reaches zero.
Actually, no. Unfortunately we still have some fire and forget APIs, so
the contention that we always have an open refcounted descriptor isn't
always true.
James
next prev parent reply other threads:[~2005-03-23 4:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-23 2:14 [PATCH scsi-misc-2.6 00/08] scsi: small fixes & cleanups Tejun Heo
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 01/08] scsi: remove unused bounce-buffer release path Tejun Heo
2005-03-23 4:07 ` James Bottomley
2005-03-23 6:08 ` Tejun Heo
2005-03-23 15:27 ` Jens Axboe
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 02/08] scsi: don't use blk_insert_request() for requeueing Tejun Heo
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 03/08] scsi: remove unused scsi_cmnd->internal_timeout field Tejun Heo
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 04/08] scsi: remove meaningless volatile qualifiers from structure definitions Tejun Heo
2005-03-23 4:15 ` James Bottomley
2005-03-23 4:22 ` Jeff Garzik
2005-03-23 5:28 ` Tejun Heo
2005-03-23 15:16 ` James Bottomley
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 05/08] scsi: remove a timer race from scsi_queue_insert() and cleanup timer Tejun Heo
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 06/08] scsi: remove meaningless scsi_cmnd->serial_number_at_timeout field Tejun Heo
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 07/08] scsi: remove bogus {get|put}_device() calls Tejun Heo
2005-03-23 4:15 ` James Bottomley [this message]
2005-03-23 9:13 ` Tejun Heo
2005-03-29 17:02 ` Patrick Mansfield
2005-03-23 2:14 ` [PATCH scsi-misc-2.6 08/08] scsi: fix hot unplug sequence Tejun Heo
2005-03-23 4:08 ` James Bottomley
2005-03-23 4:50 ` Tejun Heo
2005-03-23 7:19 ` Jens Axboe
2005-03-23 15:20 ` James Bottomley
2005-03-23 15:25 ` Jens Axboe
2005-03-25 0:45 ` James Bottomley
2005-03-25 3:15 ` Tejun Heo
2005-03-25 5:02 ` James Bottomley
2005-03-25 5:38 ` Tejun Heo
2005-03-25 19:19 ` James Bottomley
2005-03-25 21:43 ` Tejun Heo
2005-03-25 22:49 ` James Bottomley
2005-03-26 7:27 ` Kai Makisara
2005-03-26 14:48 ` James Bottomley
2005-03-23 15:12 ` James Bottomley
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