linux-kernel - [RFC PATCH 0/2] Export lld busy state for request stacking drivers

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Message-Id: <20080925.115355.71085765.k-ueda@ct.jp.nec.com>
Date:	Thu, 25 Sep 2008 11:53:55 -0400 (EDT)
From:	Kiyoshi Ueda <k-ueda@...jp.nec.com>
To:	akpm@...ux-foundation.org, jens.axboe@...cle.com,
	James.Bottomley@...senPartnership.com
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	dm-devel@...hat.com, j-nomura@...jp.nec.com, k-ueda@...jp.nec.com
Subject: [RFC PATCH 0/2] Export lld busy state for request stacking drivers

Hi Andrew, Jens, James,

The following patches are the revised version to use lld's private data
instead of backing_dev_info.state for exporting lld busy state.

Please review and give me your opinion.
If all of you have no problem, I'll re-send the patches separately
to each maintainer, Jens and James.

The patches are created on the following commit of for-2.6.28
in linux-2.6-block, but the scsi part can be also applied to
scsi-post-merge-2.6.
---------------------------------------------------------------
commit c5062758edbe59286d7d8e718a59e4d4347ef541
Author: Jens Axboe <jens.axboe@...cle.com>
Date:   Wed Sep 24 13:05:10 2008 +0200

    libata: set queue SSD flag for SSD devices
---------------------------------------------------------------


Previous post and discussions about the interface:
    http://lkml.org/lkml/2008/9/19/138


Summary of the patches:
    1/2: block: add lld busy state exporting interface
    2/2: scsi: export busy state via q->lld_busy_fn()

Thanks,
Kiyoshi Ueda
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