linux-kernel - [PATCHSET block:for-3.2/core] further updates to blk_cleanup

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Date:	Thu, 20 Oct 2011 20:56:34 -0700
From:	Tejun Heo <tj@...nel.org>
To:	axboe@...nel.dk, vgoyal@...hat.com, jgarzik@...ox.com,
	davem@...emloft.net
Cc:	linux-kernel@...r.kernel.org, ctalbott@...gle.com, rni@...gle.com
Subject: [PATCHSET block:for-3.2/core] further updates to blk_cleanup_queue()

Hello,

Patchset "fix request_queue life-cycle management"[1] tried to fix
lifecycle management by making blk_cleanup_queue() drain and shut down
the queue; however, there still are some holes.  This patchset
tightens externally visible API a bit and plugs those holes.

 0001-block-sx8-kill-blk_insert_request.patch
 0002-block-allow-blk_execute_rq_nowait-to-be-called-form-.patch
 0003-block-ide-unexport-elv_add_request.patch
 0004-block-add-blk_queue_dead.patch
 0005-block-fix-drain_all-condition-in-blk_drain_queue.patch
 0006-block-add-missing-blk_queue_dead-checks.patch

0001-0003 remove/unexport two request insertion functions which don't
have proper DEAD check.  Users are switched to
blk_execute_rq_nowait().

0004 adds blk_queue_dead() macro for convenience.

0005 updates blk_drain_queue() such that it also waits for requests
which weren't allocated from block layer.

0006 adds missing DEAD checks.

This patchset is on top of the block:for-3.2/core 3bcfeaf93f4 "block:
initialize the bounce pool if high memory may be added later" and
available in the following git branch.

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git block-ref

diffstat follows.

 block/blk-core.c         |  105 ++++++++++++++++++++---------------------------
 block/blk-exec.c         |   15 ++++--
 block/blk-flush.c        |    2 
 block/blk-sysfs.c        |    4 -
 block/blk-throttle.c     |    4 -
 block/blk.h              |    3 -
 block/elevator.c         |   16 +------
 drivers/block/sx8.c      |   12 +++--
 drivers/ide/ide-atapi.c  |    7 +--
 drivers/ide/ide-park.c   |    2 
 include/linux/blkdev.h   |    2 
 include/linux/elevator.h |    2 
 12 files changed, 78 insertions(+), 96 deletions(-)

Thanks.

--
tejun

[1] http://thread.gmane.org/gmane.linux.kernel/1205150
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