linux-kernel - [RFC PATCH 12/13] dm-mpath: add hw-handler interface

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Message-Id: <20080319.181153.66055860.k-ueda@ct.jp.nec.com>
Date:	Wed, 19 Mar 2008 18:11:53 -0500 (EST)
From:	Kiyoshi Ueda <k-ueda@...jp.nec.com>
To:	jens.axboe@...cle.com, michaelc@...wisc.edu, hare@...e.de,
	agk@...hat.com, linux-kernel@...r.kernel.org
Cc:	linux-scsi@...r.kernel.org, dm-devel@...hat.com,
	j-nomura@...jp.nec.com, k-ueda@...jp.nec.com
Subject: [RFC PATCH 12/13] dm-mpath: add hw-handler interface

This patch adds a hw-handler interface for request-based dm-multipath.

Signed-off-by: Kiyoshi Ueda <k-ueda@...jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@...jp.nec.com>
---
 drivers/md/dm-hw-handler.h |    1 +
 1 files changed, 1 insertion(+)

Index: 2.6.25-rc5/drivers/md/dm-hw-handler.h
===================================================================
--- 2.6.25-rc5.orig/drivers/md/dm-hw-handler.h
+++ 2.6.25-rc5/drivers/md/dm-hw-handler.h
@@ -35,6 +35,7 @@ struct hw_handler_type {
 	void (*pg_init) (struct hw_handler *hwh, unsigned bypassed,
 			 struct dm_path *path);
 	unsigned (*error) (struct hw_handler *hwh, struct bio *bio);
+	unsigned (*error_rq) (struct hw_handler *hwh, struct request *rq);
 	int (*status) (struct hw_handler *hwh, status_type_t type,
 		       char *result, unsigned int maxlen);
 };
--
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