linux-kernel - [052/104] SCSI: Silencing killing requests for dead queue

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Message-Id: <20111207161219.043938665@clark.kroah.org>
Date:	Wed, 07 Dec 2011 08:11:54 -0800
From:	Greg KH <gregkh@...e.de>
To:	<linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Cc:	<torvalds@...ux-foundation.org>, <akpm@...ux-foundation.org>,
	<alan@...rguk.ukuu.org.uk>, Hannes Reinecke <hare@...e.de>,
	James Bottomley <JBottomley@...allels.com>,
	Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
Subject: [052/104] SCSI: Silencing killing requests for dead queue

3.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hannes Reinecke <hare@...e.de>

commit 745718132c3c7cac98a622b610e239dcd5217f71 upstream.

When we tear down a device we try to flush all outstanding
commands in scsi_free_queue(). However the check in
scsi_request_fn() is imperfect as it only signals that
we _might start_ aborting commands, not that we've actually
aborted some.
So move the printk inside the scsi_kill_request function,
this will also give us a hint about which commands are aborted.

Signed-off-by: Hannes Reinecke <hare@...e.de>
Signed-off-by: James Bottomley <JBottomley@...allels.com>
Cc: Christoph Biedl <linux-kernel.bfrz@...chmal.in-ulm.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/scsi/scsi_lib.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1408,6 +1408,8 @@ static void scsi_kill_request(struct req
 
 	blk_start_request(req);
 
+	scmd_printk(KERN_INFO, cmd, "killing request\n");
+
 	sdev = cmd->device;
 	starget = scsi_target(sdev);
 	shost = sdev->host;
@@ -1489,7 +1491,6 @@ static void scsi_request_fn(struct reque
 	struct request *req;
 
 	if (!sdev) {
-		printk("scsi: killing requests for dead queue\n");
 		while ((req = blk_peek_request(q)) != NULL)
 			scsi_kill_request(req, q);
 		return;


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