From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: Maximum data size in a single transfer for MS driver
Date: Thu, 25 Feb 2010 11:49:42 -0500
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References: <Pine.LNX.4.44L0.1002251132170.1686-100000@iolanthe.rowland.org>
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In-Reply-To: <Pine.LNX.4.44L0.1002251132170.1686-100000@iolanthe.rowland.org>
	(Alan Stern's message of "Thu, 25 Feb 2010 11:37:49 -0500 (EST)")
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To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>, Ramya Desai <ramya.desai@gmail.com>, James Bottomley <James.Bottomley@suse.de>, Jens Axboe <jens.axboe@oracle.com>, USB list <linux-usb@vger.kernel.org>, SCSI development list <linux-scsi@vger.kernel.org>, Greg KH <greg@kroah.com>

>>>>> "Alan" == Alan Stern <stern@rowland.harvard.edu> writes:

Alan> If they call blk_queue_max_sectors() then both the hard and soft
Alan> limits are affected, but at least the hard limit is set correctly.

Yep.


Alan> If they call blk_queue_max_hw_sectors() then only the hard limit
Alan> is affected, 

This one is a runt that came in as part of the DM topology enablement.
DM ended up doing things differently and it is no longer used.  I
already have a patch in my queue that removes it.

-- 
Martin K. Petersen	Oracle Linux Engineering