From mboxrd@z Thu Jan  1 00:00:00 1970
From: joystick <joystick@shiftmail.org>
Subject: TRIM / UNMAP read response
Date: Fri, 12 Aug 2011 15:28:14 +0200
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To: linux-ide@vger.kernel.org, "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
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Hi all IDE and SCSI ml's,

is it guaranteed by the standards that reading from a device a region 
that has been TRIMmed (IDE) or UNMAPped (SCSI) will certainly return zeroes?

Thank you