From mboxrd@z Thu Jan 1 00:00:00 1970 From: Parav Pandit Subject: state of the I/O memory when arrives at low level HBA driver Date: Tue, 4 Sep 2007 04:50:19 -0700 (PDT) Message-ID: <547218.81228.qm@web30103.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: Received: from web30103.mail.mud.yahoo.com ([209.191.69.35]:31945 "HELO web30103.mail.mud.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752137AbXIDLuU (ORCPT ); Tue, 4 Sep 2007 07:50:20 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi Hi, This may be petty question, but I am not really sure about this. When a I/O comes to the low level SCSI HBA driver through enqueue() interface, can it happen that I/O data memory is paged out or can be paged out? I mean, doing DMA mapping such as pci_map_single() provides, just physical addresses or it also (page-in if requires) followed by locking the page(s) in the system? Regards, Parav Pandit ____________________________________________________________________________________ Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow