From: Randy Dunlap <rdunlap@xenotime.net>

ppa cannot handle highmem pages, and like imm, which already has this
patch, the device is slow, so performance is not a big issue, so just force
pages to be in low memory (hence mapped).

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/scsi/ppa.c |    7 +++++++
 1 files changed, 7 insertions(+)

diff -puN drivers/scsi/ppa.c~ppa-no-highmem-pages drivers/scsi/ppa.c
--- 25/drivers/scsi/ppa.c~ppa-no-highmem-pages	Fri May 19 14:21:10 2006
+++ 25-akpm/drivers/scsi/ppa.c	Fri May 19 14:21:10 2006
@@ -982,6 +982,12 @@ static int device_check(ppa_struct *dev)
 	return -ENODEV;
 }
 
+static int ppa_adjust_queue(struct scsi_device *device)
+{
+	blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH);
+	return 0;
+}
+
 static struct scsi_host_template ppa_template = {
 	.module			= THIS_MODULE,
 	.proc_name		= "ppa",
@@ -997,6 +1003,7 @@ static struct scsi_host_template ppa_tem
 	.cmd_per_lun		= 1,
 	.use_clustering		= ENABLE_CLUSTERING,
 	.can_queue		= 1,
+	.slave_alloc		= ppa_adjust_queue,
 };
 
 /***************************************************************************
_