Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d1d81c01f4bdd50577d9f89aa4a8e6344f63aa70
Commit: d1d81c01f4bdd50577d9f89aa4a8e6344f63aa70
Parent: dbdb016d92603619d972082167c10b8c74e605cc
Author: Mike Christie <[EMAIL PROTECTED]>
AuthorDate: Wed May 30 12:57:21 2007 -0500
Committer: James Bottomley <[EMAIL PROTECTED]>
CommitDate: Sat Jun 2 15:35:36 2007 -0400
[SCSI] iscsi_tcp: remove DMA alignment restriction
Add a slave_configure function to iSCSI TCP to remove any DMA
alignment restriction. This permits the use of direct IO from
arbitrary addresses.
Signed-off-by: Pete Wyckoff <[EMAIL PROTECTED]>
Signed-off-by: Mike Christie <[EMAIL PROTECTED]>
Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
---
drivers/scsi/iscsi_tcp.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c
index 6eaa2e3..4e9f0d9 100644
--- a/drivers/scsi/iscsi_tcp.c
+++ b/drivers/scsi/iscsi_tcp.c
@@ -36,6 +36,7 @@
#include <linux/scatterlist.h>
#include <net/tcp.h>
#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi.h>
#include <scsi/scsi_transport_iscsi.h>
@@ -2184,6 +2185,12 @@ static void iscsi_tcp_session_destroy(struct
iscsi_cls_session *cls_session)
iscsi_session_teardown(cls_session);
}
+static int iscsi_tcp_slave_configure(struct scsi_device *sdev)
+{
+ blk_queue_dma_alignment(sdev->request_queue, 0);
+ return 0;
+}
+
static struct scsi_host_template iscsi_sht = {
.name = "iSCSI Initiator over TCP/IP",
.queuecommand = iscsi_queuecommand,
@@ -2195,6 +2202,7 @@ static struct scsi_host_template iscsi_sht = {
.eh_abort_handler = iscsi_eh_abort,
.eh_host_reset_handler = iscsi_eh_host_reset,
.use_clustering = DISABLE_CLUSTERING,
+ .slave_configure = iscsi_tcp_slave_configure,
.proc_name = "iscsi_tcp",
.this_id = -1,
};
-
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