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| author | Mike Christie <michaelc@cs.wisc.edu> | 2007-05-30 12:57:21 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-06-02 15:35:36 -0400 |
| commit | d1d81c01f4bdd50577d9f89aa4a8e6344f63aa70 (patch) | |
| tree | 60c681cc1b9d51864d1a0c283b78f4596d8a8fe9 | |
| parent | dbdb016d92603619d972082167c10b8c74e605cc (diff) | |
| download | talos-op-linux-d1d81c01f4bdd50577d9f89aa4a8e6344f63aa70.tar.gz talos-op-linux-d1d81c01f4bdd50577d9f89aa4a8e6344f63aa70.zip | |
[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 <pw@osc.edu>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | 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 6eaa2e3a9252..4e9f0d9a55ea 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, }; |
