From b6d44fe9582b9d90a0b16f508ac08a90d899bf56 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Thu, 26 Jul 2007 12:46:47 -0500 Subject: [PATCH] [SCSI] iscsi_tcp: Turn off bounce buffers It was found by LSI that on setups with large amounts of memory we were bouncing buffers when we did not need to. If the iscsi tcp code touches the data buffer (or a helper does), it will kmap the buffer. iscsi_tcp also does not interact with hardware, so it does not have any hw dma restrictions. This patch sets the bounce buffer settings for our device queue so buffers should not be bounced because of a driver limit. Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/iscsi_tcp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 93034b43ef..a21455d027 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -2216,6 +2216,7 @@ static void iscsi_tcp_session_destroy(struct iscsi_cls_session *cls_session) static int iscsi_tcp_slave_configure(struct scsi_device *sdev) { + blk_queue_bounce_limit(sdev->request_queue, BLK_BOUNCE_ANY); blk_queue_dma_alignment(sdev->request_queue, 0); return 0; } -- 2.39.5