From 9cb83c7529d929c00f37d821daed1942a1b20602 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Tue, 16 Oct 2007 11:24:32 +0200 Subject: [SCSI] add use_sg_chaining option to scsi_host_template This option is true if a low-level driver can support sg chaining. This will be removed eventually when all the drivers are converted to support sg chaining. q->max_phys_segments is set to SCSI_MAX_SG_SEGMENTS if false. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe --- drivers/scsi/scsi_lib.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_lib.c') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index c75cb6ad6d9..b6e6d801768 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1645,7 +1645,10 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost, * converted, so better keep it safe. */ #ifdef ARCH_HAS_SG_CHAIN - blk_queue_max_phys_segments(q, SCSI_MAX_SG_CHAIN_SEGMENTS); + if (shost->use_sg_chaining) + blk_queue_max_phys_segments(q, SCSI_MAX_SG_CHAIN_SEGMENTS); + else + blk_queue_max_phys_segments(q, SCSI_MAX_SG_SEGMENTS); #else blk_queue_max_phys_segments(q, SCSI_MAX_SG_SEGMENTS); #endif -- cgit v1.2.3