From 2a3d4eb8e228061c09d5ca8bf39e7f00c2091213 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Dec 2018 16:17:02 +0100 Subject: scsi: flip the default on use_clustering Most SCSI drivers want to enable "clustering", that is merging of segments so that they might span more than a single page. Remove the ENABLE_CLUSTERING define, and require drivers to explicitly set DISABLE_CLUSTERING to disable this feature. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/scsi/advansys.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'drivers/scsi/advansys.c') diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c index 223ef6f4e258..95b4793c33f4 100644 --- a/drivers/scsi/advansys.c +++ b/drivers/scsi/advansys.c @@ -10808,14 +10808,6 @@ static struct scsi_host_template advansys_template = { * for non-ISA adapters. */ .unchecked_isa_dma = true, - /* - * All adapters controlled by this driver are capable of large - * scatter-gather lists. According to the mid-level SCSI documentation - * this obviates any performance gain provided by setting - * 'use_clustering'. But empirically while CPU utilization is increased - * by enabling clustering, I/O throughput increases as well. - */ - .use_clustering = ENABLE_CLUSTERING, }; static int advansys_wide_init_chip(struct Scsi_Host *shost) -- cgit v1.2.3