From: Wayne Boyer Date: Thu, 31 Mar 2011 16:56:10 +0000 (-0700) Subject: [SCSI] ipr: fix synchronous request flags for better performance X-Git-Tag: v3.0-rc1~383^2~85 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ab6c10b136d5f8eb856a0f17247edc7c19805e1b;p=profile%2Fivi%2Fkernel-x86-ivi.git [SCSI] ipr: fix synchronous request flags for better performance In testing it was noticed that Extended Delay after Reset flag was being set for gscsi and volume set devices. This had a negative effect on performance for volume sets. The fix is to only set the flag for gscsi devices. Signed-off-by: Wayne Boyer Acked-by: Brian King Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 0621238..37790c0 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -5773,7 +5773,8 @@ static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd, } ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC; - ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; + if (ipr_is_gscsi(res)) + ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST; ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR; ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd); } diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index 13f425f..11b2dac 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -474,7 +474,7 @@ struct ipr_cmd_pkt { u8 flags_lo; #define IPR_FLAGS_LO_ALIGNED_BFR 0x20 -#define IPR_FLAGS_LO_DELAY_AFTER_RST 0x10 +#define IPR_FLAGS_LO_DELAY_AFTER_RST 0x10 #define IPR_FLAGS_LO_UNTAGGED_TASK 0x00 #define IPR_FLAGS_LO_SIMPLE_TASK 0x02 #define IPR_FLAGS_LO_ORDERED_TASK 0x04