From 35cd0689629fb5e8f88675be28cdbab06bc41c6f Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Sat, 7 Sep 2019 03:55:23 +0000 Subject: [PATCH] scst_vdisk: Set REQ_PRIO for SCSI commands marked as head-of-queue REQ_PRIO requests preempt others in the CFQ I/O scheduler. REQ_META marks metadata requests for blktrace. Reported-by: Lev Vainblat git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8579 d57e44dd-8a1f-0410-8b47-8ef2f437770f --- scst/src/dev_handlers/scst_vdisk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scst/src/dev_handlers/scst_vdisk.c b/scst/src/dev_handlers/scst_vdisk.c index 30ad0aa5b..03102417a 100644 --- a/scst/src/dev_handlers/scst_vdisk.c +++ b/scst/src/dev_handlers/scst_vdisk.c @@ -5972,7 +5972,7 @@ defined(CONFIG_SUSE_KERNEL) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0) #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 8, 0) || \ defined(CONFIG_SUSE_KERNEL) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0) - bio->bi_opf |= REQ_META; + bio->bi_opf |= REQ_PRIO; #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36) || \ (defined(RHEL_MAJOR) && \ (RHEL_MAJOR -0 > 6 || RHEL_MAJOR -0 == 6 && RHEL_MINOR -0 > 0))