diff options
Diffstat (limited to 'rules-add-elevator-kernel-command-line-parameter.patch')
| -rw-r--r-- | rules-add-elevator-kernel-command-line-parameter.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/rules-add-elevator-kernel-command-line-parameter.patch b/rules-add-elevator-kernel-command-line-parameter.patch new file mode 100644 index 0000000..4e5f126 --- /dev/null +++ b/rules-add-elevator-kernel-command-line-parameter.patch @@ -0,0 +1,42 @@ +From 1255584bb0a595fb555af7e14230ab1b7aa6adcd Mon Sep 17 00:00:00 2001 +From: Lukas Nykryn <lnykryn@redhat.com> +Date: Tue, 12 Feb 2019 16:58:16 +0100 +Subject: [PATCH] rules: add elevator= kernel command line parameter + +Kernel removed the elevator= option + +Resolves: #1670126 +--- + rules.d/40-elevator.rules | 20 ++++++++++++++++++++ + 1 file changed, 20 insertions(+) + create mode 100644 rules.d/40-elevator.rules + +diff --git a/rules.d/40-elevator.rules b/rules.d/40-elevator.rules +new file mode 100644 +index 0000000000..5f615bf51a +--- /dev/null ++++ b/rules.d/40-elevator.rules +@@ -0,0 +1,20 @@ ++# We aren't adding devices skip the elevator check ++ACTION!="add", GOTO="sched_out" ++ ++SUBSYSTEM!="block", GOTO="sched_out" ++ENV{DEVTYPE}!="disk", GOTO="sched_out" ++ ++# Technically, dm-multipath can be configured to use an I/O scheduler. ++# However, there are races between the 'add' uevent and the linking in ++# of the queue/scheduler sysfs file. For now, just skip dm- devices. ++KERNEL=="dm-*|md*", GOTO="sched_out" ++ ++# Skip bio-based devices, which don't support an I/O scheduler. ++ATTR{queue/scheduler}=="none", GOTO="sched_out" ++ ++# If elevator= is specified on the kernel command line, change the ++# scheduler to the one specified. ++IMPORT{cmdline}="elevator" ++ENV{elevator}!="", ATTR{queue/scheduler}="$env{elevator}" ++ ++LABEL="sched_out" +-- +2.23.0 + |