Tools: fix mdflush

Include blkdev.h instead of genhd.h

Resolves: rhbz#2108001

bcc-0.24.0-tools-mdflush-include-blkdev.h-instead-of-genhd.h.patch

@@ -0,0 +1,30 @@
+From 93a464e2ef05b7ef78b5679e366b89fcddf6a575 Mon Sep 17 00:00:00 2001
+From: Jerome Marchand <jmarchan@redhat.com>
+Date: Mon, 1 Aug 2022 11:45:41 +0200
+Subject: [PATCH] tools/mdflush: include blkdev.h instead of genhd.h
+
+In recent kernels, i.e. since commit 322cbb50de71 ("block: remove
+genhd.h"), genhd.h header has been removed and its content moved to
+blkdev.h. Since genhd.h has been included in blkdev.h since forever,
+including blkdev instead of genhd in the mdflush tool works for both
+older and newer kernel.
+---
+ tools/mdflush.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/mdflush.py b/tools/mdflush.py
+index 3581d1bf..6741d563 100755
+--- a/tools/mdflush.py
++++ b/tools/mdflush.py
+@@ -19,7 +19,7 @@ from time import strftime
+ b = BPF(text="""
+ #include <uapi/linux/ptrace.h>
+ #include <linux/sched.h>
+-#include <linux/genhd.h>
++#include <linux/blkdev.h>
+ #include <linux/bio.h>
+ 
+ struct data_t {
+-- 
+2.37.1
+

bcc.spec

@@ -25,7 +25,7 @@
 
 Name:           bcc
 Version:        0.24.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        BPF Compiler Collection (BCC)
 License:        ASL 2.0
 URL:            https://github.com/iovisor/bcc
@@ -38,6 +38,7 @@ Patch4:         %{name}-%{version}-Revert-libbpf-1.0-changes.patch
 Patch5:         %{name}-%{version}-C9S-Fix-mdflush.patch
 Patch6:         %{name}-%{version}-biolatency-biolatpcts-biosnoop-biotop-Build-fix-for-.patch
 Patch7:         %{name}-%{version}-libbpf-tools-Fix-dropped-request-rq_disk-for-kernel-.patch
+Patch8:         %{name}-%{version}-tools-mdflush-include-blkdev.h-instead-of-genhd.h.patch
 
 # Arches will be included as upstream support is added and dependencies are
 # satisfied in the respective arches
@@ -261,6 +262,9 @@ cp -a libbpf-tools/tmp-install/bin/* %{buildroot}/%{_sbindir}/
 %endif
 
 %changelog
+* Tue Aug 23 2022 Jerome Marchand <jmarchan@redhat.com> - 0.24.1-4
+- Fix mdflush tool (rhbz#2108001)
+
 * Fri Jul 01 2022 Jerome Marchand <jmarchan@redhat.com> - 0.24.1-3
 - Rebuild for libbpf 0.6.0