From 5c71beace2e9ccde9ba6d9ae3899ffa85a39d804629c65e6a0d399813d60c6ff Mon Sep 17 00:00:00 2001
From: nick wang <nwang@suse.com>
Date: Wed, 21 Nov 2018 08:55:22 +0000
Subject: [PATCH] Accepting request 650582 from
 home:wanghaisu:branches:network:ha-clustering:Factory

fix kernel compatible of sle15sp1, bsc#1116820.

OBS-URL: https://build.opensuse.org/request/show/650582
OBS-URL: https://build.opensuse.org/package/show/network:ha-clustering:Factory/drbd?expand=0&rev=78
---
 compat_have_mempool_init.patch | 83 ++++++++++++++++++++++++++++++++++
 drbd.changes                   |  6 +++
 drbd.spec                      |  4 ++
 3 files changed, 93 insertions(+)
 create mode 100644 compat_have_mempool_init.patch

diff --git a/compat_have_mempool_init.patch b/compat_have_mempool_init.patch
new file mode 100644
index 0000000..3c310a2
--- /dev/null
+++ b/compat_have_mempool_init.patch
@@ -0,0 +1,83 @@
+diff -Naur drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/drbd_wrappers.h drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/drbd_wrappers.h
+--- drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/drbd_wrappers.h	2018-11-21 16:42:49.173926025 +0800
++++ drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/drbd_wrappers.h	2018-11-21 16:44:33.373769980 +0800
+@@ -1348,8 +1348,11 @@
+ #endif
+ 
+ #ifndef COMPAT_HAVE_BIOSET_INIT
++
++#ifndef COMPAT_HAVE_MEMPOOL_INIT
+ #define mempool_free(V, P) mempool_free(V, *P)
+ #define mempool_alloc(P, F) mempool_alloc(*P, F)
++#endif
+ 
+ #ifndef COMPAT_HAVE_BIO_CLONE_FAST
+ # define bio_clone_fast(bio, gfp, bio_set) bio_clone(bio, gfp)
+@@ -1358,7 +1361,13 @@
+ #endif
+ 
+ #define bio_alloc_bioset(GFP, n, P) bio_alloc_bioset(GFP, n, *P)
++
++#ifndef COMPAT_HAVE_MEMPOOL_INIT
+ #define DRBD_MEMPOOL_T mempool_t *
++#else
++#define DRBD_MEMPOOL_T mempool_t
++#endif
++
+ #define DRBD_BIO_SET   bio_set *
+ static inline void bioset_exit(struct bio_set **bs)
+ {
+@@ -1367,6 +1376,8 @@
+ 		*bs = NULL;
+ 	}
+ }
++
++#ifndef COMPAT_HAVE_MEMPOOL_INIT
+ static inline void mempool_exit(mempool_t **p)
+ {
+ 	if (*p) {
+@@ -1374,6 +1385,8 @@
+ 		*p = NULL;
+ 	}
+ }
++#endif
++
+ #if defined(COMPAT_HAVE_BIOSET_NEED_BVECS)
+ #define bioset_init(BS, S, FP, F) __bioset_init(BS, S, FP, F)
+ #else
+@@ -1385,6 +1398,8 @@
+ 	*bs = bioset_create(size, front_pad, flags);
+ 	return *bs == NULL ? -ENOMEM : 0;
+ }
++
++#ifndef COMPAT_HAVE_MEMPOOL_INIT
+ static inline int
+ mempool_init_page_pool(mempool_t **pool, int min_nr, int order)
+ {
+@@ -1397,6 +1412,8 @@
+ 	*pool = mempool_create_slab_pool(min_nr, mem_cache);
+ 	return *pool == NULL ? -ENOMEM : 0;
+ }
++#endif
++
+ static inline bool
+ bioset_initialized(struct bio_set **bs)
+ {
+diff -Naur drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/have_mempool_init.c drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/have_mempool_init.c
+--- drbd-9.0.16+git.ab9777df.orig/drbd/drbd-kernel-compat/tests/have_mempool_init.c	1970-01-01 08:00:00.000000000 +0800
++++ drbd-9.0.16+git.ab9777df/drbd/drbd-kernel-compat/tests/have_mempool_init.c	2018-11-21 16:43:42.429846044 +0800
+@@ -0,0 +1,14 @@
++#include <linux/mempool.h>
++/*
++With linux v4.18 mempool_init get embedded
++commit c1a67fefd0546a5552289c65fe31b1d60e64b643
++Author: Kent Overstreet <kent.overstreet@gmail.com>
++Date:   Mon May 4 16:52:20 2015 -0700
++*/
++
++static int foo(void)
++{
++       struct mempool_s mempool_t; 
++
++       return mempool_init_page_pool(&mempool_t, 0, 0);
++}
diff --git a/drbd.changes b/drbd.changes
index 0acf831..5633e8c 100644
--- a/drbd.changes
+++ b/drbd.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Nov 21 07:47:51 UTC 2018 - nwang@suse.com
+
+- bsc#1116820, kernel compatible issue of sle15sp1
+- Add patch compat_have_mempool_init.patch
+
 -------------------------------------------------------------------
 Fri Oct 26 03:01:05 UTC 2018 - nwang@suse.com
 
diff --git a/drbd.spec b/drbd.spec
index fe34eb1..3a9cc9b 100644
--- a/drbd.spec
+++ b/drbd.spec
@@ -36,6 +36,7 @@ Source1:        preamble
 Source2:        Module.supported
 Source3:        drbd_git_revision
 Patch1:         fix-resync-finished-with-syncs-have-bits-set.patch
+Patch2:         compat_have_mempool_init.patch
 BuildRequires:  kernel-source
 BuildRequires:  kernel-syms
 BuildRequires:  libelf-devel
@@ -69,6 +70,7 @@ installed kernel.
 %prep
 %setup -q -n drbd-%{version}
 %patch1 -p1
+%patch2 -p1
 
 mkdir source
 cp -a drbd/. source/. || :
@@ -89,6 +91,8 @@ for flavor in %{flavors_to_build}; do
     cp %{_sourcedir}/Module.supported $flavor
     export DRBDSRC="$PWD/obj/$flavor"
     make -C %{kernel_source $flavor} modules M=$PWD/$flavor
+    #Check the compat result
+    cat $PWD/$flavor/compat.h
 done
 
 %install