From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 7 Jul 2020 17:00:10 +0000 (-0400)
Subject: fix: global_dirty_limit was introduced in v3.1
X-Git-Tag: v2.12.2~7
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=f8ad643442b6a5d95f059fa334fe9ab38b7ea2f5;p=lttng-modules.git

fix: global_dirty_limit was introduced in v3.1

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Id97dbb2d0181a45c45cfed36c4be8753cabac283
---

diff --git a/wrapper/writeback.h b/wrapper/writeback.h
index 00d727cc..328c9323 100644
--- a/wrapper/writeback.h
+++ b/wrapper/writeback.h
@@ -51,7 +51,7 @@ unsigned long __canary__global_wb_domain(void)
 	return global_wb_domain.dirty_limit;
 }
 
-#else
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)
 
 static unsigned long *global_dirty_limit_sym;
 
@@ -88,11 +88,13 @@ unsigned long __canary__global_dirty_limit(void)
 
 #include <linux/writeback.h>
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,1,0)
 static inline
 unsigned long wrapper_global_dirty_limit(void)
 {
 	return global_dirty_limit;
 }
+#endif
 
 #endif