fix: mm: remove vmalloc_sync_(un)mappings() (v5.8)

See upstream commit:

  commit 73f693c3a705756032c2863bfb37570276902d7d
  Author: Joerg Roedel <jroedel@suse.de>
  Date:   Mon Jun 1 21:52:36 2020 -0700

    mm: remove vmalloc_sync_(un)mappings()

    These functions are not needed anymore because the vmalloc and ioremap
    mappings are now synchronized when they are created or torn down.

    Remove all callers and function definitions.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Ifdefa35b25b4906cde407360e608b77e47cc3808

diff --git a/include/wrapper/vmalloc.h b/include/wrapper/vmalloc.h
index 83b09d9621e3b5307f87031bcaa18349d43fa09b..ff279bc1b7042fdb68abccf3844aa1010d2a215c 100644 (file)
--- a/include/wrapper/vmalloc.h
+++ b/include/wrapper/vmalloc.h
@@ -22,7 +22,17 @@
 #include <wrapper/kallsyms.h>
 #include <lttng/kernel-version.h>
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
+
+/*
+ * wrapper_vmalloc_sync_mappings was removed in v5.8, the vmalloc mappings
+ * are now synchronized when they are created or torn down.
+ */
+static inline
+void wrapper_vmalloc_sync_mappings(void)
+{}
+
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
   || LTTNG_KERNEL_RANGE(5,5,12, 5,6,0)            \
   || LTTNG_KERNEL_RANGE(5,4,28, 5,5,0)            \
   || LTTNG_KERNEL_RANGE(5,2,37, 5,3,0)            \