From: Michael Jeanson <mjeanson@efficios.com>
Date: Fri, 2 Oct 2020 20:10:05 +0000 (-0400)
Subject: fix: backport 'Add 'kernel_read' wrapper for kernels < v4.14'
X-Git-Tag: v2.12.3~2
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=cb4d858eab5fd606ed8cb7fa881c61fc126cdbb7;p=lttng-modules.git

fix: backport 'Add 'kernel_read' wrapper for kernels < v4.14'

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I3b558a6a4b850054d5786bdf99e0849091c83eae
---

diff --git a/include/wrapper/fs.h b/include/wrapper/fs.h
deleted file mode 100644
index f11c19fc..00000000
--- a/include/wrapper/fs.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * wrapper/fs.h
- *
- * Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com>
- */
-
-#ifndef _LTTNG_WRAPPER_FS_H
-#define _LTTNG_WRAPPER_FS_H
-
-#include <linux/fs.h>
-#include <lttng/kernel-version.h>
-
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
-
-static inline
-ssize_t lttng_kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
-{
-	return kernel_read(file, buf, count, pos);
-}
-
-#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0) */
-
-static inline
-ssize_t lttng_kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
-{
-	ssize_t len;
-
-	len = kernel_read(file, *pos, buf, count);
-
-	/*
-	 * Move 'pos' forward since it's passed by value in this
-	 * implementation of 'kernel_read'.
-	 */
-	if (len > 0)
-		(*pos) += len;
-
-	return len;
-}
-
-#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0) */
-
-#endif /* _LTTNG_WRAPPER_FS_H */
diff --git a/wrapper/fs.h b/wrapper/fs.h
new file mode 100644
index 00000000..99697f87
--- /dev/null
+++ b/wrapper/fs.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
+ * wrapper/fs.h
+ *
+ * Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com>
+ */
+
+#ifndef _LTTNG_WRAPPER_FS_H
+#define _LTTNG_WRAPPER_FS_H
+
+#include <linux/fs.h>
+#include <lttng-kernel-version.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0))
+
+static inline
+ssize_t lttng_kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
+{
+	return kernel_read(file, buf, count, pos);
+}
+
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0) */
+
+static inline
+ssize_t lttng_kernel_read(struct file *file, void *buf, size_t count, loff_t *pos)
+{
+	ssize_t len;
+
+	len = kernel_read(file, *pos, buf, count);
+
+	/*
+	 * Move 'pos' forward since it's passed by value in this
+	 * implementation of 'kernel_read'.
+	 */
+	if (len > 0)
+		(*pos) += len;
+
+	return len;
+}
+
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0) */
+
+#endif /* _LTTNG_WRAPPER_FS_H */