X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_mmap.c;h=06b67eb4d3944c410263a5f36ccf5246e409341d;hb=78f56ae3a0c007bf1be7e01731d372f79fe6781e;hp=35d30e7ec75d2426d4b74f3debb3466eb07b74ba;hpb=c075712b6e6ba766c844f4504ac012c49d1f6b4b;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_mmap.c b/lib/ringbuffer/ring_buffer_mmap.c
index 35d30e7e..06b67eb4 100644
--- a/lib/ringbuffer/ring_buffer_mmap.c
+++ b/lib/ringbuffer/ring_buffer_mmap.c
@@ -1,24 +1,12 @@
-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * ring_buffer_mmap.c
  *
  * Copyright (C) 2002-2005 - Tom Zanussi <zanussi@us.ibm.com>, IBM Corp
  * Copyright (C) 1999-2005 - Karim Yaghmour <karim@opersys.com>
  * Copyright (C) 2008-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; only version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Re-using code from kernel/relay.c, hence the GPLv2 license for this
+ * Re-using code from kernel/relay.c, hence the GPL-2.0 license for this
  * file.
  */
 
@@ -32,7 +20,12 @@
 /*
  * fault() vm_op implementation for ring buffer file mapping.
  */
-static int lib_ring_buffer_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,1,0) || \
+	LTTNG_RHEL_KERNEL_RANGE(4,18,0,193,0,0, 4,19,0,0,0,0))
+static vm_fault_t lib_ring_buffer_fault_compat(struct vm_area_struct *vma, struct vm_fault *vmf)
+#else
+static int lib_ring_buffer_fault_compat(struct vm_area_struct *vma, struct vm_fault *vmf)
+#endif
 {
 	struct lib_ring_buffer *buf = vma->vm_private_data;
 	struct channel *chan = buf->backend.chan;
@@ -65,6 +58,26 @@ static int lib_ring_buffer_fault(struct vm_area_struct *vma, struct vm_fault *vm
 	return 0;
 }
 
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,1,0) || \
+	LTTNG_RHEL_KERNEL_RANGE(4,18,0,193,0,0, 4,19,0,0,0,0))
+static vm_fault_t lib_ring_buffer_fault(struct vm_fault *vmf)
+{
+	struct vm_area_struct *vma = vmf->vma;
+	return lib_ring_buffer_fault_compat(vma, vmf);
+}
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0))
+static int lib_ring_buffer_fault(struct vm_fault *vmf)
+{
+	struct vm_area_struct *vma = vmf->vma;
+	return lib_ring_buffer_fault_compat(vma, vmf);
+}
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
+static int lib_ring_buffer_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	return lib_ring_buffer_fault_compat(vma, vmf);
+}
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,11,0)) */
+
 /*
  * vm_ops for ring buffer file mappings.
  */