From 39be46f43f96fb7420386d03751b01f5cb376d6b Mon Sep 17 00:00:00 2001
From: Robert Evans <evansr@google.com>
Date: Fri, 29 Mar 2024 20:11:52 -0400
Subject: [PATCH] Linux 5.18+ compat: Detect filemap_range_has_page

In v5.18 `filemap_range_has_page` moved to `pagemap.h`

`pagemap.h` has been around since 3.10 so just include both

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Signed-off-by: Robert Evans <evansr@google.com>
Closes #16034
---
 config/kernel-filemap.m4 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/config/kernel-filemap.m4 b/config/kernel-filemap.m4
index 745928168f..0b7da828d2 100644
--- a/config/kernel-filemap.m4
+++ b/config/kernel-filemap.m4
@@ -4,6 +4,7 @@ dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_FILEMAP], [
 	ZFS_LINUX_TEST_SRC([filemap_range_has_page], [
 		#include <linux/fs.h>
+		#include <linux/pagemap.h>
 	],[
 		struct address_space *mapping = NULL;
 		loff_t lstart = 0;