diff --git a/config/kernel-vfs-rw-iterate.m4 b/config/kernel-vfs-rw-iterate.m4
index cb20ed030..7c568e94f 100644
--- a/config/kernel-vfs-rw-iterate.m4
+++ b/config/kernel-vfs-rw-iterate.m4
@@ -54,27 +54,3 @@ AC_DEFUN([ZFS_AC_KERNEL_VFS_RW_ITERATE], [
 		AC_MSG_RESULT(no)
 	])
 ])
-
-dnl #
-dnl # Linux 4.1.x API
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS], [
-	ZFS_LINUX_TEST_SRC([generic_write_checks], [
-		#include <linux/fs.h>
-	],[
-		struct kiocb *iocb = NULL;
-		struct iov_iter *iov = NULL;
-		generic_write_checks(iocb, iov);
-	])
-])
-
-AC_DEFUN([ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS], [
-	AC_MSG_CHECKING([whether generic_write_checks() takes kiocb])
-	ZFS_LINUX_TEST_RESULT([generic_write_checks], [
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_GENERIC_WRITE_CHECKS_KIOCB, 1,
-		    [generic_write_checks() takes kiocb])
-	],[
-		AC_MSG_RESULT(no)
-	])
-])
diff --git a/config/kernel.m4 b/config/kernel.m4
index 84cc572d6..2a5b96f24 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -104,7 +104,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
 	ZFS_AC_KERNEL_SRC_VFS_READPAGES
 	ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS
 	ZFS_AC_KERNEL_SRC_VFS_RW_ITERATE
-	ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS
 	ZFS_AC_KERNEL_SRC_VFS_IOV_ITER
 	ZFS_AC_KERNEL_SRC_VFS_COPY_FILE_RANGE
 	ZFS_AC_KERNEL_SRC_VFS_GENERIC_COPY_FILE_RANGE
@@ -247,7 +246,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
 	ZFS_AC_KERNEL_VFS_READPAGES
 	ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS
 	ZFS_AC_KERNEL_VFS_RW_ITERATE
-	ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS
 	ZFS_AC_KERNEL_VFS_IOV_ITER
 	ZFS_AC_KERNEL_VFS_COPY_FILE_RANGE
 	ZFS_AC_KERNEL_VFS_GENERIC_COPY_FILE_RANGE
diff --git a/module/os/linux/zfs/zpl_file.c b/module/os/linux/zfs/zpl_file.c
index 67a2857d7..d0eaa6289 100644
--- a/module/os/linux/zfs/zpl_file.c
+++ b/module/os/linux/zfs/zpl_file.c
@@ -298,23 +298,11 @@ static inline ssize_t
 zpl_generic_write_checks(struct kiocb *kiocb, struct iov_iter *from,
     size_t *countp)
 {
-#ifdef HAVE_GENERIC_WRITE_CHECKS_KIOCB
 	ssize_t ret = generic_write_checks(kiocb, from);
 	if (ret <= 0)
 		return (ret);
 
 	*countp = ret;
-#else
-	struct file *file = kiocb->ki_filp;
-	struct address_space *mapping = file->f_mapping;
-	struct inode *ip = mapping->host;
-	int isblk = S_ISBLK(ip->i_mode);
-
-	*countp = iov_iter_count(from);
-	ssize_t ret = generic_write_checks(file, &kiocb->ki_pos, countp, isblk);
-	if (ret)
-		return (ret);
-#endif
 
 	return (0);
 }