diff --git a/kernel/allowlist.c b/kernel/allowlist.c
index 52538ee0..152139f0 100644
--- a/kernel/allowlist.c
+++ b/kernel/allowlist.c
@@ -10,6 +10,9 @@
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
+#include <linux/sched/task.h>
+#endif
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
 #include <linux/compiler_types.h>
 #endif
@@ -418,7 +421,11 @@ void persistent_allow_list()
         goto put_task;
     }
     cb->func = do_persistent_allow_list;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 7, 0)
     task_work_add(tsk, cb, TWA_RESUME);
+#else
+    task_work_add(tsk, cb, true);
+#endif
 
 put_task:
     put_task_struct(tsk);
diff --git a/kernel/file_wrapper.c b/kernel/file_wrapper.c
index c5c105f9..432e0645 100644
--- a/kernel/file_wrapper.c
+++ b/kernel/file_wrapper.c
@@ -243,7 +243,6 @@ static void ksu_wrapper_show_fdinfo(struct seq_file *m, struct file *f) {
 	}
 }
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
 static ssize_t ksu_wrapper_copy_file_range(struct file *f1, loff_t off1, struct file *f2,
 		loff_t off2, size_t sz, unsigned int flags) {
 	// TODO: determine which file to use
@@ -255,6 +254,7 @@ static ssize_t ksu_wrapper_copy_file_range(struct file *f1, loff_t off1, struct
 	return -EINVAL;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 19, 0)
 static loff_t ksu_wrapper_remap_file_range(struct file *file_in, loff_t pos_in,
 				struct file *file_out, loff_t pos_out,
 				loff_t len, unsigned int remap_flags) {
@@ -266,6 +266,15 @@ static loff_t ksu_wrapper_remap_file_range(struct file *file_in, loff_t pos_in,
 	}
 	return -EINVAL;
 }
+
+static int ksu_wrapper_fadvise(struct file *fp, loff_t off1, loff_t off2, int flags) {
+	struct ksu_file_wrapper* data = fp->private_data;
+	struct file* orig = data->orig;
+	if (orig->f_op->fadvise) {
+		return orig->f_op->fadvise(orig, off1, off2, flags);
+	}
+	return -EINVAL;
+}
 #else
 static int ksu_wrapper_clone_file_range(struct file *file_in, loff_t pos_in,
 				struct file *file_out, loff_t pos_out, u64 len) {
@@ -290,15 +299,6 @@ static ssize_t ksu_wrapper_dedupe_file_range(struct file *src_file, u64 loff,
 }
 #endif
 
-static int ksu_wrapper_fadvise(struct file *fp, loff_t off1, loff_t off2, int flags) {
-	struct ksu_file_wrapper* data = fp->private_data;
-	struct file* orig = data->orig;
-	if (orig->f_op->fadvise) {
-		return orig->f_op->fadvise(orig, off1, off2, flags);
-	}
-	return -EINVAL;
-}
-
 static int ksu_wrapper_release(struct inode *inode, struct file *filp) {
 	ksu_delete_file_wrapper(filp->private_data);
     return 0;
diff --git a/kernel/ksud.c b/kernel/ksud.c
index 6b0efc4e..1d18132b 100644
--- a/kernel/ksud.c
+++ b/kernel/ksud.c
@@ -10,6 +10,9 @@
 #include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/version.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 10, 0)
+#include <linux/sched/task.h>
+#endif
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)
 #include <linux/input-event-codes.h>
 #else
@@ -253,7 +256,11 @@ first_app_process:
         rcu_read_lock();
         init_task = rcu_dereference(current->parent);
         if (init_task) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
             task_work_add(init_task, &on_post_fs_data_cb, TWA_RESUME);
+#else
+            task_work_add(init_task, &on_post_fs_data_cb, true);
+#endif
         }
         rcu_read_unlock();
 
diff --git a/kernel/supercalls.c b/kernel/supercalls.c
index c1e2f73b..878a8d8f 100644
--- a/kernel/supercalls.c
+++ b/kernel/supercalls.c
@@ -383,10 +383,16 @@ static int do_get_wrapper_fd(void __user *arg) {
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 12, 0)
 #define getfd_secure anon_inode_create_getfd
-#else
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
 #define getfd_secure anon_inode_getfd_secure
+#else
+#define getfd_secure anon_inode_getfd
 #endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
     ret = getfd_secure("[ksu_fdwrapper]", &data->ops, data, f->f_flags, NULL);
+#else
+    ret = getfd_secure("[ksu_fdwrapper]", &data->ops, data, f->f_flags);
+#endif
     if (ret < 0) {
         pr_err("ksu_fdwrapper: getfd failed: %d\n", ret);
         goto put_wrapper_data;