diff --git a/sys/compat/linuxkpi/common/include/linux/shrinker.h b/sys/compat/linuxkpi/common/include/linux/shrinker.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/shrinker.h
@@ -0,0 +1,56 @@
+/*-
+ * Copyright (c) 2020 Emmanuel Vadot <manu@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __LINUX_SHRINKER_H__
+#define	__LINUX_SHRINKER_H__
+
+#include <sys/queue.h>
+
+struct shrink_control {
+	unsigned long	nr_to_scan;
+	unsigned long	nr_scanned;
+};
+
+struct shrinker {
+	unsigned long		(*count_objects)(struct shrinker *, struct shrink_control *);
+	unsigned long		(*scan_objects)(struct shrinker *, struct shrink_control *);
+	int			seeks;
+	long			batch;
+	TAILQ_ENTRY(shrinker)	next;
+};
+
+#define	SHRINK_STOP	(~0UL)
+
+#define	DEFAULT_SEEKS	2
+
+int	linuxkpi_register_shrinker(struct shrinker *s);
+void	linuxkpi_unregister_shrinker(struct shrinker *s);
+
+#define	register_shrinker(s)	linuxkpi_register_shrinker(s)
+#define	unregister_shrinker(s)	linuxkpi_unregister_shrinker(s)
+
+#endif	/* __LINUX_SHRINKER_H__ */
diff --git a/sys/compat/linuxkpi/common/src/linux_shrinker.c b/sys/compat/linuxkpi/common/src/linux_shrinker.c
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/src/linux_shrinker.c
@@ -0,0 +1,125 @@
+/*-
+ * Copyright (c) 2020 Emmanuel Vadot <manu@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/queue.h>
+#include <sys/eventhandler.h>
+#include <sys/mutex.h>
+
+#include <linux/shrinker.h>
+
+TAILQ_HEAD(, shrinker) lkpi_shrinkers = TAILQ_HEAD_INITIALIZER(lkpi_shrinkers);
+static struct mtx mtx_shrinker;
+
+int
+linuxkpi_register_shrinker(struct shrinker *s)
+{
+
+	KASSERT(s != NULL, ("NULL shrinker"));
+	KASSERT(s->count_objects != NULL, ("NULL shrinker"));
+	KASSERT(s->scan_objects != NULL, ("NULL shrinker"));
+	mtx_lock(&mtx_shrinker);
+	TAILQ_INSERT_TAIL(&lkpi_shrinkers, s, next);
+	mtx_unlock(&mtx_shrinker);
+	return (0);
+}
+
+void
+linuxkpi_unregister_shrinker(struct shrinker *s)
+{
+
+	mtx_lock(&mtx_shrinker);
+	TAILQ_REMOVE(&lkpi_shrinkers, s, next);
+	mtx_unlock(&mtx_shrinker);
+}
+
+#define	SHRINKER_BATCH	512
+
+static void
+shrinker_shrink(struct shrinker *s)
+{
+	struct shrink_control sc;
+	unsigned long can_free;
+	unsigned long batch;
+	unsigned long freeed = 0;
+	unsigned long ret;
+
+	can_free = s->count_objects(s, &sc);
+	if (can_free <= 0)
+		return;
+
+	batch = s->batch ? s->batch : SHRINKER_BATCH;
+	while (freeed <= can_free) {
+		sc.nr_to_scan = batch;
+		ret = s->scan_objects(s, &sc);
+		if (ret == SHRINK_STOP)
+			break;
+		freeed += ret;
+	}
+}
+
+static void
+linuxkpi_vm_lowmem(void *arg __unused)
+{
+	struct shrinker *s;
+
+	mtx_lock(&mtx_shrinker);
+	TAILQ_FOREACH(s, &lkpi_shrinkers, next) {
+		shrinker_shrink(s);
+	}
+	mtx_unlock(&mtx_shrinker);
+}
+
+static eventhandler_tag lowmem_tag;
+
+static void
+linuxkpi_sysinit_shrinker(void *arg __unused)
+{
+
+	mtx_init(&mtx_shrinker, "lkpi-shrinker", NULL, MTX_DEF);
+	lowmem_tag = EVENTHANDLER_REGISTER(vm_lowmem, linuxkpi_vm_lowmem,
+	    NULL, EVENTHANDLER_PRI_FIRST);
+}
+
+static void
+linuxkpi_sysuninit_shrinker(void *arg __unused)
+{
+
+	mtx_destroy(&mtx_shrinker);
+	EVENTHANDLER_DEREGISTER(vm_lowmem, lowmem_tag);
+}
+
+SYSINIT(linuxkpi_shrinker, SI_SUB_DRIVERS, SI_ORDER_ANY,
+    linuxkpi_sysinit_shrinker, NULL);
+SYSUNINIT(linuxkpi_shrinker, SI_SUB_DRIVERS, SI_ORDER_ANY,
+    linuxkpi_sysuninit_shrinker, NULL);
diff --git a/sys/conf/files b/sys/conf/files
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -4576,6 +4576,8 @@
 	compile-with "${LINUXKPI_C}"
 compat/linuxkpi/common/src/linux_shmemfs.c	optional compat_linuxkpi \
 	compile-with "${LINUXKPI_C}"
+compat/linuxkpi/common/src/linux_shrinker.c	optional compat_linuxkpi \
+	compile-with "${LINUXKPI_C}"
 compat/linuxkpi/common/src/linux_slab.c		optional compat_linuxkpi \
 	compile-with "${LINUXKPI_C}"
 compat/linuxkpi/common/src/linux_usb.c		optional compat_linuxkpi usb \
diff --git a/sys/modules/linuxkpi/Makefile b/sys/modules/linuxkpi/Makefile
--- a/sys/modules/linuxkpi/Makefile
+++ b/sys/modules/linuxkpi/Makefile
@@ -17,6 +17,7 @@
 	linux_seq_file.c \
 	linux_schedule.c \
 	linux_shmemfs.c \
+	linux_shrinker.c \
 	linux_slab.c \
 	linux_tasklet.c \
 	linux_usb.c \