D18606.1794029170.diff
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	Index: head/sys/compat/linuxkpi/common/include/linux/mm.h
	===================================================================
	--- head/sys/compat/linuxkpi/common/include/linux/mm.h
	+++ head/sys/compat/linuxkpi/common/include/linux/mm.h
	@@ -180,12 +180,8 @@
	return (-ENOTSUP);
	}

	-static inline int
	-zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
	- unsigned long size)
	-{
	- return (-ENOTSUP);
	-}
	+int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
	+ unsigned long size);

	static inline int
	remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
	Index: head/sys/compat/linuxkpi/common/src/linux_compat.c
	===================================================================
	--- head/sys/compat/linuxkpi/common/src/linux_compat.c
	+++ head/sys/compat/linuxkpi/common/src/linux_compat.c
	@@ -672,6 +672,25 @@
	},
	};

	+int
	+zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
	+ unsigned long size)
	+{
	+ vm_object_t obj;
	+ vm_page_t m;
	+
	+ obj = vma->vm_obj;
	+ if (obj == NULL \|\| (obj->flags & OBJ_UNMANAGED) != 0)
	+ return (-ENOTSUP);
	+ VM_OBJECT_RLOCK(obj);
	+ for (m = vm_page_find_least(obj, OFF_TO_IDX(address));
	+ m != NULL && m->pindex < OFF_TO_IDX(address + size);
	+ m = TAILQ_NEXT(m, listq))
	+ pmap_remove_all(m);
	+ VM_OBJECT_RUNLOCK(obj);
	+ return (0);
	+}
	+
	#define OPW(fp,td,code) ({ \
	struct file *__fpop; \
	__typeof(code) __retval; \