Index: sys/sys/malloc.h
===================================================================
--- sys/sys/malloc.h
+++ sys/sys/malloc.h
@@ -62,6 +62,7 @@
 #define	M_BESTFIT	0x2000		/* only for vmem, low fragmentation */
 #define	M_EXEC		0x4000		/* allocate executable space */
 #define	M_NEXTFIT	0x8000		/* only for vmem, follow cursor */
+#define	M_NORECLAIM	0x10000		/* do not reclaim after failure */
 
 #define	M_VERSION	2020110501
 
Index: sys/vm/vm_kern.c
===================================================================
--- sys/vm/vm_kern.c
+++ sys/vm/vm_kern.c
@@ -177,17 +177,22 @@
 {
 	vm_page_t m;
 	int tries;
-	bool wait;
+	bool wait, reclaim;
 
 	VM_OBJECT_ASSERT_WLOCKED(object);
 
+	/* Disallow an invalid combination of flags. */
+	MPASS((pflags & (VM_ALLOC_WAITOK | VM_ALLOC_NORECLAIM)) !=
+	    (VM_ALLOC_WAITOK | VM_ALLOC_NORECLAIM));
+
 	wait = (pflags & VM_ALLOC_WAITOK) != 0;
+	reclaim = (pflags & VM_ALLOC_NORECLAIM) == 0;
 	pflags &= ~(VM_ALLOC_NOWAIT | VM_ALLOC_WAITOK | VM_ALLOC_WAITFAIL);
 	pflags |= VM_ALLOC_NOWAIT;
 	for (tries = wait ? 3 : 1;; tries--) {
 		m = vm_page_alloc_contig_domain(object, pindex, domain, pflags,
 		    npages, low, high, alignment, boundary, memattr);
-		if (m != NULL || tries == 0)
+		if (m != NULL || tries == 0 || !reclaim)
 			break;
 
 		VM_OBJECT_WUNLOCK(object);
Index: sys/vm/vm_page.h
===================================================================
--- sys/vm/vm_page.h
+++ sys/vm/vm_page.h
@@ -541,6 +541,7 @@
 #define	VM_ALLOC_WAITFAIL	0x0010	/* (acf) Sleep and return error */
 #define	VM_ALLOC_WIRED		0x0020	/* (acfgp) Allocate a wired page */
 #define	VM_ALLOC_ZERO		0x0040	/* (acfgp) Allocate a prezeroed page */
+#define	VM_ALLOC_NORECLAIM	0x0080	/* (c) Do not reclaim after failure */
 #define	VM_ALLOC_NOOBJ		0x0100	/* (acg) No associated object */
 #define	VM_ALLOC_NOBUSY		0x0200	/* (acgp) Do not excl busy the page */
 #define	VM_ALLOC_NOCREAT	0x0400	/* (gp) Don't create a page */
@@ -570,6 +571,8 @@
 		pflags |= VM_ALLOC_NOWAIT;
 	if ((malloc_flags & M_WAITOK))
 		pflags |= VM_ALLOC_WAITOK;
+	if ((malloc_flags & M_NORECLAIM))
+		pflags |= VM_ALLOC_NORECLAIM;
 	return (pflags);
 }
 #endif