From: kettenis <kettenis@openbsd.org>
Date: Thu, 2 Jun 2022 18:00:53 +0000 (+0000)
Subject: Take the size of allocation into account when checking the kernel reserve.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b7757c6ebbc9b4d8edce4af8a2a2396996d06f1c;p=openbsd

Take the size of allocation into account when checking the kernel reserve.

ok mpi@
---

diff --git a/sys/uvm/uvm_pmemrange.c b/sys/uvm/uvm_pmemrange.c
index 3e33efdf6d5..7a659efc4bf 100644
--- a/sys/uvm/uvm_pmemrange.c
+++ b/sys/uvm/uvm_pmemrange.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: uvm_pmemrange.c,v 1.61 2021/03/12 14:15:49 jsg Exp $	*/
+/*	$OpenBSD: uvm_pmemrange.c,v 1.62 2022/06/02 18:00:53 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2009, 2010 Ariane van der Steldt <ariane@stack.nl>
@@ -959,7 +959,7 @@ again:
 	 * [3]  only pagedaemon "reserved" pages remain and
 	 *        the requestor isn't the pagedaemon nor the syncer.
 	 */
-	if ((uvmexp.free <= uvmexp.reserve_kernel) &&
+	if ((uvmexp.free <= (uvmexp.reserve_kernel + count)) &&
 	    !(flags & UVM_PLA_USERESERVE)) {
 		uvm_unlock_fpageq();
 		return ENOMEM;