[src/trunk]: src/sys/arch/xen/xen Call extent_alloc_subregion() with EX_MALLO...

[bouyer <bouyer%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/af45447e68df
branches:  trunk
changeset: 369803:af45447e68df
user:      bouyer <bouyer%NetBSD.org@localhost>
date:      Thu Sep 01 16:28:08 2022 +0000

description:
Call extent_alloc_subregion() with EX_MALLOCOK; under heavy I/O load we need
lots of them and the preallocatted extent descriptors are not enough.

diffstat:

 sys/arch/xen/xen/xenmem.c |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (34 lines):

diff -r b365ed8fa1be -r af45447e68df sys/arch/xen/xen/xenmem.c
--- a/sys/arch/xen/xen/xenmem.c Thu Sep 01 16:25:18 2022 +0000
+++ b/sys/arch/xen/xen/xenmem.c Thu Sep 01 16:28:08 2022 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: xenmem.c,v 1.2 2022/08/31 12:53:27 bouyer Exp $ */
+/* $NetBSD: xenmem.c,v 1.3 2022/09/01 16:28:08 bouyer Exp $ */
 /*
  * Copyright (c) 2022 Manuel Bouyer.
  *
@@ -25,7 +25,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xenmem.c,v 1.2 2022/08/31 12:53:27 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xenmem.c,v 1.3 2022/09/01 16:28:08 bouyer Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -57,11 +57,13 @@
 #ifdef _LP64
        /* allocate above the 4Gb range to not collide wit devices */
        error = extent_alloc_subregion(XENMEM_EX, 0x100000000UL, MAXIOMEM,
-           size, align, 0, waitok ? (EX_WAITSPACE | EX_WAITOK) : EX_NOWAIT,
+           size, align, 0,
+           (waitok ? (EX_WAITSPACE | EX_WAITOK) : EX_NOWAIT) | EX_MALLOCOK,
            &result);
 #else
        error = extent_alloc(XENMEM_EX, size, align, 0,
-           waitok ? (EX_WAITSPACE | EX_WAITOK) : EX_NOWAIT, &result);
+           waitok ? ((EX_WAITSPACE | EX_WAITOK) : EX_NOWAIT) | EX_MALLOCOK,
+           &result);
 #endif
        if (error) {
                printf("xenmem_alloc_pa: failed %d\n", error);