From 9697d24cc223028555629af325af8607de350d06 Mon Sep 17 00:00:00 2001
Message-Id: <9697d24cc223028555629af325af8607de350d06@dist-git>
From: Pavel Hrdina <phrdina@redhat.com>
Date: Mon, 1 Jul 2019 17:07:39 +0200
Subject: [PATCH] vircgroup: introduce virCgroupV2SetMemory
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Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
(cherry picked from commit 63bd23a6ad17331cdc31bc07fd8b21a96d4b2eb0)

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1689297

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Message-Id: <d2076f596f9e8b58571e19334f23e295f72a2ee5.1561993100.git.phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
 src/util/vircgroupv2.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c
index 52d31925c2..1b7215d98b 100644
--- a/src/util/vircgroupv2.c
+++ b/src/util/vircgroupv2.c
@@ -1015,6 +1015,33 @@ virCgroupV2GetBlkioDeviceWriteBps(virCgroupPtr group,
 }
 
 
+static int
+virCgroupV2SetMemory(virCgroupPtr group,
+                     unsigned long long kb)
+{
+    unsigned long long maxkb = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
+
+    if (kb > maxkb) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("Memory '%llu' must be less than %llu"),
+                       kb, maxkb);
+        return -1;
+    }
+
+    if (kb == maxkb) {
+        return virCgroupSetValueStr(group,
+                                    VIR_CGROUP_CONTROLLER_MEMORY,
+                                    "memory.max",
+                                    "max");
+    } else {
+        return virCgroupSetValueU64(group,
+                                    VIR_CGROUP_CONTROLLER_MEMORY,
+                                    "memory.max",
+                                    kb << 10);
+    }
+}
+
+
 virCgroupBackend virCgroupV2Backend = {
     .type = VIR_CGROUP_BACKEND_TYPE_V2,
 
@@ -1051,6 +1078,8 @@ virCgroupBackend virCgroupV2Backend = {
     .getBlkioDeviceReadBps = virCgroupV2GetBlkioDeviceReadBps,
     .setBlkioDeviceWriteBps = virCgroupV2SetBlkioDeviceWriteBps,
     .getBlkioDeviceWriteBps = virCgroupV2GetBlkioDeviceWriteBps,
+
+    .setMemory = virCgroupV2SetMemory,
 };
 
 
-- 
2.22.0