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From 69dbbc29f26569fd09f0109e6fbebde98c0c8567 Mon Sep 17 00:00:00 2001
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From: Chris Down <chris@chrisdown.name>
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Date: Tue, 16 Apr 2019 18:44:05 +0100
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Subject: [PATCH] unit: Add DefaultMemoryMin
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(cherry picked from commit 7ad5439e0663e39e36619957fa37eefe8026bcab)
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Related: #1763435
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---
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 src/core/cgroup.c         |  3 +++
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 src/core/cgroup.h         |  4 ++++
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 src/core/dbus-cgroup.c    |  6 ++++++
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 src/core/load-fragment.c  | 11 +++++++++--
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 src/systemctl/systemctl.c |  2 ++
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 5 files changed, 24 insertions(+), 2 deletions(-)
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diff --git a/src/core/cgroup.c b/src/core/cgroup.c
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index 46a89ff5e1..d40f9cbc2a 100644
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--- a/src/core/cgroup.c
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+++ b/src/core/cgroup.c
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@@ -220,6 +220,7 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
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                 "%sStartupIOWeight=%" PRIu64 "\n"
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                 "%sBlockIOWeight=%" PRIu64 "\n"
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                 "%sStartupBlockIOWeight=%" PRIu64 "\n"
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+                "%sDefaultMemoryMin=%" PRIu64 "\n"
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                 "%sDefaultMemoryLow=%" PRIu64 "\n"
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                 "%sMemoryMin=%" PRIu64 "\n"
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                 "%sMemoryLow=%" PRIu64 "\n"
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@@ -248,6 +249,7 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
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                 prefix, c->startup_io_weight,
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                 prefix, c->blockio_weight,
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                 prefix, c->startup_blockio_weight,
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+                prefix, c->default_memory_min,
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                 prefix, c->default_memory_low,
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                 prefix, c->memory_min,
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                 prefix, c->memory_low,
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@@ -402,6 +404,7 @@ int cgroup_add_device_allow(CGroupContext *c, const char *dev, const char *mode)
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 }
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 UNIT_DEFINE_ANCESTOR_MEMORY_LOOKUP(memory_low);
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+UNIT_DEFINE_ANCESTOR_MEMORY_LOOKUP(memory_min);
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 static int lookup_block_device(const char *p, dev_t *ret) {
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         struct stat st;
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diff --git a/src/core/cgroup.h b/src/core/cgroup.h
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index a263d6a169..976224336d 100644
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--- a/src/core/cgroup.h
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+++ b/src/core/cgroup.h
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@@ -95,6 +95,7 @@ struct CGroupContext {
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         LIST_HEAD(CGroupIODeviceLimit, io_device_limits);
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         LIST_HEAD(CGroupIODeviceLatency, io_device_latencies);
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+        uint64_t default_memory_min;
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         uint64_t default_memory_low;
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         uint64_t memory_min;
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         uint64_t memory_low;
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@@ -102,7 +103,9 @@ struct CGroupContext {
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         uint64_t memory_max;
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         uint64_t memory_swap_max;
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+        bool default_memory_min_set;
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         bool default_memory_low_set;
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+        bool memory_min_set;
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         bool memory_low_set;
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         LIST_HEAD(IPAddressAccessItem, ip_address_allow);
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@@ -195,6 +198,7 @@ Unit *manager_get_unit_by_cgroup(Manager *m, const char *cgroup);
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 Unit *manager_get_unit_by_pid_cgroup(Manager *m, pid_t pid);
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 Unit* manager_get_unit_by_pid(Manager *m, pid_t pid);
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+uint64_t unit_get_ancestor_memory_min(Unit *u);
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 uint64_t unit_get_ancestor_memory_low(Unit *u);
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 int unit_search_main_pid(Unit *u, pid_t *ret);
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diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c
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index 2115d43b0c..e1278c317a 100644
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--- a/src/core/dbus-cgroup.c
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+++ b/src/core/dbus-cgroup.c
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@@ -669,6 +669,9 @@ int bus_cgroup_set_property(
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         if (streq(name, "MemoryLow"))
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                 return bus_cgroup_set_memory(u, name, &c->memory_low, message, flags, error);
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+        if (streq(name, "DefaultMemoryMin"))
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+                return bus_cgroup_set_memory(u, name, &c->default_memory_min, message, flags, error);
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+
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         if (streq(name, "DefaultMemoryLow"))
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                 return bus_cgroup_set_memory(u, name, &c->default_memory_low, message, flags, error);
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@@ -690,6 +693,9 @@ int bus_cgroup_set_property(
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         if (streq(name, "MemoryLowScale"))
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                 return bus_cgroup_set_memory_scale(u, name, &c->memory_low, message, flags, error);
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+        if (streq(name, "DefaultMemoryMinScale"))
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+                return bus_cgroup_set_memory_scale(u, name, &c->default_memory_min, message, flags, error);
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+
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         if (streq(name, "DefaultMemoryLowScale"))
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                 return bus_cgroup_set_memory_scale(u, name, &c->default_memory_low, message, flags, error);
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diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
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index 20faed02ad..3b8ee6b124 100644
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--- a/src/core/load-fragment.c
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+++ b/src/core/load-fragment.c
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@@ -3102,9 +3102,16 @@ int config_parse_memory_limit(
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                         c->default_memory_low = CGROUP_LIMIT_MIN;
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                 else
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                         c->default_memory_low = bytes;
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-        } else if (streq(lvalue, "MemoryMin"))
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+        } else if (streq(lvalue, "DefaultMemoryMin")) {
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+                c->default_memory_min_set = true;
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+                if (isempty(rvalue))
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+                        c->default_memory_min = CGROUP_LIMIT_MIN;
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+                else
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+                        c->default_memory_min = bytes;
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+        } else if (streq(lvalue, "MemoryMin")) {
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                 c->memory_min = bytes;
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-        else if (streq(lvalue, "MemoryLow")) {
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+                c->memory_min_set = true;
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+        } else if (streq(lvalue, "MemoryLow")) {
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                 c->memory_low = bytes;
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                 c->memory_low_set = true;
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         } else if (streq(lvalue, "MemoryHigh"))
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diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
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index 763ca0c6b7..e0db97e339 100644
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--- a/src/systemctl/systemctl.c
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+++ b/src/systemctl/systemctl.c
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@@ -3918,6 +3918,7 @@ typedef struct UnitStatusInfo {
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         uint64_t ip_ingress_bytes;
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         uint64_t ip_egress_bytes;
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+        uint64_t default_memory_min;
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         uint64_t default_memory_low;
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         LIST_HEAD(ExecStatusInfo, exec);
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@@ -5030,6 +5031,7 @@ static int show_one(
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                 { "Where",                          "s",              NULL,           offsetof(UnitStatusInfo, where)                             },
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                 { "What",                           "s",              NULL,           offsetof(UnitStatusInfo, what)                              },
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                 { "MemoryCurrent",                  "t",              NULL,           offsetof(UnitStatusInfo, memory_current)                    },
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+                { "DefaultMemoryMin",               "t",              NULL,           offsetof(UnitStatusInfo, default_memory_min)                },
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                 { "DefaultMemoryLow",               "t",              NULL,           offsetof(UnitStatusInfo, default_memory_low)                },
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                 { "MemoryMin",                      "t",              NULL,           offsetof(UnitStatusInfo, memory_min)                        },
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                 { "MemoryLow",                      "t",              NULL,           offsetof(UnitStatusInfo, memory_low)                        },