From 4e7a3af028dfe6b5a4a85c31d670df73c08a0719 Mon Sep 17 00:00:00 2001 From: Chris Down Date: Mon, 30 Sep 2019 18:36:13 +0100 Subject: [PATCH] cgroup: Mark memory protections as explicitly set in transient units A later version of the DefaultMemory{Low,Min} patch changed these to require explicitly setting memory_foo_set, but we only set that in load-fragment, not dbus-cgroup. Without these, we may fall back to either DefaultMemoryFoo or CGROUP_LIMIT_MIN when we really shouldn't. (cherry picked from commit 184e989d7da4648bd36511ffa28a9f2b469589d1) Related: #1763435 --- src/core/dbus-cgroup.c | 64 +++++++++++++++++++++++++++++++----------- 1 file changed, 48 insertions(+), 16 deletions(-) diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c index 39778a8dd4..de85a4851b 100644 --- a/src/core/dbus-cgroup.c +++ b/src/core/dbus-cgroup.c @@ -665,17 +665,33 @@ int bus_cgroup_set_property( if (streq(name, "MemoryAccounting")) return bus_cgroup_set_boolean(u, name, &c->memory_accounting, CGROUP_MASK_MEMORY, message, flags, error); - if (streq(name, "MemoryMin")) - return bus_cgroup_set_memory_protection(u, name, &c->memory_min, message, flags, error); + if (streq(name, "MemoryMin")) { + r = bus_cgroup_set_memory_protection(u, name, &c->memory_min, message, flags, error); + if (r > 0) + c->memory_min_set = true; + return r; + } - if (streq(name, "MemoryLow")) - return bus_cgroup_set_memory_protection(u, name, &c->memory_low, message, flags, error); + if (streq(name, "MemoryLow")) { + r = bus_cgroup_set_memory_protection(u, name, &c->memory_low, message, flags, error); + if (r > 0) + c->memory_low_set = true; + return r; + } - if (streq(name, "DefaultMemoryMin")) - return bus_cgroup_set_memory_protection(u, name, &c->default_memory_min, message, flags, error); + if (streq(name, "DefaultMemoryMin")) { + r = bus_cgroup_set_memory_protection(u, name, &c->default_memory_min, message, flags, error); + if (r > 0) + c->default_memory_min_set = true; + return r; + } - if (streq(name, "DefaultMemoryLow")) - return bus_cgroup_set_memory_protection(u, name, &c->default_memory_low, message, flags, error); + if (streq(name, "DefaultMemoryLow")) { + r = bus_cgroup_set_memory_protection(u, name, &c->default_memory_low, message, flags, error); + if (r > 0) + c->default_memory_low_set = true; + return r; + } if (streq(name, "MemoryHigh")) return bus_cgroup_set_memory(u, name, &c->memory_high, message, flags, error); @@ -689,17 +705,33 @@ int bus_cgroup_set_property( if (streq(name, "MemoryLimit")) return bus_cgroup_set_memory(u, name, &c->memory_limit, message, flags, error); - if (streq(name, "MemoryMinScale")) - return bus_cgroup_set_memory_protection_scale(u, name, &c->memory_min, message, flags, error); + if (streq(name, "MemoryMinScale")) { + r = bus_cgroup_set_memory_protection_scale(u, name, &c->memory_min, message, flags, error); + if (r > 0) + c->memory_min_set = true; + return r; + } - if (streq(name, "MemoryLowScale")) - return bus_cgroup_set_memory_protection_scale(u, name, &c->memory_low, message, flags, error); + if (streq(name, "MemoryLowScale")) { + r = bus_cgroup_set_memory_protection_scale(u, name, &c->memory_low, message, flags, error); + if (r > 0) + c->memory_low_set = true; + return r; + } - if (streq(name, "DefaultMemoryMinScale")) - return bus_cgroup_set_memory_protection_scale(u, name, &c->default_memory_min, message, flags, error); + if (streq(name, "DefaultMemoryMinScale")) { + r = bus_cgroup_set_memory_protection_scale(u, name, &c->default_memory_min, message, flags, error); + if (r > 0) + c->default_memory_min_set = true; + return r; + } - if (streq(name, "DefaultMemoryLowScale")) - return bus_cgroup_set_memory_protection_scale(u, name, &c->default_memory_low, message, flags, error); + if (streq(name, "DefaultMemoryLowScale")) { + r = bus_cgroup_set_memory_protection_scale(u, name, &c->default_memory_low, message, flags, error); + if (r > 0) + c->default_memory_low_set = true; + return r; + } if (streq(name, "MemoryHighScale")) return bus_cgroup_set_memory_scale(u, name, &c->memory_high, message, flags, error);