diff options
| -rw-r--r-- | Documentation/admin-guide/cgroup-v1/memory.rst | 2 | ||||
| -rw-r--r-- | mm/memcontrol.c | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/admin-guide/cgroup-v1/memory.rst b/Documentation/admin-guide/cgroup-v1/memory.rst index 34911ce5e4b5..2524061836ac 100644 --- a/Documentation/admin-guide/cgroup-v1/memory.rst +++ b/Documentation/admin-guide/cgroup-v1/memory.rst @@ -91,6 +91,8 @@ Brief summary of control files. memory.oom_control set/show oom controls. memory.numa_stat show the number of memory usage per numa node + memory.kmem.limit_in_bytes This knob is deprecated and writing to + it will return -ENOTSUPP. memory.kmem.usage_in_bytes show current kernel memory allocation memory.kmem.failcnt show the number of kernel memory usage hits limits diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 0a403b241718..67b6d8238b3e 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3841,6 +3841,10 @@ static ssize_t mem_cgroup_write(struct kernfs_open_file *of, case _MEMSWAP: ret = mem_cgroup_resize_max(memcg, nr_pages, true); break; + case _KMEM: + /* kmem.limit_in_bytes is deprecated. */ + ret = -EOPNOTSUPP; + break; case _TCP: ret = memcg_update_tcp_max(memcg, nr_pages); break; @@ -5052,6 +5056,12 @@ static struct cftype mem_cgroup_legacy_files[] = { }, #endif { + .name = "kmem.limit_in_bytes", + .private = MEMFILE_PRIVATE(_KMEM, RES_LIMIT), + .write = mem_cgroup_write, + .read_u64 = mem_cgroup_read_u64, + }, + { .name = "kmem.usage_in_bytes", .private = MEMFILE_PRIVATE(_KMEM, RES_USAGE), .read_u64 = mem_cgroup_read_u64, |