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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-20 12:57:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-23 11:11:12 +0200 |
| commit | 45ea58f9dbf8faecc733e4f1db06a55fc0e7e6a7 (patch) | |
| tree | 33b6e68a3034417a2c63e090af38cad17c82c033 /mm | |
| parent | 4422080e777e3fa740e2920fe4de53cfad7fcef2 (diff) | |
| download | linux-45ea58f9dbf8faecc733e4f1db06a55fc0e7e6a7.tar.gz | |
Revert "memcg: drop kmem.limit_in_bytes"
This reverts commit 21ef9e11205fca43785eecf7d4a99528d4de5701 which is
commit 86327e8eb94c52eca4f93cfece2e29d1bf52acbf upstream.
It breaks existing runc systems, as the tool always thinks the file
should be present.
Reported-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Link: https://lore.kernel.org/r/20230920081101.GA12096@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net
Cc: Michal Hocko <mhocko@suse.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 0a403b241718ed..67b6d8238b3ed6 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, |