提交 1603c8d1 编写于 作者: C Chris Down 提交者: Linus Torvalds

Documentation/admin-guide/cgroup-v2.rst: document why inactive_X + active_X may not equal X

This has confused a significant number of people using cgroups inside
Facebook, and some of those outside as well judging by posts like
this[0] (although it's not a problem unique to cgroup v2).

If shmem handling in particular becomes more coherent at some point in
the future -- although that seems unlikely now -- we can change the
wording here.

[0]: https://unix.stackexchange.com/q/525092/10762

Link: http://lkml.kernel.org/r/20191111144958.GA11914@chrisdown.nameSigned-off-by: NChris Down <chris@chrisdown.name>
Acked-by: NMichal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 fa40d1ee
...@@ -1288,7 +1288,12 @@ PAGE_SIZE multiple when read back. ...@@ -1288,7 +1288,12 @@ PAGE_SIZE multiple when read back.
inactive_anon, active_anon, inactive_file, active_file, unevictable inactive_anon, active_anon, inactive_file, active_file, unevictable
Amount of memory, swap-backed and filesystem-backed, Amount of memory, swap-backed and filesystem-backed,
on the internal memory management lists used by the on the internal memory management lists used by the
page reclaim algorithm page reclaim algorithm.
As these represent internal list state (eg. shmem pages are on anon
memory management lists), inactive_foo + active_foo may not be equal to
the value for the foo counter, since the foo counter is type-based, not
list-based.
slab_reclaimable slab_reclaimable
Part of "slab" that might be reclaimed, such as Part of "slab" that might be reclaimed, such as
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册