* [PATCH] docs: cgroup-v2: mark memory.pressure and io.pressure as read-write
@ 2026-07-24 2:05 Tao Cui
0 siblings, 0 replies; only message in thread
From: Tao Cui @ 2026-07-24 2:05 UTC (permalink / raw)
To: Tejun Heo, cgroups
Cc: Johannes Weiner, Michal Koutný, Jonathan Corbet, Shuah Khan,
linux-doc, linux-kernel, Tao Cui, cui.tao
From: Tao Cui <cuitao@kylinos.cn>
The cgroup-v2 documentation describes memory.pressure and io.pressure as
"read-only nested-keyed file", but both files accept trigger writes
(cgroup_memory_pressure_write / cgroup_io_pressure_write) and are therefore
read-write. cpu.pressure and irq.pressure are already documented as
read-write, so this also resolves an internal inconsistency.
Signed-off-by: Tao Cui <cuitao@kylinos.cn>
---
Documentation/admin-guide/cgroup-v2.rst | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index f3a3e26854c2..c08ae18afea8 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1930,7 +1930,7 @@ The following nested keys are defined.
is allowed unless memory.swap.max is set to 0.
memory.pressure
- A read-only nested-keyed file.
+ A read-write nested-keyed file.
Shows pressure stall information for memory. See
:ref:`Documentation/accounting/psi.rst <psi>` for details.
@@ -2190,7 +2190,7 @@ IO Interface Files
8:16 rbps=2097152 wbps=max riops=max wiops=max
io.pressure
- A read-only nested-keyed file.
+ A read-write nested-keyed file.
Shows pressure stall information for IO. See
:ref:`Documentation/accounting/psi.rst <psi>` for details.
--
2.43.0
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