[PATCH v2 2/2] Docs/admin-guide/cgroup-v2: fix delay_nsec unit in io.latency doc

From: Tao Cui

Date: Fri Jul 17 2026 - 02:03:36 EST


From: Tao Cui <cuitao@xxxxxxxxxx>

The io.latency doc says the io.stat delay field counts microseconds. The
field is delay_nsec and is reported in nanoseconds. Refer to it by its
real name and correct the unit.

Signed-off-by: Tao Cui <cuitao@xxxxxxxxxx>
---
Documentation/admin-guide/cgroup-v2.rst | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 4386365ef180..755c2a1942ef 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -2305,9 +2305,9 @@ This throttling takes 2 forms:
throttled without possibly adversely affecting higher priority groups. This
includes swapping and metadata IO. These types of IO are allowed to occur
normally, however they are "charged" to the originating group. If the
- originating group is being throttled you will see the use_delay and delay
- fields in io.stat increase. The delay value is how many microseconds that are
- being added to any process that runs in this group. Because this number can
+ originating group is being throttled you will see the use_delay and delay_nsec
+ fields in io.stat increase. The delay_nsec value is how many nanoseconds that
+ are being added to any process that runs in this group. Because this number can
grow quite large if there is a lot of swapping or metadata IO occurring we
limit the individual delay events to 1 second at a time.

--
2.43.0