On Wed, Feb 01, 2023 at 12:52:27PM +0800, Hou Tao wrote: > The following numerical values are associated with the I/O priority policies: > > -+-------------+---+ > -| no-change | 0 | > -+-------------+---+ > -| none-to-rt | 1 | > -+-------------+---+ > -| rt-to-be | 2 | > -+-------------+---+ > -| all-to-idle | 3 | > -+-------------+---+ > + > ++---------------+---------+-----+ > +| policy | inst | num | > ++---------------+---------+-----+ > +| no-change | demote | 0 | > ++---------------+---------+-----+ > +| none-to-rt | demote | 1 | > ++---------------+---------+-----+ > +| rt-to-be | demote | 2 | > ++---------------+---------+-----+ > +| idle | demote | 3 | > ++---------------+---------+-----+ > +| promote-to-rt | promote | 1 | > ++---------------+---------+-----+ > The first row should have been header row: ---- >8 ---- diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index e0b9f73ef62a9e..55f9b579716564 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2048,7 +2048,7 @@ The following numerical values are associated with the I/O priority policies: +---------------+---------+-----+ | policy | inst | num | -+---------------+---------+-----+ ++===============+=========+=====+ | no-change | demote | 0 | +---------------+---------+-----+ | none-to-rt | demote | 1 | > @@ -2064,9 +2074,13 @@ The numerical value that corresponds to each I/O priority class is as follows: > > The algorithm to set the I/O priority class for a request is as follows: > > -- Translate the I/O priority class policy into a number. > -- Change the request I/O priority class into the maximum of the I/O priority > - class policy number and the numerical I/O priority class. > +-- Translate the I/O priority class policy into an instruction and a number > +-- If the instruction is demotion, change the request I/O priority class > +- into the maximum of the I/O priority class policy number and the numerical > +- I/O priority class. > +-- If the instruction is promotion, change the request I/O priority class > +- into the minimum of the I/O priority class policy number and the numerical > +- I/O priority class. > Remove the excessive bullet list marker or the list above become paragraph instead: ---- >8 ---- diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index 55f9b579716564..c3f16386c47bdf 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2074,12 +2074,12 @@ The numerical value that corresponds to each I/O priority class is as follows: The algorithm to set the I/O priority class for a request is as follows: --- Translate the I/O priority class policy into an instruction and a number --- If the instruction is demotion, change the request I/O priority class -- into the maximum of the I/O priority class policy number and the numerical -- I/O priority class. --- If the instruction is promotion, change the request I/O priority class -- into the minimum of the I/O priority class policy number and the numerical +- Translate the I/O priority class policy into an instruction-number pair. +- If the instruction is demotion, change the request I/O priority class + into the maximum of the I/O priority class policy number and the numerical + I/O priority class. +- If the instruction is promotion, change the request I/O priority class + into the minimum of the I/O priority class policy number and the numerical - I/O priority class. PID Thanks. -- An old man doll... just what I always wanted! - Clara
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