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man: do not say that tasks are threads and processes

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This is confusing because the reader might think that processes and threads are
counted separately. Another issue pointed out in #16363.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-07-06 16:31:57 +02:00
parent 24c8d4d3f4
commit 8dc647fd30
2 changed files with 9 additions and 9 deletions
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10
docs/USER_RECORD.md
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@ -368,11 +368,11 @@ directory is first created, and defaults to `/etc/skel` if not defined.
access mask for the home directory when it is first created.
`tasksMax` → Takes an unsigned 64bit integer indicating the maximum number of
tasks the user may start in parallel during system runtime. This value is
enforced on all tasks (i.e. processes and threads) the user starts or that are
forked off these processes regardless if the change user identity (for example
by setuid binaries/`su`/`sudo` and
similar). [`systemd-logind.service`](https://www.freedesktop.org/software/systemd/man/systemd-logind.service.html)
tasks the user may start in parallel during system runtime. This counts
all tasks (i.e. threads, where each process is at least one thread) the user starts or that are
forked from these processes even if the user identity is changed (for example
by setuid binaries/`su`/`sudo` and similar).
[`systemd-logind.service`](https://www.freedesktop.org/software/systemd/man/systemd-logind.service.html)
enforces this by setting the `TasksMax` slice property for the user's slice
`user-$UID.slice`.

8
man/homectl.xml
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@ -504,10 +504,10 @@
<term><option>--tasks-max=</option><replaceable>TASKS</replaceable></term>
<listitem><para>Takes a non-zero unsigned integer as argument. Configures the maximum numer of tasks
(i.e. processes and threads) the user may have at any given time. This limit applies to all tasks
forked off the user's sessions, even if they change user identity via <citerefentry
project='man-pages'><refentrytitle>su</refentrytitle><manvolnum>1</manvolnum></citerefentry> or a
similar tool. Use <option>--rlimit=LIMIT_NPROC=</option> to place a limit on the tasks actually
(i.e. threads, where each process is at least one thread) the user may have at any given time. This
limit applies to all tasks forked off the user's sessions, even if they change user identity via
<citerefentry project='man-pages'><refentrytitle>su</refentrytitle><manvolnum>1</manvolnum></citerefentry>
or a similar tool. Use <option>--rlimit=LIMIT_NPROC=</option> to place a limit on the tasks actually
running under the UID of the user, thus excluding any child processes that might have changed user
identity. This controls the <varname>TasksMax=</varname> setting of the per-user systemd slice unit
<filename>user-$UID.slice</filename>. See