[Bug 106281] New: proc(5) is missing MemAvailable documentation for /proc/meminfo

[bugzilla-daemon-590EEB7GvNiWaY/ihj7yzEB+6BGkLq7r@public.gmane.org]

https://bugzilla.kernel.org/show_bug.cgi?id=106281

            Bug ID: 106281
           Summary: proc(5) is missing MemAvailable documentation for
                    /proc/meminfo
           Product: Documentation
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: man-pages
          Assignee: documentation_man-pages-ztI5WcYan/vQLgFONoPN62D2FQJk+8+b@public.gmane.org
          Reporter: peter-VTkQYDcBqhK7DlmcbJSQ7g@public.gmane.org
        Regression: No

The following fields are undocumented in the proc(5) manual page:

DirectMap2M
DirectMap4k
MemAvailable

(noticed because MemAvailable was missing, the others were found using:)
cut -d: -f1 /proc/meminfo > proc.meminfo;
man proc| awk 'p&&/^ *\/proc\/modules/{exit}
 p&&/%/{print $1} /meminfo$/{p=1}' > proc.5;
grep -H . proc.5 proc.meminfo | tr : ' ' | sort -k2 | uniq -u -f 1 | sort;


This documentation issue exists in man-pages 4.02, but the current git repo is
also missing these fields. MemAvailable is briefly described in free(1) though
(from procps-ng 3.3.11). It is still missing details, how does it interact with
swap, virtio ballooning, tmpfs, etc.?

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