How is "Available" calculated for tmpfs?

Solution Unverified - Updated -

Issue

  • How available /tmp is calculated

  • /tmp should 950m free and MemFree only shows 642M free. We would like to know how free space in /tmp is calculated base on the free memory.

#  more /proc/meminfo
MemTotal:       264494360 kB
MemFree:          642216 kB
...

# df /tmp
Filesystem           1K-blocks      Used Available Use% Mounted on
tmpfs                  2097152   1147068    950084  55% /tmp

Environment

  • Red Hat Enterprise Linux [ALL]

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