add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/Documentation/maintainer/pull-requests.rst
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 In order to create the pull request you must first tag the branch that you
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 have just created. It is recommended that you choose a meaningful tag name,
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 in a way that you and others can understand, even after some time.  A good
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-practice is to include in the name an indicator of the sybsystem of origin
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+practice is to include in the name an indicator of the subsystem of origin
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 and the target kernel version.
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 Greg offers the following. A pull request with miscellaneous stuff for