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1a867d729f
It's always ->mnt_parent of the first one. What the function does is making a mount (with already set parent and mountpoint) visible - in mount hash and in the parent's list of children. IOW, it takes the existing rootwards linkage and sets the matching crownwards linkage. Renamed to make_visible(), while we are at it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.