af5f2396b6
Do all the logic to set the mode during mount options parsing and do not keep the option string around. Use a constant_table to translate from enum redirect mode to string in preperation for new mount api option parsing. The mount option "off" is translated to either "follow" or "nofollow", depending on the "redirect_always_follow" build/module config, so in effect, there are only three possible redirect modes. This results in a minor change to the string that is displayed in show_options() - when redirect_dir is enabled by default and the user mounts with the option "redirect_dir=off", instead of displaying the mode "redirect_dir=off" in show_options(), the displayed mode will be either "redirect_dir=follow" or "redirect_dir=nofollow", depending on the value of "redirect_always_follow" build/module config. The displayed mode reflects the effective mode, so mounting overlayfs again with the dispalyed redirect_dir option will result with the same effective and displayed mode. Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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 Restructured Text 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.