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62a8a85be8
With index=on, let index dir act as the work dir for copy up and cleanups. This will help implementing whiteout inode sharing. We still create the "work" dir on mount regardless of index=on and it is used to test the features supported by upper fs. One reason is that before the feature tests, we do not know if index could be enabled or not. The reason we do not use "index" directory also as workdir with index=off is because the existence of the "index" directory acts as a simple persistent signal that index was enabled on this filesystem and tools may want to use that signal. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.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.