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d80172c2d8
Overlayfs works sub-optimally with upper fs that has no xattr/d_type/ RENAME_WHITEOUT support. We should basically deprecate support for those filesystems, but so far, we only issue a warning and don't fail the mount for the sake of backward compat. Some features are already being disabled with no xattr support. For newly supported remote upper fs, we do not need to worry about backward compatibility, so we can fail the mount if upper fs is a sub-optimal filesystem. This reduces the in-tree remote filesystems supported as upper to just FUSE, for which the remote upper fs support was added. 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.