902b62c780
The security.capability xattr is used to implement File Capabilities in recent Linux versions. Capabilities are a fine grained approach to granting executables elevated privileges. eg. /bin/ping can have capabilities cap_net_admin, cap_net_raw+ep instead of being setuid root. This xattr has long been filtered out by llite, initially for stability reasons (b15587), and later over performance concerns as this xattr is read for every file with eg. 'ls --color'. Since LU-2869 xattr's are cached on clients, alleviating most performance concerns. Removing llite's filtering of the security.capability xattr enables using Lustre as a root filesystem, which is used on some large clusters. Signed-off-by: Robin Humble <plaguedbypenguins@gmail.com> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-9562 Reviewed-on: https://review.whamcloud.com/27292 Reviewed-by: John L. Hammond <john.hammond@intel.com> Reviewed-by: Sebastien Buisson <sbuisson@ddn.com> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.