3831761eb8
Currently nvme reconfigures discard for every disk revalidation. This is problematic because any O_WRONLY or O_RDWR open will trigger a partition scan through udev/systemd, and we will reconfigure discard. This blows away any user settings, like discard_max_bytes. Only re-configure the user settable settings if we need to. Signed-off-by: Jens Axboe <axboe@kernel.dk> [removed redundant queue flag setting] Signed-off-by: Keith Busch <keith.busch@intel.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.
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.