da0f60df7b
The size meta-data in the prior patch describes the smallest acceptable buffer for the write() interface. Globally check this in the core code. This is necessary in the case of write() methods that have a driver udata to prevent computing a negative udata buffer length. The return code of -ENOSPC is chosen here as some of the handlers already use this code, however many other handler use EINVAL. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.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.