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This adds the overflow processing for large CQE's. This adds two parameters to the io_cqring_event_overflow function and uses these fields to initialize the large CQE fields. Allocate enough space for large CQE's in the overflow structue. If no large CQE's are used, the size of the allocation is unchanged. The cqe field can have a different size depending if its a large CQE or not. To be able to allocate different sizes, the two fields in the structure are re-ordered. Co-developed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Stefan Roesch <shr@fb.com> Reviewed-by: Kanchan Joshi <joshi.k@samsung.com> Link: https://lore.kernel.org/r/20220426182134.136504-9-shr@fb.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.