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6b1dba3d8c
iov_iter_bvec() initialises iterators well, no need to pre-zero it beforehand as done in fd_execute_rw_aio(). Compilers can't optimise it out and generate extra code for that (confirmed with assembly). Link: https://lore.kernel.org/r/34cd22d6cec046e3adf402accb1453cc255b9042.1610207523.git.asml.silence@gmail.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.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.