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3a93daea2f
Pull read_iter updates from Jens Axboe: There are still a few users of fops->read() in the core parts of the fs stack. Which is a shame, since it'd be nice to get rid of the non-iterator parts of down the line, and reclaim that part of the file_operations struct. Outside of moving in that direction as a cleanup, using ->read_iter() enables us to mark them with FMODE_NOWAIT. This is important for users like io_uring, where per-IO nonblocking hints make a difference in how efficiently IO can be done. Those two things are my main motivation for starting this work, with hopefully more to come down the line. All patches have been booted and tested, and the corresponding test cases from ltp have been run. * 'read_iter' of git://git.kernel.dk/linux: (4 commits) signalfd: convert to ->read_iter() userfaultfd: convert to ->read_iter() timerfd: convert to ->read_iter() new helper: copy_to_iter_full() Signed-off-by: Christian Brauner <brauner@kernel.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 reStructuredText 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.