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039a2e800b
Allowing retries for everything is arguably the right thing to do, now that every command type is async read from the start. But it's exposed a few issues around missing check for a retry (whichcca6571381exposed), and the fixup commit for that isn't necessarily 100% sound in terms of iov_iter state. For now, just revert these two commits. This unfortunately then re-opens the fact that -EAGAIN can get bubbled to userspace for some cases where the kernel very well could just sanely retry them. But until we have all the conditions covered around that, we cannot safely enable that. This reverts commitdf604d2ad4. This reverts commitcca6571381. 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 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.