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7de55b7d6f
Christoph reported that we'll likely trigger the WARN_ON_ONCE() checking that we're not submitting a bvec with REQ_OP_ZONE_APPEND in bio_iov_iter_get_pages() some time ago using zoned btrfs, but I couldn't reproduce it back then. Now Naohiro was able to trigger the bug as well with xfstests generic/095 on a zoned btrfs. There is nothing that prevents bvec submissions via REQ_OP_ZONE_APPEND if the hardware's zone append limit is met. Reported-by: Naohiro Aota <naohiro.aota@wdc.com> Reported-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/10bd414d9326c90cd69029077db63b363854eee5.1616600835.git.johannes.thumshirn@wdc.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.