11d33ab6c1
btrfs_extract_ordered_extent is always used to split an ordered_extent and extent_map into two parts, so it doesn't need to deal with a three way split. Simplify it by only allowing for a single split point, and always split out the beginning of the extent, as that is what we'll later need to be able to hold on to a reference to the original ordered_extent that the first part is split off for submission. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Tested-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David Sterba <dsterba@suse.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.