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240dd0e1bb
When clearing bits for a range in an io tree, at clear_state_bit(), we always go search for the next node (through next_state() -> rb_next()) and return it. However if the current extent state record ends at or after the target range passed to btrfs_clear_extent_bit_changeset() or btrfs_convert_extent_bit(), we are just wasting time finding that next node since we won't use it in those functions. Improve on this by skipping the next node search if the current node ends at or after the target range. Reviewed-by: Boris Burkov <boris@bur.io> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> 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 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.