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497c726ff8
There's no need to subtract 1 from path->slots[0] and then decrement the
slot, we can reduce the generated assembly code by decrementing the slot
and then use it.
Module size before:
$ size fs/btrfs/btrfs.ko
text data bss dec hex filename
1846220 162998 16136 2025354 1ee78a fs/btrfs/btrfs.ko
Module size after:
$ size fs/btrfs/btrfs.ko
text data bss dec hex filename
1846204 162998 16136 2025338 1ee77a fs/btrfs/btrfs.ko
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.