Mike Snitzer 06eed768ea dm: avoid needless dm_io access if all IO accounting is disabled
Update dm_io_acct() to eliminate most dm_io struct accesses if both
block core's IO stats and dm-stats are disabled.

Signed-off-by: Mike Snitzer <snitzer@kernel.org>
2023-06-16 18:24:13 -04:00
2023-05-14 12:51:40 -07:00

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.
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