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67fe7487fe
DMA-buf core has its own refcounting of vmaps, use it instead of drm-shmem counting. This change prepares drm-shmem for addition of memory shrinker support where drm-shmem will use a single dma-buf reservation lock for all operations performed over dma-bufs. Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://lore.kernel.org/all/20230108210445.3948344-7-dmitry.osipenko@collabora.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.