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Dmitry Osipenko 30b5144ca4 dma-buf/heaps: Don't assert held reservation lock for dma-buf mmapping
Don't assert held dma-buf reservation lock on memory mapping of exported
buffer.

We're going to change dma-buf mmap() locking policy such that exporters
will have to handle the lock. The previous locking policy caused deadlock
problem for DRM drivers in a case of self-imported dma-bufs once these
drivers are moved to use reservation lock universally. The problem
solved by moving the lock down to exporters. This patch prepares dma-buf
heaps for the locking policy update.

Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-3-dmitry.osipenko@collabora.com
2023-06-21 20:22:20 +03:00
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Documentation Merge drm/drm-next into drm-misc-next 2023-06-19 16:33:14 +02:00
drivers dma-buf/heaps: Don't assert held reservation lock for dma-buf mmapping 2023-06-21 20:22:20 +03:00
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include Merge drm/drm-next into drm-misc-next 2023-06-19 16:33:14 +02:00
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MAINTAINERS MAINTAINERS: Add myself as reviewer for mgag200 and ast drivers 2023-06-21 17:09:00 +02:00
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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.