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In hl_release_dmabuf(), ctx is dereferenced after calling hl_ctx_put() to obtain the compute device file. This is safe because the dma-buf object holds a file reference taken in export_dmabuf(), and the file release (which drops another ctx reference) can only happen after we drop that file reference via fput(). Thus, this hl_ctx_put() call cannot be the last one at this point. Add a comment explaining this to avoid confusion. Signed-off-by: Tomer Tayar <tomer.tayar@intel.com> Reviewed-by: Koby Elbaz <koby.elbaz@intel.com> Signed-off-by: Koby Elbaz <koby.elbaz@intel.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.