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0befb8511e
In do_promote(), when the glock had no strong holders, we were accidentally calling demote_incompat_holders() with new_gh == NULL, so no weak holders were considered incompatible. Instead, the new holder should have been passed in. For doing that, the HIF_HOLDER flag needs to be set in new_gh to prevent may_grant() from complaining. This means that the new holder will now be recognized as a current holder, so skip over it explicitly in demote_incompat_holders() to prevent it from being dequeued. To further clarify things, we can now rename new_gh to current_gh in demote_incompat_holders(); after all, the HIF_HOLDER flag is already set, which means the new holder is already a current holder. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> |
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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.