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NeilBrown says: ==================== Fix rhashtable bit-locking for m68k As reported by Guenter Roeck, the new rhashtable bit-locking doesn't work on m68k as it only requires 2-byte alignment, so BIT(1) is addresses is not unused. We current use BIT(0) to identify a NULLS marker, but that is only needed in ->next pointers. The bucket head does not need a NULLS marker, so the lsb there can be used for locking. the first 4 patches make some small improvements and re-arrange some code. The final patch converts to using only BIT(0) for these two different special purposes. I had previously suggested dropping the series until I fix it. Given that this was fairly easy, I retract that I think it best simply to add these patches to fix the code. ==================== Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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.