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enum pageblock_bits defines the meaning of pageblock bits. Currently PB_migratetype_bits says the lowest 3 bits represents migratetype and PB_migrate_end/MIGRATETYPE_MASK's definition rely on it with magical computation. Remove the definition of PB_migratetype_bits/PB_migrate_end. Use PB_migrate_[0|1|2] to represent lowest bits for migratetype. Then we can simplify related definition. Also, MIGRATETYPE_AND_ISO_MASK is MIGRATETYPE_MASK add isolation bit. Use MIGRATETYPE_MASK in the definition of MIGRATETYPE_AND_ISO_MASK looks cleaner. No functional change intended. Link: https://lkml.kernel.org/r/20250827070105.16864-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Suggested-by: David Hildenbrand <david@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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 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.