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Before trying to allocate a page, gather_surplus_pages() sets up a nodemask for the nodes we can allocate from, but instead of passing the nodemask down the road to the page allocator, it iterates over the nodes within that nodemask right there, meaning that the page allocator will receive a preferred_nid and a null nodemask. This is a problem when using a memory policy, because it might be that the page allocator ends up using a node as a fallback which is not represented in the policy. Avoid that by passing the nodemask directly to the page allocator, so it can filter out fallback nodes that are not part of the nodemask. Link: https://lkml.kernel.org/r/20250415121503.376811-1-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: David Hildenbrand <david@redhat.com> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| fs | ||
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| init | ||
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| kernel | ||
| lib | ||
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| README | ||
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.