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97db889b96
We don't support large entries which expand two more level xa_node in split. For case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order", we also need two level of xa_node to expand. Distinguish entry as large entry in case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order". As max order of folio in pagecache (MAX_PAGECACHE_ORDER) is <= (XA_CHUNK_SHIFT * 2 - 1), this change is more likely a cleanup... Link: https://lkml.kernel.org/r/20241213122523.12764-4-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Mattew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| fs | ||
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| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
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| .clang-format | ||
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| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
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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.