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6a559ecd6e
This adds support for pre-trained zstd dictionaries [1] Dictionary is setup in params once (per-comp) and loaded to Cctx and Dctx by reference, so we don't allocate extra memory. TEST ==== *** zstd /sys/block/zram0/mm_stat 1750654976 504565092 514203648 0 514203648 1 0 34204 34204 *** zstd dict=/etc/zstd-dict-amd64 /sys/block/zram0/mm_stat 1750638592 465851259 475373568 0 475373568 1 0 34185 34185 *** zstd level=8 dict=/etc/zstd-dict-amd64 /sys/block/zram0/mm_stat 1750642688 430765171 439955456 0 439955456 1 0 34185 34185 [1] https://github.com/facebook/zstd/blob/dev/programs/zstd.1.md#dictionary-builder Link: https://lkml.kernel.org/r/20240902105656.1383858-23-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.