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41fb0fabc4
Comments in file include/linux/shrinker.h says that `count_objects` of `struct shrinker` should return SHRINK_EMPTY when there are no objects to free. > If there are no objects to free, it should return SHRINK_EMPTY, > while 0 is returned in cases of the number of freeable items cannot > be determined or shrinker should skip this cache for this time > (e.g., their number is below shrinkable limit). Signed-off-by: Chen Linxuan <chenlinxuan@uniontech.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/149E6E64B5B6B5E8+20250116083303.199817-1-chenlinxuan@uniontech.com [ Gao Xiang: should have no impact since it's not memcg-aware. ] Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> |
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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.