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Newer versions of Hyper-V allow reporting unused guest pages in chunks smaller than 2 Mbytes. Using smaller chunks allows reporting more unused guest pages, but with increased overhead in the finding the small chunks. To make this tradeoff configurable, use the existing page_reporting_order module parameter to control the reporting order. Drop and refine checks that restricted the minimun page reporting order to 2Mbytes size pages. Add appropriate checks to make sure the underlying Hyper-V versions support cold discard hints of any order (and not just starting from 9) Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1664517699-1085-3-git-send-email-shradhagupta@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.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 Restructured Text 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.