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It improves the performance and lifespan of some storages by enabling the operating system to inform the drive when data blocks are no longer in use, allowing for more efficient garbage collection and wear leveling. To disable it, use the nodiscard mount option. Change-Id: I215ca87c00f32908c1ae233bc9304e7b647f60ea Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.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 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.
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