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There are many different scenarios such as fstrim, umount, urgent or background where we will issue discards, actually, they need use different policy in aspect of io aware, discard granularity, delay interval and so on. But now they just share one common discard policy, so there will be race when changing policy in between these scenarios, the interference of changing discard policy will be very serious. This patch changes to split discard policy for different scenarios. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.