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We free objects in bulk after they wait for their RCU grace period. Currently, we take struct_mutex and unbind all the objects. This can lead to a long lock duration during which time those objects have their pages unfreeable (i.e. the shrinker is prevented from reaping those pages). If we only process a single object under the struct_mutex and then free the pages, the number of objects locked away from the shrinker is minimal and we allow regular clients better access to struct_mutex if they need it. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171013202621.7276-9-chris@chris-wilson.co.uk |
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| README | ||
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.