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976b805c78
Commitd6e0b7fa11("slub: make dead caches discard free slabs immediately") introduced cpu partial flushing for kmemcg caches, based on setting the target cpu_partial to 0 and adding a flushing check in put_cpu_partial(). This code that sets cpu_partial to 0 was later moved byc9fc586403("slab: introduce __kmemcg_cache_deactivate()") and ultimately removed by9855609bde("mm: memcg/slab: use a single set of kmem_caches for all accounted allocations"). However the check and flush in put_cpu_partial() was never removed, although it's effectively a dead code. So this patch removes it. Note thatd6e0b7fa11also added preempt_disable()/enable() to unfreeze_partials() which could be thus also considered unnecessary. But further patches will rely on it, so keep it. Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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.