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4cf20d4254
Drop the per-VM zapped_obsolete_pages list now that the usage from the defunct mmu_shrinker is gone, and instead use a local list to track pages in kvm_zap_obsolete_pages(), the sole remaining user of zapped_obsolete_pages. Opportunistically add an assertion to verify and document that slots_lock must be held, i.e. that there can only be one active instance of kvm_zap_obsolete_pages() at any given time, and by doing so also prove that using a local list instead of a per-VM list doesn't change any functionality (beyond trivialities like list initialization). Signed-off-by: Vipin Sharma <vipinsh@google.com> Link: https://lore.kernel.org/r/20241101201437.1604321-2-vipinsh@google.com [sean: split to separate patch, write changelog] Signed-off-by: Sean Christopherson <seanjc@google.com>
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 reStructuredText 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.