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913fff3145
It was used for calculating the iteration number when the swap allocator wants to scan the whole fragment list. Now the allocator only scans one fragment cluster at a time, so no one uses this counter anymore. Remove it as a cleanup; the performance change is marginal: Build linux kernel using 10G ZRAM, make -j96, defconfig with 2G cgroup memory limit, on top of tmpfs, 64kB mTHP enabled: Before: sys time: 6278.45s After: sys time: 6176.34s Change to 8G ZRAM: Before: sys time: 5572.85s After: sys time: 5531.49s Link: https://lkml.kernel.org/r/20250806161748.76651-3-ryncsn@gmail.com Signed-off-by: Kairui Song <kasong@tencent.com> Reviewed-by: Nhat Pham <nphamcs@gmail.com> Acked-by: Chris Li <chrisl@kernel.org> Cc: Baoquan He <bhe@redhat.com> Cc: Barry Song <baohua@kernel.org> Cc: "Huang, Ying" <ying.huang@linux.alibaba.com> Cc: Kemeng Shi <shikemeng@huaweicloud.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.