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e87b881489
Currently, zswap_store() checks zswap_same_filled_pages_enabled, kmaps the folio, then calls zswap_is_page_same_filled() to check the folio contents. Move this logic into zswap_is_page_same_filled() as well (and rename it to use 'folio' while we are at it). This makes zswap_store() cleaner, and makes following changes to that logic contained within the helper. While we are at it: - Rename the insert_entry label to store_entry to match xa_store(). - Add comment headers for same-filled functions and the main API functions (load, store, invalidate, swapon, swapoff). No functional change intended. Link: https://lkml.kernel.org/r/20240413022407.785696-4-yosryahmed@google.com Signed-off-by: Yosry Ahmed <yosryahmed@google.com> Reviewed-by: Nhat Pham <nphamcs@gmail.com> Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: "Maciej S. Szmigiero" <mail@maciej.szmigiero.name> 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.