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51cfbed198
If a frame is going to be discarded by driver, this frame is never touched by driver and the cache lines never become dirty obviously, page_pool_recycle_direct() wastes CPU cycles on unnecessary calling of page_pool_dma_sync_for_device() to sync entire frame. page_pool_put_page() with sync_size setting to 0 is the proper method. Signed-off-by: Furong Xu <0x1207@gmail.com> Link: https://patch.msgid.link/20250103093733.3872939-1-0x1207@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.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.