Matthew Wilcox (Oracle)andAndrew Morton bd0dbbb3fd mm: reimplement folio_is_device_coherent()
For callers of folio_is_device_coherent(), we save a folio->page->folio
conversion.  Callers of is_device_coherent_page() simply move the
conversion of page->folio from the implementation of page_pgmap() to
is_device_coherent_page().

Link: https://lkml.kernel.org/r/20250805172307.1302730-10-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-13 16:55:09 -07:00
2025-09-13 16:55:07 -07:00
2025-09-13 16:55:07 -07:00
2025-09-13 16:55:08 -07:00
2025-08-31 15:33:07 -07:00

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.
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