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Miaohe Lin
e6be37b2e7
Since commit99cb0dbd47("mm,thp: add read-only THP support for (non-shmem) FS"), read-only THP file mapping is supported. But it forgot to add checking for it in transparent_hugepage_enabled(). To fix it, we add checking for read-only THP file mapping and also introduce helper transhuge_vma_enabled() to check whether thp is enabled for specified vma to reduce duplicated code. We rename transparent_hugepage_enabled to transparent_hugepage_active to make the code easier to follow as suggested by David Hildenbrand. [[email protected]: define transhuge_vma_enabled next to transhuge_vma_suitable] Link: https://lkml.kernel.org/r/[email protected] Link: https://lkml.kernel.org/r/[email protected] Fixes:99cb0dbd47("mm,thp: add read-only THP support for (non-shmem) FS") Signed-off-by: Miaohe Lin <[email protected]> Reviewed-by: Yang Shi <[email protected]> Cc: Alexey Dobriyan <[email protected]> Cc: "Aneesh Kumar K . V" <[email protected]> Cc: Anshuman Khandual <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Hugh Dickins <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Minchan Kim <[email protected]> Cc: Ralph Campbell <[email protected]> Cc: Rik van Riel <[email protected]> Cc: Song Liu <[email protected]> Cc: William Kucharski <[email protected]> Cc: Zi Yan <[email protected]> Cc: Mike Kravetz <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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 Restructured Text 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.