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96549d56b8
Three pmd walk functions in vaddr.c are using pmd_trans_huge() and pmd_lock() to handle THPs. Simplify the code by replacing the two function calls with a single pmd_trans_huge_lock() call. Note that this cleanup is not only reducing the lines of code, but also simplifies code execution flows for migration entries case, as kindly explained [1] by Hugh, who suggested this cleanup. [sj@kernel.org: provide lvalue to pmd_present()] Link: https://lkml.kernel.org/r/20251117154415.11041-1-sj@kernel.org Link: https://lkml.kernel.org/r/20251112154114.66053-4-sj@kernel.org Link: https://lore.kernel.org/296c2b3f-6748-158f-b85d-2952165c0588@google.com [1] Signed-off-by: SeongJae Park <sj@kernel.org> Suggested-by: Hugh Dickins <hughd@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Justin Stitt <justinstitt@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: kernel test robot <lkp@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| README | ||
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.