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The mlock_vma_folio() function requires the page table lock to be held in order to safely mlock the folio. However, folio_referenced_one() mlocks a large folios outside of the page_vma_mapped_walk() loop where the page table lock has already been dropped. Rework the mlock logic to use the same code path inside the loop for both large and small folios. Use PVMW_PGTABLE_CROSSED to detect when the folio is mapped across a page table boundary. [akpm@linux-foundation.org: s/CROSSSED/CROSSED/] Link: https://lkml.kernel.org/r/20250923110711.690639-3-kirill@shutemov.name Signed-off-by: Kiryl Shutsemau <kas@kernel.org> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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.