mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-14 05:22:19 -04:00
d3f7922b92
Prior to commitaed877c2b4("device/dax: properly refcount device dax pages when mapping") ZONE_DEVICE pages were not fully reference counted when mapped into user page tables. Instead GUP would take a reference on the associated pgmap to ensure the results of pfn_to_page() remained valid. This is no longer required and most of the code was removed by commitfd2825b076("mm/gup: remove pXX_devmap usage from get_user_pages()"). Finish cleaning this up by removing the dead calls to put_dev_pagemap() and the temporary context struct. Link: https://lkml.kernel.org/r/20250903225926.34702-1-apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.