[merged mm-stable] doc-update-porting-vfs-documentation-for-mmap_prepare-actions.patch removed from -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The quilt patch titled
     Subject: doc: update porting, vfs documentation for mmap_prepare actions
has been removed from the -mm tree.  Its filename was
     doc-update-porting-vfs-documentation-for-mmap_prepare-actions.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Subject: doc: update porting, vfs documentation for mmap_prepare actions
Date: Wed, 17 Sep 2025 20:11:12 +0100

Now we have introduced the ability to specify that actions should be taken
after a VMA is established via the vm_area_desc->action field as specified
in mmap_prepare, update both the VFS documentation and the porting guide
to describe this.

Link: https://lkml.kernel.org/r/269f7675d0924fff58c427bc8f4e37487e985539.1758135681.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Chatre, Reinette <reinette.chatre@intel.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Dave Martin <dave.martin@arm.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Morse <james.morse@arm.com>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Robin Murohy <robin.murphy@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/filesystems/porting.rst |    5 +++++
 Documentation/filesystems/vfs.rst     |    4 ++++
 2 files changed, 9 insertions(+)

--- a/Documentation/filesystems/porting.rst~doc-update-porting-vfs-documentation-for-mmap_prepare-actions
+++ a/Documentation/filesystems/porting.rst
@@ -1285,3 +1285,8 @@ rather than a VMA, as the VMA at this st
 The vm_area_desc provides the minimum required information for a filesystem
 to initialise state upon memory mapping of a file-backed region, and output
 parameters for the file system to set this state.
+
+In nearly all cases, this is all that is required for a filesystem. However, if
+a filesystem needs to perform an operation such a pre-population of page tables,
+then that action can be specified in the vm_area_desc->action field, which can
+be configured using the mmap_action_*() helpers.
--- a/Documentation/filesystems/vfs.rst~doc-update-porting-vfs-documentation-for-mmap_prepare-actions
+++ a/Documentation/filesystems/vfs.rst
@@ -1236,6 +1236,10 @@ otherwise noted.
 	file-backed memory mapping, most notably establishing relevant
 	private state and VMA callbacks.
 
+	If further action such as pre-population of page tables is required,
+	this can be specified by the vm_area_desc->action field and related
+	parameters.
+
 Note that the file operations are implemented by the specific
 filesystem in which the inode resides.  When opening a device node
 (character or block special) most filesystems will call special
_

Patches currently in -mm which might be from lorenzo.stoakes@oracle.com are