MAINTAINERS: add section for locking of mm's and VMAs

We place this under memory mapping as related to memory mapping
abstractions in the form of mm_struct and vm_area_struct (VMA).  Now we
have separated out mmap/vma locking logic into the mmap_lock.c and
mmap_lock.h files, so this should encapsulate the majority of the mm
locking logic in the kernel.

Suren is best placed to maintain this logic as the core architect of VMA
locking as a whole.

Link: https://lkml.kernel.org/r/e6ed679a184ca444b20dfa77af96913fd8b5efa0.1744799282.git.lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <[email protected]>
Reviewed-by: Suren Baghdasaryan <[email protected]>
Reviewed-by: Shakeel Butt <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Reviewed-by: Liam R. Howlett <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: "Paul E . McKenney" <[email protected]>
Cc: SeongJae Park <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: lorenzo-stoakes

MAINTAINERS

@@ -15574,6 +15574,22 @@ F:	mm/vma.h
 F:	mm/vma_internal.h
 F:	tools/testing/vma/
 
+MEMORY MAPPING - LOCKING
+M:	Andrew Morton <[email protected]>
+M:	Suren Baghdasaryan <[email protected]>
+M:	Liam R. Howlett <[email protected]>
+M:	Lorenzo Stoakes <[email protected]>
+R:	Vlastimil Babka <[email protected]>
+R:	Shakeel Butt <[email protected]>
+L:	[email protected]
+S:	Maintained
+W:	http://www.linux-mm.org
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
+F:	Documentation/mm/process_addrs.rst
+F:	include/linux/mmap_lock.h
+F:	include/trace/events/mmap_lock.h
+F:	mm/mmap_lock.c
+
 MEMORY MAPPING - MADVISE (MEMORY ADVICE)
 M:	Andrew Morton <[email protected]>
 M:	Liam R. Howlett <[email protected]>