MAINTAINERS: add mm reclaim section

In furtherance of ongoing efforts to ensure people are aware of who
de-facto maintains/has an interest in specific parts of mm, as well trying
to avoid get_maintainers.pl listing only Andrew and the mailing list for
mm files - establish a reclaim memory management section and add relevant
maintainers/reviewers.

This is a key part of memory management so sensibly deserves its own
section.

This encompasses both 'classical' reclaim and MGLRU and thus reflects this
in the reviewers from both, as well as those who have contributed
specifically on the memcg side of things.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Lorenzo Stoakes <[email protected]>
Acked-by: Qi Zheng <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Shakeel Butt <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Cc: Yu Zhao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: ljskernel

MAINTAINERS

@@ -15581,6 +15581,19 @@ F:	mm/compaction.c
 F:	mm/page_alloc.c
 F:	mm/page_isolation.c
 
+MEMORY MANAGEMENT - RECLAIM
+M:	Andrew Morton <[email protected]>
+M:	Johannes Weiner <[email protected]>
+R:	David Hildenbrand <[email protected]>
+R:	Michal Hocko <[email protected]>
+R:	Qi Zheng <[email protected]>
+R:	Shakeel Butt <[email protected]>
+R:	Lorenzo Stoakes <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	mm/pt_reclaim.c
+F:	mm/vmscan.c
+
 MEMORY MANAGEMENT - RMAP (REVERSE MAPPING)
 M:	Andrew Morton <[email protected]>
 M:	David Hildenbrand <[email protected]>