[patch 12/19] scan noreclaim list for reclaimable pages

V2 -> V3: + rebase to 23-mm1 atop RvR's split LRU series New in V2 This patch adds a function to scan individual or all zones' noreclaim lists and move any pages that have become reclaimable onto the respective zone's inactive list, where shrink_inactive_list() will deal with them. This replaces

[patch 12/19] scan noreclaim list for reclaimable pages

V2 -> V3: + rebase to 23-mm1 atop RvR's split LRU series New in V2 This patch adds a function to scan individual or all zones' noreclaim lists and move any pages that have become reclaimable onto the respective zone's inactive list, where shrink_inactive_list() will deal with them. This replaces