mm/mglru: remove no longer used reclaim argument for folio protection

Now dirty reclaim folios are handled after isolation, not before, since
dirty reactivation must take the folio off LRU first, and that helps to
unify the dirty handling logic.

So this argument is no longer needed.  Just remove it.

Link: https://lore.kernel.org/20260428-mglru-reclaim-v7-12-02fabb92dc43@tencent.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Chen Ridong <chenridong@huaweicloud.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: David Stevens <stevensd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Leno Hou <lenohou@gmail.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Yafang <laoar.shao@gmail.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index d26c89546542c9f3ff3a3cdb66ae16a37cb02290..22c78509c2c8fd42a95255487380cb082516368c 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3224,7 +3224,7 @@ static int folio_update_gen(struct folio *folio, int gen)
 }
 
 /* protect pages accessed multiple times through file descriptors */
-static int folio_inc_gen(struct lruvec *lruvec, struct folio *folio, bool reclaiming)
+static int folio_inc_gen(struct lruvec *lruvec, struct folio *folio)
 {
        int type = folio_is_file_lru(folio);
        struct lru_gen_folio *lrugen = &lruvec->lrugen;
@@ -3243,9 +3243,6 @@ static int folio_inc_gen(struct lruvec *lruvec, struct folio *folio, bool reclai
 
                new_flags = old_flags & ~(LRU_GEN_MASK | LRU_REFS_FLAGS);
                new_flags |= (new_gen + 1UL) << LRU_GEN_PGOFF;
-               /* for folio_end_writeback() */
-               if (reclaiming)
-                       new_flags |= BIT(PG_reclaim);
        } while (!try_cmpxchg(&folio->flags.f, &old_flags, new_flags));
 
        lru_gen_update_size(lruvec, folio, old_gen, new_gen);
@@ -3859,7 +3856,7 @@ static bool inc_min_seq(struct lruvec *lruvec, int type, int swappiness)
                        VM_WARN_ON_ONCE_FOLIO(folio_is_file_lru(folio) != type, folio);
                        VM_WARN_ON_ONCE_FOLIO(folio_zonenum(folio) != zone, folio);
 
-                       new_gen = folio_inc_gen(lruvec, folio, false);
+                       new_gen = folio_inc_gen(lruvec, folio);
                        list_move_tail(&folio->lru, &lrugen->folios[new_gen][type][zone]);
 
                        /* don't count the workingset being lazily promoted */
@@ -4611,7 +4608,7 @@ static bool sort_folio(struct lruvec *lruvec, struct folio *folio, struct scan_c
 
        /* protected */
        if (tier > tier_idx || refs + workingset == BIT(LRU_REFS_WIDTH) + 1) {
-               gen = folio_inc_gen(lruvec, folio, false);
+               gen = folio_inc_gen(lruvec, folio);
                list_move(&folio->lru, &lrugen->folios[gen][type][zone]);
 
                /* don't count the workingset being lazily promoted */
@@ -4626,7 +4623,7 @@ static bool sort_folio(struct lruvec *lruvec, struct folio *folio, struct scan_c
 
        /* ineligible */
        if (zone > sc->reclaim_idx) {
-               gen = folio_inc_gen(lruvec, folio, false);
+               gen = folio_inc_gen(lruvec, folio);
                list_move_tail(&folio->lru, &lrugen->folios[gen][type][zone]);
                return true;
        }