[to-be-updated] mm-list_lru-deduplicate-unlock_list_lru.patch removed from -mm tree

[to-be-updated] mm-list_lru-deduplicate-unlock_list_lru.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: list_lru: deduplicate unlock_list_lru()
has been removed from the -mm tree.  Its filename was
     mm-list_lru-deduplicate-unlock_list_lru.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: mm: list_lru: deduplicate unlock_list_lru()
Date: Wed, 18 Mar 2026 15:53:20 -0400

The MEMCG and !MEMCG variants are the same.  lock_list_lru() has the same
pattern when bailing.  Consolidate into a common implementation.

Link: https://lkml.kernel.org/r/20260318200352.1039011-3-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nico Pache <npache@redhat.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/list_lru.c |   29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

--- a/mm/list_lru.c~mm-list_lru-deduplicate-unlock_list_lru
+++ a/mm/list_lru.c
@@ -15,6 +15,14 @@
 #include "slab.h"
 #include "internal.h"
 
+static inline void unlock_list_lru(struct list_lru_one *l, bool irq_off)
+{
+	if (irq_off)
+		spin_unlock_irq(&l->lock);
+	else
+		spin_unlock(&l->lock);
+}
+
 #ifdef CONFIG_MEMCG
 static LIST_HEAD(memcg_list_lrus);
 static DEFINE_MUTEX(list_lrus_mutex);
@@ -67,10 +75,7 @@ static inline bool lock_list_lru(struct
 	else
 		spin_lock(&l->lock);
 	if (unlikely(READ_ONCE(l->nr_items) == LONG_MIN)) {
-		if (irq)
-			spin_unlock_irq(&l->lock);
-		else
-			spin_unlock(&l->lock);
+		unlock_list_lru(l, irq);
 		return false;
 	}
 	return true;
@@ -101,14 +106,6 @@ again:
 	memcg = parent_mem_cgroup(memcg);
 	goto again;
 }
-
-static inline void unlock_list_lru(struct list_lru_one *l, bool irq_off)
-{
-	if (irq_off)
-		spin_unlock_irq(&l->lock);
-	else
-		spin_unlock(&l->lock);
-}
 #else
 static void list_lru_register(struct list_lru *lru)
 {
@@ -147,14 +144,6 @@ lock_list_lru_of_memcg(struct list_lru *
 
 	return l;
 }
-
-static inline void unlock_list_lru(struct list_lru_one *l, bool irq_off)
-{
-	if (irq_off)
-		spin_unlock_irq(&l->lock);
-	else
-		spin_unlock(&l->lock);
-}
 #endif /* CONFIG_MEMCG */
 
 /* The caller must ensure the memcg lifetime. */
_

Patches currently in -mm which might be from hannes@cmpxchg.org are

mm-list_lru-move-list-dead-check-to-lock_list_lru_of_memcg.patch
mm-list_lru-deduplicate-lock_list_lru.patch
mm-list_lru-introduce-caller-locking-for-additions-and-deletions.patch
mm-list_lru-introduce-folio_memcg_list_lru_alloc.patch
mm-switch-deferred-split-shrinker-to-list_lru.patch