linux-kernel - [PATCH 03/20] mm: zswap: move zswap_invalidate

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Date: Mon, 29 Jan 2024 20:36:39 -0500
From: Johannes Weiner <hannes@...xchg.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Nhat Pham <nphamcs@...il.com>,
	Yosry Ahmed <yosryahmed@...gle.com>,
	Chengming Zhou <zhouchengming@...edance.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 03/20] mm: zswap: move zswap_invalidate_entry() to related functions

Move it up to the other tree and refcounting functions.

Signed-off-by: Johannes Weiner <hannes@...xchg.org>
---
 mm/zswap.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index cf864aaa214d..9f05282efe3c 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -559,6 +559,18 @@ static void zswap_entry_put(struct zswap_entry *entry)
 	}
 }
 
+/*
+ * If the entry is still valid in the tree, drop the initial ref and remove it
+ * from the tree. This function must be called with an additional ref held,
+ * otherwise it may race with another invalidation freeing the entry.
+ */
+static void zswap_invalidate_entry(struct zswap_tree *tree,
+				   struct zswap_entry *entry)
+{
+	if (zswap_rb_erase(&tree->rbroot, entry))
+		zswap_entry_put(entry);
+}
+
 /*********************************
 * shrinker functions
 **********************************/
@@ -809,18 +821,6 @@ static struct zswap_pool *zswap_pool_find_get(char *type, char *compressor)
 	return NULL;
 }
 
-/*
- * If the entry is still valid in the tree, drop the initial ref and remove it
- * from the tree. This function must be called with an additional ref held,
- * otherwise it may race with another invalidation freeing the entry.
- */
-static void zswap_invalidate_entry(struct zswap_tree *tree,
-				   struct zswap_entry *entry)
-{
-	if (zswap_rb_erase(&tree->rbroot, entry))
-		zswap_entry_put(entry);
-}
-
 static enum lru_status shrink_memcg_cb(struct list_head *item, struct list_lru_one *l,
 				       spinlock_t *lock, void *arg)
 {
-- 
2.43.0