linux-kernel - [f2fs-dev] [PATCH 1/2] f2fs: avoid redundant clean nat entry move in lru list

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Message-ID: <20250718100706.3948806-1-wangzijie1@honor.com>
Date: Fri, 18 Jul 2025 18:07:05 +0800
From: wangzijie <wangzijie1@...or.com>
To: <jaegeuk@...nel.org>, <chao@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>, <linux-kernel@...r.kernel.org>,
	<bintian.wang@...or.com>, <feng.han@...or.com>, wangzijie
	<wangzijie1@...or.com>
Subject: [f2fs-dev] [PATCH 1/2] f2fs: avoid redundant clean nat entry move in lru list

__lookup_nat_cache follows LRU manner to move clean nat entry, when nat
entries are going to be dirty, no need to move them to tail of lru list.

Signed-off-by: wangzijie <wangzijie1@...or.com>
---
 fs/f2fs/node.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 4b3d9070e..b9fbc6bf7 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -460,7 +460,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni,
 	struct nat_entry *new = __alloc_nat_entry(sbi, ni->nid, true);
 
 	f2fs_down_write(&nm_i->nat_tree_lock);
-	e = __lookup_nat_cache(nm_i, ni->nid);
+	e = radix_tree_lookup(&nm_i->nat_root, ni->nid);
 	if (!e) {
 		e = __init_nat_entry(nm_i, new, NULL, true);
 		copy_node_info(&e->ni, ni);
@@ -2926,7 +2926,7 @@ static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
 
 		raw_ne = nat_in_journal(journal, i);
 
-		ne = __lookup_nat_cache(nm_i, nid);
+		ne = radix_tree_lookup(&nm_i->nat_root, nid);
 		if (!ne) {
 			ne = __alloc_nat_entry(sbi, nid, true);
 			__init_nat_entry(nm_i, ne, &raw_ne, true);
-- 
2.25.1