From: Chi Zhiling <chizhiling@kylinos.cn>
Date: Wed, 14 Jan 2026 12:12:40 +0000 (+0800)
Subject: exfat: improve exfat_find_last_cluster
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e205c484b1feb3297f78351f3866cb60afe004b;p=thirdparty%2Fkernel%2Fstable.git

exfat: improve exfat_find_last_cluster

Since exfat_ent_get support cache buffer head, let's apply it to
exfat_find_last_cluster.

Signed-off-by: Chi Zhiling <chizhiling@kylinos.cn>
Reviewed-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
---

diff --git a/fs/exfat/fatent.c b/fs/exfat/fatent.c
index f060eab2f2f2..71ee16479c43 100644
--- a/fs/exfat/fatent.c
+++ b/fs/exfat/fatent.c
@@ -296,6 +296,7 @@ int exfat_free_cluster(struct inode *inode, struct exfat_chain *p_chain)
 int exfat_find_last_cluster(struct super_block *sb, struct exfat_chain *p_chain,
 		unsigned int *ret_clu)
 {
+	struct buffer_head *bh = NULL;
 	unsigned int clu, next;
 	unsigned int count = 0;
 
@@ -308,10 +309,11 @@ int exfat_find_last_cluster(struct super_block *sb, struct exfat_chain *p_chain,
 	do {
 		count++;
 		clu = next;
-		if (exfat_ent_get(sb, clu, &next, NULL))
+		if (exfat_ent_get(sb, clu, &next, &bh))
 			return -EIO;
 	} while (next != EXFAT_EOF_CLUSTER && count <= p_chain->size);
 
+	brelse(bh);
 	if (p_chain->size != count) {
 		exfat_fs_error(sb,
 			"bogus directory size (clus : ondisk(%d) != counted(%d))",