[PATCH v1] exfat: fix just enough dentries but allocate a new cluster to dir

["Yuezhang.Mo@xxxxxxxx" <Yuezhang.Mo@xxxxxxxx>]

This commit fixes the condition for allocating cluster to parent
directory to avoid allocating new cluster to parent directory when
there are just enough empty directory entries at the end of the
parent directory.

Fixes: af02c72d0b62 ("exfat: convert exfat_find_empty_entry() to use dentry cache")
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
---
 fs/exfat/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index 97d2774760fe..ca616f2f2c8a 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -237,7 +237,7 @@ static int exfat_search_empty_slot(struct super_block *sb,
 		dentry = 0;
 	}
 
-	while (dentry + num_entries < total_entries &&
+	while (dentry + num_entries <= total_entries &&
 	       clu.dir != EXFAT_EOF_CLUSTER) {
 		i = dentry & (dentries_per_clu - 1);
 
-- 
2.43.0

From 04f3de07904c77decfb8e05138ad5ed0f435ad3b Mon Sep 17 00:00:00 2001
From: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
Date: Fri, 22 Nov 2024 10:50:55 +0800
Subject: [PATCH v1] exfat: fix just enough dentries but allocate a new cluster
 to dir

This commit fixes the condition for allocating cluster to parent
directory to avoid allocating new cluster to parent directory when
there are just enough empty directory entries at the end of the
parent directory.

Fixes: af02c72d0b62 ("exfat: convert exfat_find_empty_entry() to use dentry cache")
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@xxxxxxxx>
---
 fs/exfat/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c
index 97d2774760fe..ca616f2f2c8a 100644
--- a/fs/exfat/namei.c
+++ b/fs/exfat/namei.c
@@ -237,7 +237,7 @@ static int exfat_search_empty_slot(struct super_block *sb,
 		dentry = 0;
 	}
 
-	while (dentry + num_entries < total_entries &&
+	while (dentry + num_entries <= total_entries &&
 	       clu.dir != EXFAT_EOF_CLUSTER) {
 		i = dentry & (dentries_per_clu - 1);
 
-- 
2.43.0