VisionFive2 Linux kernel

diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h
index 8bcec8dcabb6..054f97b07754 100644
--- a/fs/autofs/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -63,7 +63,7 @@ struct autofs_info {
 
 	struct autofs_sb_info *sbi;
 	unsigned long last_used;
-	atomic_t count;
+	int count;
 
 	kuid_t uid;
 	kgid_t gid;
diff --git a/fs/autofs/expire.c b/fs/autofs/expire.c
index 91f5787dae7c..a1c7701007e7 100644
--- a/fs/autofs/expire.c
+++ b/fs/autofs/expire.c
@@ -211,7 +211,7 @@ static int autofs_tree_busy(struct vfsmount *mnt,
 			}
 		} else {
 			struct autofs_info *ino = autofs_dentry_ino(p);
-			unsigned int ino_count = atomic_read(&ino->count);
+			unsigned int ino_count = READ_ONCE(ino->count);
 
 			/* allow for dget above and top is already dgot */
 			if (p == top)
@@ -379,7 +379,7 @@ static struct dentry *should_expire(struct dentry *dentry,
 		/* Not a forced expire? */
 		if (!(how & AUTOFS_EXP_FORCED)) {
 			/* ref-walk currently on this dentry? */
-			ino_count = atomic_read(&ino->count) + 1;
+			ino_count = READ_ONCE(ino->count) + 1;
 			if (d_count(dentry) > ino_count)
 				return NULL;
 		}
@@ -396,7 +396,7 @@ static struct dentry *should_expire(struct dentry *dentry,
 		/* Not a forced expire? */
 		if (!(how & AUTOFS_EXP_FORCED)) {
 			/* ref-walk currently on this dentry? */
-			ino_count = atomic_read(&ino->count) + 1;
+			ino_count = READ_ONCE(ino->count) + 1;
 			if (d_count(dentry) > ino_count)
 				return NULL;
 		}
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index 29abafc0ce31..5aaa1732bf1e 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -569,10 +569,9 @@ static int autofs_dir_symlink(struct inode *dir,
 	d_add(dentry, inode);
 
 	dget(dentry);
-	atomic_inc(&ino->count);
+	ino->count++;
 	p_ino = autofs_dentry_ino(dentry->d_parent);
-	if (p_ino && !IS_ROOT(dentry))
-		atomic_inc(&p_ino->count);
+	p_ino->count++;
 
 	dir->i_mtime = current_time(dir);
 
@@ -610,11 +609,9 @@ static int autofs_dir_unlink(struct inode *dir, struct dentry *dentry)
 	if (sbi->flags & AUTOFS_SBI_CATATONIC)
 		return -EACCES;
 
-	if (atomic_dec_and_test(&ino->count)) {
-		p_ino = autofs_dentry_ino(dentry->d_parent);
-		if (p_ino && !IS_ROOT(dentry))
-			atomic_dec(&p_ino->count);
-	}
+	ino->count--;
+	p_ino = autofs_dentry_ino(dentry->d_parent);
+	p_ino->count--;
 	dput(ino->dentry);
 
 	d_inode(dentry)->i_size = 0;
@@ -660,7 +657,6 @@ static void autofs_set_leaf_automount_flags(struct dentry *dentry)
 
 static void autofs_clear_leaf_automount_flags(struct dentry *dentry)
 {
-	struct list_head *d_child;
 	struct dentry *parent;
 
 	/* flags for dentrys in the root are handled elsewhere */
@@ -673,10 +669,7 @@ static void autofs_clear_leaf_automount_flags(struct dentry *dentry)
 	/* only consider parents below dentrys in the root */
 	if (IS_ROOT(parent->d_parent))
 		return;
-	d_child = &dentry->d_child;
-	/* Set parent managed if it's becoming empty */
-	if (d_child->next == &parent->d_subdirs &&
-	    d_child->prev == &parent->d_subdirs)
+	if (autofs_dentry_ino(parent)->count == 2)
 		managed_dentry_set_managed(parent);
 }
 
@@ -698,11 +691,10 @@ static int autofs_dir_rmdir(struct inode *dir, struct dentry *dentry)
 	if (sbi->flags & AUTOFS_SBI_CATATONIC)
 		return -EACCES;
 
-	spin_lock(&sbi->lookup_lock);
-	if (!simple_empty(dentry)) {
-		spin_unlock(&sbi->lookup_lock);
+	if (ino->count != 1)
 		return -ENOTEMPTY;
-	}
+
+	spin_lock(&sbi->lookup_lock);
 	__autofs_add_expiring(dentry);
 	d_drop(dentry);
 	spin_unlock(&sbi->lookup_lock);
@@ -710,11 +702,9 @@ static int autofs_dir_rmdir(struct inode *dir, struct dentry *dentry)
 	if (sbi->version < 5)
 		autofs_clear_leaf_automount_flags(dentry);
 
-	if (atomic_dec_and_test(&ino->count)) {
-		p_ino = autofs_dentry_ino(dentry->d_parent);
-		if (p_ino && dentry->d_parent != dentry)
-			atomic_dec(&p_ino->count);
-	}
+	ino->count--;
+	p_ino = autofs_dentry_ino(dentry->d_parent);
+	p_ino->count--;
 	dput(ino->dentry);
 	d_inode(dentry)->i_size = 0;
 	clear_nlink(d_inode(dentry));
@@ -760,10 +750,9 @@ static int autofs_dir_mkdir(struct inode *dir,
 		autofs_set_leaf_automount_flags(dentry);
 
 	dget(dentry);
-	atomic_inc(&ino->count);
+	ino->count++;
 	p_ino = autofs_dentry_ino(dentry->d_parent);
-	if (p_ino && !IS_ROOT(dentry))
-		atomic_inc(&p_ino->count);
+	p_ino->count++;
 	inc_nlink(dir);
 	dir->i_mtime = current_time(dir);