ncpfs: use list_for_each_entry() for d_subdirs walk

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ncpfs/dir.c

@@ -388,7 +388,6 @@ static struct dentry *
 ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
 {
 	struct dentry *dent = dentry;
-	struct list_head *next;
 
 	if (d_validate(dent, parent)) {
 		if (dent->d_name.len <= NCP_MAXPATHLEN &&
@@ -404,9 +403,7 @@ ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
 
 	/* If a pointer is invalid, we search the dentry. */
 	spin_lock(&parent->d_lock);
-	next = parent->d_subdirs.next;
-	while (next != &parent->d_subdirs) {
-		dent = list_entry(next, struct dentry, d_u.d_child);
+	list_for_each_entry(dent, &parent->d_subdirs, d_u.d_child) {
 		if ((unsigned long)dent->d_fsdata == fpos) {
 			if (dent->d_inode)
 				dget(dent);
@@ -415,7 +412,6 @@ ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
 			spin_unlock(&parent->d_lock);
 			goto out;
 		}
-		next = next->next;
 	}
 	spin_unlock(&parent->d_lock);
 	return NULL;

fs/ncpfs/ncplib_kernel.h

@@ -188,20 +188,14 @@ static inline void
 ncp_renew_dentries(struct dentry *parent)
 {
 	struct ncp_server *server = NCP_SERVER(parent->d_inode);
-	struct list_head *next;
 	struct dentry *dentry;
 
 	spin_lock(&parent->d_lock);
-	next = parent->d_subdirs.next;
-	while (next != &parent->d_subdirs) {
-		dentry = list_entry(next, struct dentry, d_u.d_child);
-
+	list_for_each_entry(dentry, &parent->d_subdirs, d_u.d_child) {
 		if (dentry->d_fsdata == NULL)
 			ncp_age_dentry(server, dentry);
 		else
 			ncp_new_dentry(dentry);
-
-		next = next->next;
 	}
 	spin_unlock(&parent->d_lock);
 }
@@ -210,16 +204,12 @@ static inline void
 ncp_invalidate_dircache_entries(struct dentry *parent)
 {
 	struct ncp_server *server = NCP_SERVER(parent->d_inode);
-	struct list_head *next;
 	struct dentry *dentry;
 
 	spin_lock(&parent->d_lock);
-	next = parent->d_subdirs.next;
-	while (next != &parent->d_subdirs) {
-		dentry = list_entry(next, struct dentry, d_u.d_child);
+	list_for_each_entry(dentry, &parent->d_subdirs, d_u.d_child) {
 		dentry->d_fsdata = NULL;
 		ncp_age_dentry(server, dentry);
-		next = next->next;
 	}
 	spin_unlock(&parent->d_lock);
 }