[PATCH] mark struct inode_operations const 1

[linux-2.6-omap-h63xx.git] / fs / configfs / dir.c

diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 8a3b6a1a6ad139aa50ba1da2e10bdf6cd0de2980..34750d5e4ff2c4b0b6b3bc841fdcb016db5f5d62 100644 (file)
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -72,11 +72,10 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
 {
        struct configfs_dirent * sd;
 
-       sd = kmem_cache_alloc(configfs_dir_cachep, GFP_KERNEL);
+       sd = kmem_cache_zalloc(configfs_dir_cachep, GFP_KERNEL);
        if (!sd)
                return NULL;
 
-       memset(sd, 0, sizeof(*sd));
        atomic_set(&sd->s_count, 1);
        INIT_LIST_HEAD(&sd->s_links);
        INIT_LIST_HEAD(&sd->s_children);
@@ -93,8 +92,8 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
  *
  * called with parent inode's i_mutex held
  */
-int configfs_dirent_exists(struct configfs_dirent *parent_sd,
-                          const unsigned char *new)
+static int configfs_dirent_exists(struct configfs_dirent *parent_sd,
+                                 const unsigned char *new)
 {
        struct configfs_dirent * sd;
 
@@ -931,7 +930,7 @@ static int configfs_rmdir(struct inode *dir, struct dentry *dentry)
        return 0;
 }
 
-struct inode_operations configfs_dir_inode_operations = {
+const struct inode_operations configfs_dir_inode_operations = {
        .mkdir          = configfs_mkdir,
        .rmdir          = configfs_rmdir,
        .symlink        = configfs_symlink,
@@ -980,7 +979,7 @@ int configfs_rename_dir(struct config_item * item, const char *new_name)
 
 static int configfs_dir_open(struct inode *inode, struct file *file)
 {
-       struct dentry * dentry = file->f_dentry;
+       struct dentry * dentry = file->f_path.dentry;
        struct configfs_dirent * parent_sd = dentry->d_fsdata;
 
        mutex_lock(&dentry->d_inode->i_mutex);
@@ -993,7 +992,7 @@ static int configfs_dir_open(struct inode *inode, struct file *file)
 
 static int configfs_dir_close(struct inode *inode, struct file *file)
 {
-       struct dentry * dentry = file->f_dentry;
+       struct dentry * dentry = file->f_path.dentry;
        struct configfs_dirent * cursor = file->private_data;
 
        mutex_lock(&dentry->d_inode->i_mutex);
@@ -1013,7 +1012,7 @@ static inline unsigned char dt_type(struct configfs_dirent *sd)
 
 static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
 {
-       struct dentry *dentry = filp->f_dentry;
+       struct dentry *dentry = filp->f_path.dentry;
        struct configfs_dirent * parent_sd = dentry->d_fsdata;
        struct configfs_dirent *cursor = filp->private_data;
        struct list_head *p, *q = &cursor->s_sibling;
@@ -1070,7 +1069,7 @@ static int configfs_readdir(struct file * filp, void * dirent, filldir_t filldir
 
 static loff_t configfs_dir_lseek(struct file * file, loff_t offset, int origin)
 {
-       struct dentry * dentry = file->f_dentry;
+       struct dentry * dentry = file->f_path.dentry;
 
        mutex_lock(&dentry->d_inode->i_mutex);
        switch (origin) {
@@ -1080,7 +1079,7 @@ static loff_t configfs_dir_lseek(struct file * file, loff_t offset, int origin)
                        if (offset >= 0)
                                break;
                default:
-                       mutex_unlock(&file->f_dentry->d_inode->i_mutex);
+                       mutex_unlock(&file->f_path.dentry->d_inode->i_mutex);
                        return -EINVAL;
        }
        if (offset != file->f_pos) {
@@ -1176,8 +1175,9 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys)
                return;
        }
 
-       mutex_lock(&configfs_sb->s_root->d_inode->i_mutex);
-       mutex_lock(&dentry->d_inode->i_mutex);
+       mutex_lock_nested(&configfs_sb->s_root->d_inode->i_mutex,
+                         I_MUTEX_PARENT);
+       mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
        if (configfs_detach_prep(dentry)) {
                printk(KERN_ERR "configfs: Tried to unregister non-empty subsystem!\n");
        }