proc_sb_info
struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb);
fs_info = proc_sb_info(dentry->d_sb);
struct proc_fs_info *fs_info = proc_sb_info(file_inode(file)->i_sb);
fs_info = proc_sb_info(dentry->d_sb);
struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb);
struct proc_fs_info *fs_info = proc_sb_info(dir->i_sb);
struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb);
struct proc_fs_info *fs_info = proc_sb_info(root->d_sb);
struct proc_fs_info *fs_info = proc_sb_info(sb);
struct proc_fs_info *fs_info = proc_sb_info(sb);
return proc_sb_info(sb)->pid_ns;