SOCKFS_I
struct sockfs_inode *si = SOCKFS_I(inode);
struct sockfs_inode *si = SOCKFS_I(inode);
struct sockfs_inode *si = SOCKFS_I(inode);
struct sockfs_inode *si = SOCKFS_I(inode);
struct sockfs_inode *si = SOCKFS_I(d_inode(dentry));