gfs2: Improve gfs2_block_map comment

}

/**

 * gfs2_block_map - Map a block from an inode to a disk block

 * gfs2_block_map - Map one or more blocks of an inode to a disk block

 * @inode: The inode

 * @lblock: The logical block number

 * @bh_map: The bh to be mapped

 * @create: True if its ok to alloc blocks to satify the request

 *

 * Sets buffer_mapped() if successful, sets buffer_boundary() if a

 * read of metadata will be required before the next block can be

 * mapped. Sets buffer_new() if new blocks were allocated.

 * The size of the requested mapping is defined in bh_map->b_size.

 *

 * Clears buffer_mapped(bh_map) and leaves bh_map->b_size unchanged

 * when @lblock is not mapped.  Sets buffer_mapped(bh_map) and

 * bh_map->b_size to indicate the size of the mapping when @lblock and

 * successive blocks are mapped, up to the requested size.

 *

 * Sets buffer_boundary() if a read of metadata will be required

 * before the next block can be mapped. Sets buffer_new() if new

 * blocks were allocated.

 *

 * Returns: errno

 */