ext4: add a new function which allocates bitmaps and inode tables

	kfree(flex_gd);

}

/*

 * ext4_alloc_group_tables() allocates block bitmaps, inode bitmaps

 * and inode tables for a flex group.

 *

 * This function is used by 64bit-resize.  Note that this function allocates

 * group tables from the 1st group of groups contained by @flexgd, which may

 * be a partial of a flex group.

 *

 * @sb: super block of fs to which the groups belongs

 */

static void ext4_alloc_group_tables(struct super_block *sb,

				struct ext4_new_flex_group_data *flex_gd,

				int flexbg_size)

{

	struct ext4_new_group_data *group_data = flex_gd->groups;

	struct ext4_super_block *es = EXT4_SB(sb)->s_es;

	ext4_fsblk_t start_blk;

	ext4_fsblk_t last_blk;

	ext4_group_t src_group;

	ext4_group_t bb_index = 0;

	ext4_group_t ib_index = 0;

	ext4_group_t it_index = 0;

	ext4_group_t group;

	ext4_group_t last_group;

	unsigned overhead;

	BUG_ON(flex_gd->count == 0 || group_data == NULL);

	src_group = group_data[0].group;

	last_group  = src_group + flex_gd->count - 1;

	BUG_ON((flexbg_size > 1) && ((src_group & ~(flexbg_size - 1)) !=

	       (last_group & ~(flexbg_size - 1))));

next_group:

	group = group_data[0].group;

	start_blk = ext4_group_first_block_no(sb, src_group);

	last_blk = start_blk + group_data[src_group - group].blocks_count;

	overhead = ext4_bg_has_super(sb, src_group) ?

		   (1 + ext4_bg_num_gdb(sb, src_group) +

		    le16_to_cpu(es->s_reserved_gdt_blocks)) : 0;

	start_blk += overhead;

	BUG_ON(src_group >= group_data[0].group + flex_gd->count);

	/* We collect contiguous blocks as much as possible. */

	src_group++;

	for (; src_group <= last_group; src_group++)

		if (!ext4_bg_has_super(sb, src_group))

			last_blk += group_data[src_group - group].blocks_count;

		else

			break;

	/* Allocate block bitmaps */

	for (; bb_index < flex_gd->count; bb_index++) {

		if (start_blk >= last_blk)

			goto next_group;

		group_data[bb_index].block_bitmap = start_blk++;

		ext4_get_group_no_and_offset(sb, start_blk - 1, &group, NULL);

		group -= group_data[0].group;

		group_data[group].free_blocks_count--;

		if (flexbg_size > 1)

			flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT;

	}

	/* Allocate inode bitmaps */

	for (; ib_index < flex_gd->count; ib_index++) {

		if (start_blk >= last_blk)

			goto next_group;

		group_data[ib_index].inode_bitmap = start_blk++;

		ext4_get_group_no_and_offset(sb, start_blk - 1, &group, NULL);

		group -= group_data[0].group;

		group_data[group].free_blocks_count--;

		if (flexbg_size > 1)

			flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT;

	}

	/* Allocate inode tables */

	for (; it_index < flex_gd->count; it_index++) {

		if (start_blk + EXT4_SB(sb)->s_itb_per_group > last_blk)

			goto next_group;

		group_data[it_index].inode_table = start_blk;

		ext4_get_group_no_and_offset(sb, start_blk, &group, NULL);

		group -= group_data[0].group;

		group_data[group].free_blocks_count -=

					EXT4_SB(sb)->s_itb_per_group;

		if (flexbg_size > 1)

			flex_gd->bg_flags[group] &= ~EXT4_BG_BLOCK_UNINIT;

		start_blk += EXT4_SB(sb)->s_itb_per_group;

	}

	if (test_opt(sb, DEBUG)) {

		int i;

		group = group_data[0].group;

		printk(KERN_DEBUG "EXT4-fs: adding a flex group with "

		       "%d groups, flexbg size is %d:\n", flex_gd->count,

		       flexbg_size);

		for (i = 0; i < flex_gd->count; i++) {

			printk(KERN_DEBUG "adding %s group %u: %u "

			       "blocks (%d free)\n",

			       ext4_bg_has_super(sb, group + i) ? "normal" :

			       "no-super", group + i,

			       group_data[i].blocks_count,

			       group_data[i].free_blocks_count);

		}

	}

}

static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,

				  ext4_fsblk_t blk)

{