ext4: fix ext4_init_block_bitmap() for metablock block group
When meta_bg feature is enabled and s_first_meta_bg != 0, ext4_init_block_bitmap() miscalculates the number of block used by the group descriptor table (0 or 1 for metablock block group) This patch fixes this by using ext4_bg_num_gdb() Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stephen Tweedie <sct@redhat.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Acked-by: Andreas Dilger <adilger@sun.com>
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@ -121,12 +121,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
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le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks);
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}
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} else { /* For META_BG_BLOCK_GROUPS */
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int group_rel = (block_group -
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le32_to_cpu(sbi->s_es->s_first_meta_bg)) %
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EXT4_DESC_PER_BLOCK(sb);
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if (group_rel == 0 || group_rel == 1 ||
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(group_rel == EXT4_DESC_PER_BLOCK(sb) - 1))
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bit_max += 1;
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bit_max += ext4_bg_num_gdb(sb, block_group);
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}
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if (block_group == sbi->s_groups_count - 1) {
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