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ext4: fix ext4_init_block_bitmap() for metablock block group

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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>
This commit is contained in:
Akinobu Mita 2008-07-11 19:27:31 -04:00 committed by Theodore Ts'o
parent 7477827f66
commit 6afd670713
1 changed files with 1 additions and 6 deletions
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7
fs/ext4/balloc.c
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@ -121,12 +121,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks); le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks);
} }
} else { /* For META_BG_BLOCK_GROUPS */ } else { /* For META_BG_BLOCK_GROUPS */
int group_rel = (block_group - bit_max += ext4_bg_num_gdb(sb, block_group);
le32_to_cpu(sbi->s_es->s_first_meta_bg)) %
EXT4_DESC_PER_BLOCK(sb);
if (group_rel == 0 || group_rel == 1 ||
(group_rel == EXT4_DESC_PER_BLOCK(sb) - 1))
bit_max += 1;
} }
if (block_group == sbi->s_groups_count - 1) { if (block_group == sbi->s_groups_count - 1) {