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authorAkinobu Mita <akinobu.mita@gmail.com>2008-07-11 19:27:31 -0400
committerTheodore Ts'o <tytso@mit.edu>2008-07-11 19:27:31 -0400
commit6afd670713c9e7d5c5550e379dfedca8ffab4c90 (patch)
tree3cf037d9d0f91bef6cebd77523da71d68bb1a7f8
parent7477827f6686ce29b6216d9eb26f6b9027742dcc (diff)
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>
-rw-r--r--fs/ext4/balloc.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 6dcbec9b256..1327ac3a04d 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -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);
}
} else { /* For META_BG_BLOCK_GROUPS */
- int group_rel = (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;
+ bit_max += ext4_bg_num_gdb(sb, block_group);
}
if (block_group == sbi->s_groups_count - 1) {