return err;
}
+static inline void ext4_set_block_group_nr(struct super_block *sb, char *data,
+ ext4_group_t group)
+{
+ struct ext4_super_block *es = (struct ext4_super_block *) data;
+
+ es->s_block_group_nr = cpu_to_le16(group);
+ if (ext4_has_metadata_csum(sb))
+ es->s_checksum = ext4_superblock_csum(sb, es);
+}
+
/*
* Update the backup copies of the ext4 metadata. These don't need to be part
* of the main resize transaction, because e2fsck will re-write them if there
while (group < sbi->s_groups_count) {
struct buffer_head *bh;
ext4_fsblk_t backup_block;
- struct ext4_super_block *es;
+ int has_super = ext4_bg_has_super(sb, group);
+ ext4_fsblk_t first_block = ext4_group_first_block_no(sb, group);
/* Out of journal space, and can't get more - abort - so sad */
err = ext4_resize_ensure_credits_batch(handle, 1);
if (meta_bg == 0)
backup_block = ((ext4_fsblk_t)group) * bpg + blk_off;
else
- backup_block = (ext4_group_first_block_no(sb, group) +
- ext4_bg_has_super(sb, group));
+ backup_block = first_block + has_super;
bh = sb_getblk(sb, backup_block);
if (unlikely(!bh)) {
memcpy(bh->b_data, data, size);
if (rest)
memset(bh->b_data + size, 0, rest);
- es = (struct ext4_super_block *) bh->b_data;
- es->s_block_group_nr = cpu_to_le16(group);
- if (ext4_has_metadata_csum(sb))
- es->s_checksum = ext4_superblock_csum(sb, es);
+ if (has_super && (backup_block == first_block))
+ ext4_set_block_group_nr(sb, bh->b_data, group);
set_buffer_uptodate(bh);
unlock_buffer(bh);
err = ext4_handle_dirty_metadata(handle, NULL, bh);