Dear Ted,
one (hopefully) last thing about this patch:
blocks_count = (ext4_blocks_count(es) -
le32_to_cpu(es->s_first_data_block) +
EXT4_BLOCKS_PER_GROUP(sb) - 1);
do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb));
+ if (blocks_count > ((uint64_t)1<<32) - EXT4_DESC_PER_BLOCK(sb)) {
+ printk(KERN_WARNING "EXT4-fs: groups count too large: %u "
+ "(block count %llu, first data block %u, "
+ "blocks per group %lu)\n", sbi->s_groups_count,
+ ext4_blocks_count(es),
+ le32_to_cpu(es->s_first_data_block),
+ EXT4_BLOCKS_PER_GROUP(sb));
+ goto failed_mount;
+ }
sbi->s_groups_count = blocks_count;
db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
EXT4_DESC_PER_BLOCK(sb);
When you printk() sbi->s_groups_count it is not yet initialised, I think
blocks_count should be used there instead.
Kind regards,
Thiemo
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