diff options
| -rw-r--r-- | drivers/md/bcache/super.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index a234c4c9c89b..8c4b61f50517 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -79,11 +79,20 @@ static const char *read_super_common(struct cache_sb *sb, struct block_device * if (sb->nbuckets < 1 << 7) goto err; - err = "Bad block/bucket size"; - if (!is_power_of_2(sb->block_size) || - sb->block_size > PAGE_SECTORS || - !is_power_of_2(sb->bucket_size) || - sb->bucket_size < PAGE_SECTORS) + err = "Bad block size (not power of 2)"; + if (!is_power_of_2(sb->block_size)) + goto err; + + err = "Bad block size (larger than page size)"; + if (sb->block_size > PAGE_SECTORS) + goto err; + + err = "Bad bucket size (not power of 2)"; + if (!is_power_of_2(sb->bucket_size)) + goto err; + + err = "Bad bucket size (smaller than page size)"; + if (sb->bucket_size < PAGE_SECTORS) goto err; err = "Invalid superblock: device too small"; |