On 2010-06-24, at 11:41 AM, Valerie Aurora <vaurora@xxxxxxxxxx> wrote: > On Tue, Jun 22, 2010 at 05:24:34PM -0600, Andreas Dilger wrote: > >> lib/ext2fs/blknum.c assumes 64BIT means ext4_group_desc, not s_desc_size: >> struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs, >> struct opaque_ext2_group_desc *gdp, >> dgrp_t group) >> { >> if (fs->super->s_desc_size >= EXT2_MIN_DESC_SIZE_64BIT) >> return (struct ext2_group_desc *) >> ((struct ext4_group_desc *) gdp + group); >> else >> return (struct ext2_group_desc *) gdp + group; >> } > > I'm not sure I understand. Are there more than two possible sizes for > group descriptors? Or is the existing code correct but you'd like to > use s_desc_size directly for simplicity? When the 64BIT flag is set the size kid the group descriptor is given by s_group_desc, which is currently the same as struct ext4_group_desc, but it might be larger in the future. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html