On Mon, Jun 20, 2011 at 02:32:03PM -0700, Joel Becker wrote: > Are we guaranteed that all allocation changes are locked out by > i_dio_count>0? I don't think we are. The ocfs2 code very strongly > assumes the state of a file's allocation when it holds i_alloc_sem. I > feel like we lose that here. You aren't, neither with the old i_alloc_sem code, nor with the 1:1 replacement using i_dio_count. Do a quick grep who gets i_alloc_sem exclusively (down_write): it's really just the truncate code, and it's cut & paste duplicates in ntfs and reiserfs. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
