On Mon, Aug 22, 2016 at 02:51:25PM +0900, Daeho Jeong wrote: > Now, ext4_do_update_inode() clears high 16-bit fields of uid/gid > of deleted and evicted inode to fix up interoperability with old > kernels. However, it checks only i_dtime of an inode to determine > whether the inode was deleted and evicted, and this is very risky, > because i_dtime can be used for the pointer maintaining orphan inode > list, too. We need to further check whether the i_dtime is being > used for the orphan inode list even if the i_dtime is not NULL. > > We found that high 16-bit fields of uid/gid of inode are unintentionally > and permanently cleared when the inode truncation is just triggered, > but not finished, and the inode metadata, whose high uid/gid bits are > cleared, is written on disk, and the sudden power-off follows that > in order. > > Signed-off-by: Daeho Jeong <daeho.jeong@xxxxxxxxxxx> > Signed-off-by: Hobin Woo <hobin.woo@xxxxxxxxxxx> Thanks, applied. - Ted -- 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
