On Tue, Oct 08, 2013 at 04:16:23PM +0200, David Sterba wrote: > On Tue, Oct 08, 2013 at 06:19:30PM +0800, Liu Bo wrote: > > We can't defrag the extent root without deadlock. > > Deadlock under what circumstance? Eg. with snapshot aware defag turned > on or extent tree cannot be safely defragmented at all?
Hmm, my assumption is based on the comments in btrfs_defrag_leaves(), Quoting, "there's recursion here right now in the tree locking, we can't defrag the extent root without deadlock." But I just made a quick test, defragment on extent root seems to be good. I need to dig this more, thanks for pointing out that, Dave. -liubo -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
