On 19.07.2017 16:11, Nikolay Borisov wrote: > > > On 18.07.2017 20:25, Christoph Hellwig wrote: >> Just like in the allocator we must avoid touching multiple AGs out of >> order when freeing blocks, as freeing still locks the AGF and can cause >> the same AB-BA deadlocks as in the allocation path. >> >> Signed-off-by: Christoph Hellwig <hch@lst.d> Reported-by: Nikolay Borisov <n.borisov.lkml@xxxxxxxxx> > > Unfortunately I this patch is not enough. I just tested on a 3.12 kernel ( the issue was easiest to repro there) > and I still get stack traces. I will also test on a 4.4-based kernel as well but I assume the results are going to > be the same. I can confirm that on 4.4 I also hit the same deadlock. So this patch is not sufficient. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
