On Mon, Jan 29, 2018 at 10:06:52PM +0800, Qu Wenruo wrote: > > > On 2018年01月29日 21:53, Nikolay Borisov wrote: > > Running generic/019 with qgroups on the scratch device enabled is > > almost guaranteed to trigger the BUG_ON in btrfs_free_tree_block. It's > > supposed to trigger only on -ENOMEM, in reality, however, it's possible > > to get -EIO from btrfs_qgroup_trace_extent_post. This function just > > finds the roots of the extent being tracked and sets the qrecord->old_roots > > list. If this operation fails nothing critical happens except the > > quota accounting can be considered wrong. In such case just set the > > INCONSISTENT flag for the quota and print a warning, rather than > > killing off the system. Additionally, it's possible to trigger a BUG_ON > > in btrfs_truncate_inode_items as well. > > > > Signed-off-by: Nikolay Borisov <nbori...@suse.com> > > Reviewed-by: Qu Wenruo <w...@suse.com>
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