On Thu, Oct 11, 2018 at 8:58 PM Josef Bacik <jo...@toxicpanda.com> wrote: > > This could result in a really bad case where we do something like > > evict > evict_refill_and_join > btrfs_commit_transaction > btrfs_run_delayed_iputs > evict > evict_refill_and_join > btrfs_commit_transaction > ... forever > > We have plenty of other places where we run delayed iputs that are much > safer, let those do the work. > > Signed-off-by: Josef Bacik <jo...@toxicpanda.com> Reviewed-by: Filipe Manana <fdman...@suse.com>
Great catch! > --- > fs/btrfs/transaction.c | 9 --------- > 1 file changed, 9 deletions(-) > > diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c > index 9168efaca37e..c91dc36fccae 100644 > --- a/fs/btrfs/transaction.c > +++ b/fs/btrfs/transaction.c > @@ -2265,15 +2265,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle > *trans) > > kmem_cache_free(btrfs_trans_handle_cachep, trans); > > - /* > - * If fs has been frozen, we can not handle delayed iputs, otherwise > - * it'll result in deadlock about SB_FREEZE_FS. > - */ > - if (current != fs_info->transaction_kthread && > - current != fs_info->cleaner_kthread && > - !test_bit(BTRFS_FS_FROZEN, &fs_info->flags)) > - btrfs_run_delayed_iputs(fs_info); > - > return ret; > > scrub_continue: > -- > 2.14.3 > -- Filipe David Manana, “Whether you think you can, or you think you can't — you're right.”
