bcachefs: Ignore empty btree root journal entries

There's no reason to treat them as errors: just ignore them, and go with
a previous btree root if we had one.

Reported-by: syzbot+e22007d6acb9c87c2362@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-11-27 01:03:41 -05:00
commit c7e78f7b01