bcachefs: Fix fallocate FL_INSERT_RANGE

This was another bug because of bch2_btree_iter_set_pos() invalidating
iterators.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-04-01 16:07:57 -04:00 • committed by Kent Overstreet
commit 283eda5798