bcachefs: Fix bch2_journal_flush_device_pins()

It's now legal for the pin fifo to be empty, which means this code needs
to be updated in order to not hit an assert.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2022-03-07 01:35:55 -05:00 • committed by Kent Overstreet
commit a2b9a5b272