bcachefs: trans_get_key() now works correctly for extents

More prep work for reflink: for extents, we're not looking for an exact
mach on pos, rather that the pos is within the range of the key the
iterator points to.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2019-08-07 12:07:13 -04:00 • committed by Kent Overstreet
commit e3d3a9d91a