udf: Factor out code for creating indirect extent

Factor out code for creating indirect extent from udf_add_aext(). It was
mostly duplicated in two places. Also remove some opencoded versions
of udf_write_aext().

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2015-12-23 14:21:13 +01:00
commit fcea62babc
3 changed files with 130 additions and 189 deletions