K 10 svn:author V 3 mav K 8 svn:date V 27 2016-10-29T08:53:38.436887Z K 7 svn:log V 541 MFC r306424: MFV r306422: 7254 ztest failed assertion in ztest_dataset_dirobj_verify: dirobjs + 1 == usedobjs dsl_dataset_space is looking at the ds_bp's fill count while dmu_objset_write_ready() is concurrently modifying it. This fix adds an rrwlock to protect the ds_bp. Closes #180 Reviewed by: George Wilson Reviewed by: Prakash Surya Reviewed by: Matthew Ahrens Reviewed by: Steve Gonczi Author: Paul Dagnelie END