Add missing dmu_buf_unlock_parent() calls to dbuf_read_impl()

As explained by the comment in dbuf_read() and above dbuf_read_impl().
Under all circumstances the parent lock specified by dblt should be
dropped when existing dbuf_read_impl().  This was not being done for
two exist paths.  Additionally, ensure the mutex is unlocked before
dropping the parent lock.

Reviewed-by: Paul Dagnelie <[email protected]>
Reviewed-by: Igor Kozhukhov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #9968 

0 files changed, 0 insertions, 0 deletions