dbuf_read
(void) dbuf_read(db, NULL, flags);
err = dbuf_read(*parentp, NULL,
(void) dbuf_read(db, NULL,
(void) dbuf_read(db, NULL, DB_RF_MUST_SUCCEED);
dbuf_read(dbuf, NULL, DB_RF_MUST_SUCCEED) == 0 &&
err = dbuf_read(db, NULL, db_flags);
err = dbuf_read(db, NULL, db_flags);
error = dbuf_read(db, NULL, db_flags);
error = dbuf_read(db, NULL, db_flags);
err = dbuf_read(db, NULL, flags);
(void) dbuf_read(db, zio, dbuf_flags);
err = dbuf_read(db, zio, DB_RF_CANFAIL | DB_RF_NOPREFETCH);
err = dbuf_read(db, NULL, DB_RF_CANFAIL | DB_RF_NO_DECRYPT);
error = dbuf_read(db, NULL,
(void) dbuf_read(db, NULL, DB_RF_MUST_SUCCEED);
(void) dbuf_read(db, NULL, DB_RF_MUST_SUCCEED|DB_RF_HAVESTRUCT);
int dbuf_read(dmu_buf_impl_t *db, zio_t *zio, uint32_t flags);