Clarify a comment after MDEV-15061

This commit is contained in:
Marko Mäkelä 2018-02-04 13:11:49 +02:00
parent c8299e6278
commit d6ed077fc8

View File

@ -5853,8 +5853,11 @@ lock_rec_block_validate(
buf_block_t* block;
mtr_t mtr;
/* Make sure that the tablespace is not deleted while we are
trying to access the page. */
/* Transactional locks should never refer to dropped
tablespaces, because all DDL operations that would drop or
discard or rebuild a tablespace do hold an exclusive table
lock, which would conflict with any locks referring to the
tablespace from other transactions. */
if (fil_space_t* space = fil_space_acquire(space_id)) {
dberr_t err = DB_SUCCESS;
mtr_start(&mtr);