Hi, Sergey! On Dec 10, Sergey Vojtovich wrote:

At lp:maria/10.0

------------------------------------------------------------ revno: 3914 revision-id: svoj@mariadb.org-20131210150036-0hwh1gy4z3jalwsg parent: bar@mnogosearch.org-20131203101253-mbz05d9jtkb3iycp committer: Sergey Vojtovich <svoj@mariadb.org> branch nick: 10.0-mdev4956 timestamp: Tue 2013-12-10 19:00:36 +0400 message: MDEV-4956 - Reduce usage of LOCK_open: TABLE_SHARE::tdc.used_tables

- tc_acquire_table and tc_release_table do not access TABLE_SHARE::tdc.used_tables anymore - in tc_acquire_table(): release LOCK_tdc after we relase LOCK_open (saves a few CPU cycles in critical section) - in tc_release_table(): if we reached table cache threshold, evict to-be-released table without moving it to unused_tables. unused_tables must be empty at this point.

Looks ok to me Regards, Sergei