3316
3318
* First, we iterate through the per-backend fast-path arrays, locking
3318
3320
* system state, but taking all of those LWLocks at the same time seems
3319
3321
* impractical (in particular, note MAX_SIMUL_LWLOCKS). It shouldn't
3320
3322
* matter too much, because none of these locks can be involved in lock