sync_handler was not mentioned in the comment block of the function.
Oversight in
dee663f.
Author: Aleksander Alekseev
Discussion: https://postgr.es/m/CAJ7c6TPUd9BwNY47TtMxaijLHSbyHNdhu=kvbGnvO_bi+oC6_Q@mail.gmail.com
Backpatch-through: 14
* ctllock: LWLock to use to control access to the shared control structure.
* subdir: PGDATA-relative subdirectory that will contain the files.
* tranche_id: LWLock tranche ID to use for the SLRU's per-buffer LWLocks.
+ * sync_handler: which set of functions to use to handle sync requests
*/
void
SimpleLruInit(SlruCtl ctl, const char *name, int nslots, int nlsns,