fs/jfs/jfs_logmgr.c

23  *	group commit:
28  *	TBD lazy commit:
34  * . a per log lock serialize group commit.
86  *	log group commit serialization (per log)
193 	uint commit;		/* # of commit */
276 	 * commit time to allow forwarding log syncpt past log
337  * PARAMETER:	cd	- commit descriptor
496 			INCREMENT(lmStat.commit);	/* # of commit */
499 			 * enqueue tblock for group commit:
502 			 * at tail of group commit queue
504 			 * group commit.)
514 			/* enqueue transaction to commit queue */
572 	/* get the tail tblk on commit queue */
579 	 * and has not been committed, must be on commit queue
580 	 * since tblk is queued at commit queueu at the time
603 			 * No current GC leader, initiate group commit
646  * FUNCTION:	group commit
654  *	LOGGC_LOCK serializes log group commit queue, and
655  *	transaction blocks on the commit queue.
683 		 * start group commit as its group leader.
716 	/* removed from commit queue */
727  * FUNCTION:	group commit write
729  *	with commit records on that page.
741 	int gcpn;		/* group commit page number */
746 	 * build the commit group of a log page
748 	 * scan commit queue and make a commit group of all
751 	/* get the head tblk on the commit queue */
766 	 * pageout to commit transactions on the log page.
772 		/* mark page to free at end of group commit of the page */
793  * FUNCTION:	group commit post-processing
794  *	Processes transactions after their commit records have been written
812 	 * current pageout of group commit completed.
814 	 * remove/wakeup transactions from commit queue who were
828 		/* remove it from the commit queue */
843 			 * Hand tblk over to lazy commit thread
878 	 * They are waiting for new group commit (above at (SLEEP 1))
892 	 * queued (GC_QUEUE) and not entered for group commit yet).
893 	 * the first transaction entering group commit
1022 		 * We may have to initiate group commit
1252 	/* initialize the group commit serialization lock */
1398 	 * initialize for lazy/group commit
1525 		 * as there are unwritten commit records
2213 	 * if single-commit/full-page pageout, remove the current buffer
2258 			 * first page of new group commit which has been
2484 		       lmStat.commit,