fs/xfs/xfs_log.c

1173  * Only if we are then in a state where covering is needed, the caller is
1222  * Explicitly cover the log. This is similar to background log covering but
1224  * the log is idle and suitable for covering. The CIL, iclog buffers and AIL
1243 	 * state machine if the log requires covering. Therefore, we must call  in xfs_log_cover()
1247 	 * Fall into the covering sequence if the log needs covering or the  in xfs_log_cover()
1249 	 * used for covering accumulates the in-core counters, so covering  in xfs_log_cover()
1262 	 * covering the log. Push the AIL one more time to leave it empty, as  in xfs_log_cover()
1451  * of covering the log and we can get the log incompat feature usage lock.
1491 		 * during the covering operation.  in xfs_log_worker()
1495 		 * will prevent log covering from making progress. Hence we  in xfs_log_worker()
2614 	 * We go to NEED for any non-covering writes. We go to NEED2 if we just  in xlog_covered_state()
2615 	 * wrote the first covering record (DONE). We go to IDLE if we just  in xlog_covered_state()
2616 	 * wrote the second covering record (DONE2) and remain in IDLE until a  in xlog_covered_state()
2617 	 * non-covering write occurs.  in xlog_covered_state()
3875  * by a log incompat feature flag.  This will prevent log covering from