79 	 * first checkpoint it is written to. Hence if it is different to the  in xlog_item_in_current_chkpt()
80 	 * current sequence, we're in a new checkpoint.  in xlog_item_in_current_chkpt()
199  * initialise the first CIL checkpoint context.
410 	 * tell in future commits whether this is the first checkpoint  in xfs_cil_prepare_item()
541  * consumed by the item. Add the space to the checkpoint ticket and calculate
543  * as well. Remove the amount of space we added to the checkpoint ticket from
565 	 * We can do this safely because the context can't checkpoint until we  in xlog_cil_insert_items()
591 	 * We need to take the CIL checkpoint unit reservation on the first  in xlog_cil_insert_items()
772 * contain the start record for the checkpoint. Otherwise this write contains
773 * the commit record for the checkpoint.
841  * Ensure that the order of log writes follows checkpoint sequence order. This
919  * Write out the commit record of a checkpoint transaction to close off a
969  * Build a checkpoint transaction header to begin the journal transaction.  We
1214 	 * For example, if we get an EFI in one checkpoint and the EFD in the  in xlog_cil_push_work()
1215 	 * next (e.g. due to log forces), we do not want the checkpoint with  in xlog_cil_push_work()
1216 	 * the EFD to be committed before the checkpoint with the EFI.  Hence  in xlog_cil_push_work()
1218 	 * that: a) the checkpoint callbacks are attached to the iclogs in the  in xlog_cil_push_work()
1245 	 * Build a checkpoint transaction header and write it to the log to  in xlog_cil_push_work()
1272 	 * releasing the commit_iclog (i.e. checkpoint has been completed and  in xlog_cil_push_work()
1279 	 * If the checkpoint spans multiple iclogs, wait for all previous iclogs  in xlog_cil_push_work()
1307 		 * checkpoint is correctly preserved down to stable storage.  in xlog_cil_push_work()
1360  * the log. The limit really is that a checkpoint can't be more than half the
1361  * log (the current checkpoint is not allowed to overwrite the previous
1362  * checkpoint), but commit latency and memory usage limit this to a smaller
1441  * checkpoint is fully flushed out of the iclogs when we finish the push. If we
1507  * committed in the current (same) CIL checkpoint, we don't need to write either
1509  * journalled atomically within this checkpoint. As we cannot remove items from
1548  * transaction to the checkpoint context so we carry the busy extents through
1549  * to checkpoint completion, and then unlock all the items in the transaction.
1594 	 * to disk. If we don't, then the CIL checkpoint can race with us and  in xlog_cil_commit()
1595 	 * we can run checkpoint completion before we've updated and unlocked  in xlog_cil_commit()
1627 	 * If the CIL is empty, make sure that any previous checkpoint that may  in xlog_cil_flush()