52  * requires us to log "intent" items in case log recovery needs to
58  * have not yet had an intent logged) are attached to a pending item
68  *   - Create a log intent item for that type.
82  *     log intent item.
83  *   - For each work item attached to the log intent item,
91  * The key here is that we must log an intent item for all pending
94  * we can perform complex remapping operations, chaining intent items
106  * item to prevent the log intent item from replaying, immediately log
107  * a new log intent item with the unfinished work items, roll the
109  * log done item and the new log intent item must be in the same
118  * defer_finish sees the -EAGAIN, logs the new log intent item
123  * transaction reservation to fit the new log intent item.
130  * | Intent to reduce refcount for extent (C, B)     |
131  * | Intent to remove rmap (X, C, A, B)              |
132  * | Intent to free extent (D, 1) (bmbt block)       |
133  * | Intent to map (X, A, B) at startblock E         |
137  * | Intent to increase refcount for extent (E, B)   |
138  * | Intent to add rmap (X, E, A, B)                 |
142  * | Intent to reduce refcount for extent (C+9, B-9) |
149  * | Intent to free extent (C, B)                    |
150  * | Intent to free extent (F, 1) (refcountbt block) |
151  * | Intent to remove rmap (F, 1, REFC)              |
169  * the following intent items:
171  * - Intent to reduce refcount for extent (C, B)
172  * - Intent to remove rmap (X, C, A, B)
173  * - Intent to free extent (D, 1) (bmbt block)
174  * - Intent to increase refcount for extent (E, B)
175  * - Intent to add rmap (X, E, A, B)
178  * of these intent items:
180  * - Intent to free extent (C, B)
181  * - Intent to free extent (F, 1) (refcountbt block)
182  * - Intent to remove rmap (F, 1, REFC)
199 	struct xfs_log_item		*intent)  in xfs_defer_barrier_abort_intent()  argument
207 	struct xfs_log_item		*intent,  in xfs_defer_barrier_create_done()  argument
240 /* Create a log intent done item for a log intent item. */
248 	/* If there is no log intent item, there can be no log done item. */  in xfs_defer_create_done()
256 	 * 1.) releases the log intent item and frees the log done item  in xfs_defer_create_done()
271  * Ensure there's a log intent item associated with this deferred work item if
301  * For each pending item in the intake list, log its intent item and the
368 	/* Abort intent items that don't have a done item. */  in xfs_defer_pending_abort_list()
501 	 * for the intent items to be released.  in xfs_defer_cancel_list()
526  * Prevent a log intent item from pinning the tail of the log by logging a
527  * done item to release the intent item; and then log a new intent item.
544 		 * If the log intent item for this deferred op is not a part of  in xfs_defer_relog()
545 		 * the current log checkpoint, relog the intent item to keep  in xfs_defer_relog()
575  * Log an intent-done item for the first pending intent, and finish the work
601 			 * back on the list and log a new log intent item to  in xfs_defer_finish_one()
646  * Finish all the pending work.  This involves logging intent items for
674 		 * of time that any one intent item can stick around in memory,  in xfs_defer_finish_noroll()
692 			/* Relog intent items to keep the log moving. */  in xfs_defer_finish_noroll()
881  * Create a pending deferred work item to replay the recovered intent item
896  * Cancel a deferred work item created to recover a log intent item.  @dfp
908 /* Replay the deferred work item created from a recovered log intent item. */
953  * Create and log intent items for all the work that we're capturing so that we
958  * intent items to capture, this function returns NULL.
1043  * needed to finish a log intent item that we recovered from the log.  If any