50  * requires us to log "intent" items in case log recovery needs to
56  * have not yet had an intent logged) are attached to a pending item
66  *   - Create a log intent item for that type.
80  *     log intent item.
81  *   - For each work item attached to the log intent item,
89  * The key here is that we must log an intent item for all pending
92  * we can perform complex remapping operations, chaining intent items
104  * item to prevent the log intent item from replaying, immediately log
105  * a new log intent item with the unfinished work items, roll the
107  * log done item and the new log intent item must be in the same
116  * defer_finish sees the -EAGAIN, logs the new log intent item
121  * transaction reservation to fit the new log intent item.
128  * | Intent to reduce refcount for extent (C, B)     |
129  * | Intent to remove rmap (X, C, A, B)              |
130  * | Intent to free extent (D, 1) (bmbt block)       |
131  * | Intent to map (X, A, B) at startblock E         |
135  * | Intent to increase refcount for extent (E, B)   |
136  * | Intent to add rmap (X, E, A, B)                 |
140  * | Intent to reduce refcount for extent (C+9, B-9) |
147  * | Intent to free extent (C, B)                    |
148  * | Intent to free extent (F, 1) (refcountbt block) |
149  * | Intent to remove rmap (F, 1, REFC)              |
167  * the following intent items:
169  * - Intent to reduce refcount for extent (C, B)
170  * - Intent to remove rmap (X, C, A, B)
171  * - Intent to free extent (D, 1) (bmbt block)
172  * - Intent to increase refcount for extent (E, B)
173  * - Intent to add rmap (X, E, A, B)
176  * of these intent items:
178  * - Intent to free extent (C, B)
179  * - Intent to free extent (F, 1) (refcountbt block)
180  * - Intent to remove rmap (F, 1, REFC)
197 	struct xfs_log_item		*intent)  in xfs_defer_barrier_abort_intent()  argument
205 	struct xfs_log_item		*intent,  in xfs_defer_barrier_create_done()  argument
238 /* Create a log intent done item for a log intent item. */
246 	/* If there is no log intent item, there can be no log done item. */  in xfs_defer_create_done()
254 	 * 1.) releases the log intent item and frees the log done item  in xfs_defer_create_done()
269  * Ensure there's a log intent item associated with this deferred work item if
299  * For each pending item in the intake list, log its intent item and the
366 	/* Abort intent items that don't have a done item. */  in xfs_defer_pending_abort_list()
499 	 * for the intent items to be released.  in xfs_defer_cancel_list()
524  * Prevent a log intent item from pinning the tail of the log by logging a
525  * done item to release the intent item; and then log a new intent item.
542 		 * If the log intent item for this deferred op is not a part of  in xfs_defer_relog()
543 		 * the current log checkpoint, relog the intent item to keep  in xfs_defer_relog()
573  * Log an intent-done item for the first pending intent, and finish the work
599 			 * back on the list and log a new log intent item to  in xfs_defer_finish_one()
644  * Finish all the pending work.  This involves logging intent items for
672 		 * of time that any one intent item can stick around in memory,  in xfs_defer_finish_noroll()
690 			/* Relog intent items to keep the log moving. */  in xfs_defer_finish_noroll()
879  * Create a pending deferred work item to replay the recovered intent item
899  * Cancel a deferred work item created to recover a log intent item.  @dfp
911 /* Replay the deferred work item created from a recovered log intent item. */
956  * Create and log intent items for all the work that we're capturing so that we
961  * intent items to capture, this function returns NULL.
1046  * needed to finish a log intent item that we recovered from the log.  If any