forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/fs/xfs/libxfs/xfs_defer.c
....@@ -9,8 +9,6 @@
99 #include "xfs_format.h"
1010 #include "xfs_log_format.h"
1111 #include "xfs_trans_resv.h"
12
-#include "xfs_bit.h"
13
-#include "xfs_sb.h"
1412 #include "xfs_mount.h"
1513 #include "xfs_defer.h"
1614 #include "xfs_trans.h"
....@@ -18,6 +16,8 @@
1816 #include "xfs_inode.h"
1917 #include "xfs_inode_item.h"
2018 #include "xfs_trace.h"
19
+#include "xfs_icache.h"
20
+#include "xfs_log.h"
2121 
2222 /*
2323  * Deferred Operations in XFS
....@@ -172,7 +172,26 @@
172172  * reoccur.
173173  */
174174 
175
-static const struct xfs_defer_op_type *defer_op_types[XFS_DEFER_OPS_TYPE_MAX];
175
+static const struct xfs_defer_op_type *defer_op_types[] = {
176
+	[XFS_DEFER_OPS_TYPE_BMAP]	= &xfs_bmap_update_defer_type,
177
+	[XFS_DEFER_OPS_TYPE_REFCOUNT]	= &xfs_refcount_update_defer_type,
178
+	[XFS_DEFER_OPS_TYPE_RMAP]	= &xfs_rmap_update_defer_type,
179
+	[XFS_DEFER_OPS_TYPE_FREE]	= &xfs_extent_free_defer_type,
180
+	[XFS_DEFER_OPS_TYPE_AGFL_FREE]	= &xfs_agfl_free_defer_type,
181
+};
182
+
183
+static void
184
+xfs_defer_create_intent(
185
+	struct xfs_trans		*tp,
186
+	struct xfs_defer_pending	*dfp,
187
+	bool				sort)
188
+{
189
+	const struct xfs_defer_op_type	*ops = defer_op_types[dfp->dfp_type];
190
+
191
+	if (!dfp->dfp_intent)
192
+		dfp->dfp_intent = ops->create_intent(tp, &dfp->dfp_work,
193
+						     dfp->dfp_count, sort);
194
+}
176195 
177196 /*
178197  * For each pending item in the intake list, log its intent item and the
....@@ -183,17 +202,11 @@
183202 xfs_defer_create_intents(
184203 	struct xfs_trans		*tp)
185204 {
186
-	struct list_head		*li;
187205 	struct xfs_defer_pending	*dfp;
188206 
189207 	list_for_each_entry(dfp, &tp->t_dfops, dfp_list) {
190
-		dfp->dfp_intent = dfp->dfp_type->create_intent(tp,
191
-				dfp->dfp_count);
192208 		trace_xfs_defer_create_intent(tp->t_mountp, dfp);
193
-		list_sort(tp->t_mountp, &dfp->dfp_work,
194
-				dfp->dfp_type->diff_items);
195
-		list_for_each(li, &dfp->dfp_work)
196
-			dfp->dfp_type->log_item(tp, dfp->dfp_intent, li);
209
+		xfs_defer_create_intent(tp, dfp, true);
197210 	}
198211 }
199212 
....@@ -204,14 +217,16 @@
204217 	struct list_head		*dop_pending)
205218 {
206219 	struct xfs_defer_pending	*dfp;
220
+	const struct xfs_defer_op_type	*ops;
207221 
208222 	trace_xfs_defer_trans_abort(tp, _RET_IP_);
209223 
210224 	/* Abort intent items that don't have a done item. */
211225 	list_for_each_entry(dfp, dop_pending, dfp_list) {
226
+		ops = defer_op_types[dfp->dfp_type];
212227 		trace_xfs_defer_pending_abort(tp->t_mountp, dfp);
213228 		if (dfp->dfp_intent && !dfp->dfp_done) {
214
-			dfp->dfp_type->abort_intent(dfp->dfp_intent);
229
+			ops->abort_intent(dfp->dfp_intent);
215230 			dfp->dfp_intent = NULL;
216231 		}
217232 	}
....@@ -228,9 +243,12 @@
228243 	struct xfs_log_item		*lip;
229244 	struct xfs_buf			*bplist[XFS_DEFER_OPS_NR_BUFS];
230245 	struct xfs_inode		*iplist[XFS_DEFER_OPS_NR_INODES];
246
+	unsigned int			ordered = 0; /* bitmap */
231247 	int				bpcount = 0, ipcount = 0;
232248 	int				i;
233249 	int				error;
250
+
251
+	BUILD_BUG_ON(NBBY * sizeof(ordered) < XFS_DEFER_OPS_NR_BUFS);
234252 
235253 	list_for_each_entry(lip, &tp->t_items, li_trans) {
236254 		switch (lip->li_type) {
....@@ -242,7 +260,10 @@
242260 					ASSERT(0);
243261 					return -EFSCORRUPTED;
244262 				}
245
-				xfs_trans_dirty_buf(tp, bli->bli_buf);
263
+				if (bli->bli_flags & XFS_BLI_ORDERED)
264
+					ordered |= (1U << bpcount);
265
+				else
266
+					xfs_trans_dirty_buf(tp, bli->bli_buf);
246267 				bplist[bpcount++] = bli->bli_buf;
247268 			}
248269 			break;
....@@ -283,28 +304,14 @@
283304 	/* Rejoin the buffers and dirty them so the log moves forward. */
284305 	for (i = 0; i < bpcount; i++) {
285306 		xfs_trans_bjoin(tp, bplist[i]);
307
+		if (ordered & (1U << i))
308
+			xfs_trans_ordered_buf(tp, bplist[i]);
286309 		xfs_trans_bhold(tp, bplist[i]);
287310 	}
288311 
289312 	if (error)
290313 		trace_xfs_defer_trans_roll_error(tp, error);
291314 	return error;
292
-}
293
-
294
-/*
295
- * Reset an already used dfops after finish.
296
- */
297
-static void
298
-xfs_defer_reset(
299
-	struct xfs_trans	*tp)
300
-{
301
-	ASSERT(list_empty(&tp->t_dfops));
302
-
303
-	/*
304
-	 * Low mode state transfers across transaction rolls to mirror dfops
305
-	 * lifetime. Clear it now that dfops is reset.
306
-	 */
307
-	tp->t_flags &= ~XFS_TRANS_LOWMODE;
308315 }
309316 
310317 /*
....@@ -319,22 +326,124 @@
319326 	struct xfs_defer_pending	*pli;
320327 	struct list_head		*pwi;
321328 	struct list_head		*n;
329
+	const struct xfs_defer_op_type	*ops;
322330 
323331 	/*
324332 	 * Free the pending items.  Caller should already have arranged
325333 	 * for the intent items to be released.
326334 	 */
327335 	list_for_each_entry_safe(dfp, pli, dop_list, dfp_list) {
336
+		ops = defer_op_types[dfp->dfp_type];
328337 		trace_xfs_defer_cancel_list(mp, dfp);
329338 		list_del(&dfp->dfp_list);
330339 		list_for_each_safe(pwi, n, &dfp->dfp_work) {
331340 			list_del(pwi);
332341 			dfp->dfp_count--;
333
-			dfp->dfp_type->cancel_item(pwi);
342
+			ops->cancel_item(pwi);
334343 		}
335344 		ASSERT(dfp->dfp_count == 0);
336345 		kmem_free(dfp);
337346 	}
347
+}
348
+
349
+/*
350
+ * Prevent a log intent item from pinning the tail of the log by logging a
351
+ * done item to release the intent item; and then log a new intent item.
352
+ * The caller should provide a fresh transaction and roll it after we're done.
353
+ */
354
+static int
355
+xfs_defer_relog(
356
+	struct xfs_trans		**tpp,
357
+	struct list_head		*dfops)
358
+{
359
+	struct xlog			*log = (*tpp)->t_mountp->m_log;
360
+	struct xfs_defer_pending	*dfp;
361
+	xfs_lsn_t			threshold_lsn = NULLCOMMITLSN;
362
+
363
+
364
+	ASSERT((*tpp)->t_flags & XFS_TRANS_PERM_LOG_RES);
365
+
366
+	list_for_each_entry(dfp, dfops, dfp_list) {
367
+		/*
368
+		 * If the log intent item for this deferred op is not a part of
369
+		 * the current log checkpoint, relog the intent item to keep
370
+		 * the log tail moving forward.  We're ok with this being racy
371
+		 * because an incorrect decision means we'll be a little slower
372
+		 * at pushing the tail.
373
+		 */
374
+		if (dfp->dfp_intent == NULL ||
375
+		    xfs_log_item_in_current_chkpt(dfp->dfp_intent))
376
+			continue;
377
+
378
+		/*
379
+		 * Figure out where we need the tail to be in order to maintain
380
+		 * the minimum required free space in the log.  Only sample
381
+		 * the log threshold once per call.
382
+		 */
383
+		if (threshold_lsn == NULLCOMMITLSN) {
384
+			threshold_lsn = xlog_grant_push_threshold(log, 0);
385
+			if (threshold_lsn == NULLCOMMITLSN)
386
+				break;
387
+		}
388
+		if (XFS_LSN_CMP(dfp->dfp_intent->li_lsn, threshold_lsn) >= 0)
389
+			continue;
390
+
391
+		trace_xfs_defer_relog_intent((*tpp)->t_mountp, dfp);
392
+		XFS_STATS_INC((*tpp)->t_mountp, defer_relog);
393
+		dfp->dfp_intent = xfs_trans_item_relog(dfp->dfp_intent, *tpp);
394
+	}
395
+
396
+	if ((*tpp)->t_flags & XFS_TRANS_DIRTY)
397
+		return xfs_defer_trans_roll(tpp);
398
+	return 0;
399
+}
400
+
401
+/*
402
+ * Log an intent-done item for the first pending intent, and finish the work
403
+ * items.
404
+ */
405
+static int
406
+xfs_defer_finish_one(
407
+	struct xfs_trans		*tp,
408
+	struct xfs_defer_pending	*dfp)
409
+{
410
+	const struct xfs_defer_op_type	*ops = defer_op_types[dfp->dfp_type];
411
+	struct xfs_btree_cur		*state = NULL;
412
+	struct list_head		*li, *n;
413
+	int				error;
414
+
415
+	trace_xfs_defer_pending_finish(tp->t_mountp, dfp);
416
+
417
+	dfp->dfp_done = ops->create_done(tp, dfp->dfp_intent, dfp->dfp_count);
418
+	list_for_each_safe(li, n, &dfp->dfp_work) {
419
+		list_del(li);
420
+		dfp->dfp_count--;
421
+		error = ops->finish_item(tp, dfp->dfp_done, li, &state);
422
+		if (error == -EAGAIN) {
423
+			/*
424
+			 * Caller wants a fresh transaction; put the work item
425
+			 * back on the list and log a new log intent item to
426
+			 * replace the old one.  See "Requesting a Fresh
427
+			 * Transaction while Finishing Deferred Work" above.
428
+			 */
429
+			list_add(li, &dfp->dfp_work);
430
+			dfp->dfp_count++;
431
+			dfp->dfp_done = NULL;
432
+			dfp->dfp_intent = NULL;
433
+			xfs_defer_create_intent(tp, dfp, false);
434
+		}
435
+
436
+		if (error)
437
+			goto out;
438
+	}
439
+
440
+	/* Done with the dfp, free it. */
441
+	list_del(&dfp->dfp_list);
442
+	kmem_free(dfp);
443
+out:
444
+	if (ops->finish_cleanup)
445
+		ops->finish_cleanup(tp, state, error);
446
+	return error;
338447 }
339448 
340449 /*
....@@ -350,11 +459,7 @@
350459 	struct xfs_trans		**tp)
351460 {
352461 	struct xfs_defer_pending	*dfp;
353
-	struct list_head		*li;
354
-	struct list_head		*n;
355
-	void				*state;
356462 	int				error = 0;
357
-	void				(*cleanup_fn)(struct xfs_trans *, void *, int);
358463 	LIST_HEAD(dop_pending);
359464 
360465 	ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES);
....@@ -363,88 +468,44 @@
363468 
364469 	/* Until we run out of pending work to finish... */
365470 	while (!list_empty(&dop_pending) || !list_empty(&(*tp)->t_dfops)) {
366
-		/* log intents and pull in intake items */
367
-		xfs_defer_create_intents(*tp);
368
-		list_splice_tail_init(&(*tp)->t_dfops, &dop_pending);
369
-
370471 		/*
371
-		 * Roll the transaction.
472
+		 * Deferred items that are created in the process of finishing
473
+		 * other deferred work items should be queued at the head of
474
+		 * the pending list, which puts them ahead of the deferred work
475
+		 * that was created by the caller.  This keeps the number of
476
+		 * pending work items to a minimum, which decreases the amount
477
+		 * of time that any one intent item can stick around in memory,
478
+		 * pinning the log tail.
372479 		 */
480
+		xfs_defer_create_intents(*tp);
481
+		list_splice_init(&(*tp)->t_dfops, &dop_pending);
482
+
373483 		error = xfs_defer_trans_roll(tp);
374484 		if (error)
375
-			goto out;
485
+			goto out_shutdown;
376486 
377
-		/* Log an intent-done item for the first pending item. */
487
+		/* Possibly relog intent items to keep the log moving. */
488
+		error = xfs_defer_relog(tp, &dop_pending);
489
+		if (error)
490
+			goto out_shutdown;
491
+
378492 		dfp = list_first_entry(&dop_pending, struct xfs_defer_pending,
379493 				       dfp_list);
380
-		trace_xfs_defer_pending_finish((*tp)->t_mountp, dfp);
381
-		dfp->dfp_done = dfp->dfp_type->create_done(*tp, dfp->dfp_intent,
382
-				dfp->dfp_count);
383
-		cleanup_fn = dfp->dfp_type->finish_cleanup;
384
-
385
-		/* Finish the work items. */
386
-		state = NULL;
387
-		list_for_each_safe(li, n, &dfp->dfp_work) {
388
-			list_del(li);
389
-			dfp->dfp_count--;
390
-			error = dfp->dfp_type->finish_item(*tp, li,
391
-					dfp->dfp_done, &state);
392
-			if (error == -EAGAIN) {
393
-				/*
394
-				 * Caller wants a fresh transaction;
395
-				 * put the work item back on the list
396
-				 * and jump out.
397
-				 */
398
-				list_add(li, &dfp->dfp_work);
399
-				dfp->dfp_count++;
400
-				break;
401
-			} else if (error) {
402
-				/*
403
-				 * Clean up after ourselves and jump out.
404
-				 * xfs_defer_cancel will take care of freeing
405
-				 * all these lists and stuff.
406
-				 */
407
-				if (cleanup_fn)
408
-					cleanup_fn(*tp, state, error);
409
-				goto out;
410
-			}
411
-		}
412
-		if (error == -EAGAIN) {
413
-			/*
414
-			 * Caller wants a fresh transaction, so log a
415
-			 * new log intent item to replace the old one
416
-			 * and roll the transaction.  See "Requesting
417
-			 * a Fresh Transaction while Finishing
418
-			 * Deferred Work" above.
419
-			 */
420
-			dfp->dfp_intent = dfp->dfp_type->create_intent(*tp,
421
-					dfp->dfp_count);
422
-			dfp->dfp_done = NULL;
423
-			list_for_each(li, &dfp->dfp_work)
424
-				dfp->dfp_type->log_item(*tp, dfp->dfp_intent,
425
-						li);
426
-		} else {
427
-			/* Done with the dfp, free it. */
428
-			list_del(&dfp->dfp_list);
429
-			kmem_free(dfp);
430
-		}
431
-
432
-		if (cleanup_fn)
433
-			cleanup_fn(*tp, state, error);
434
-	}
435
-
436
-out:
437
-	if (error) {
438
-		xfs_defer_trans_abort(*tp, &dop_pending);
439
-		xfs_force_shutdown((*tp)->t_mountp, SHUTDOWN_CORRUPT_INCORE);
440
-		trace_xfs_defer_finish_error(*tp, error);
441
-		xfs_defer_cancel_list((*tp)->t_mountp, &dop_pending);
442
-		xfs_defer_cancel(*tp);
443
-		return error;
494
+		error = xfs_defer_finish_one(*tp, dfp);
495
+		if (error && error != -EAGAIN)
496
+			goto out_shutdown;
444497 	}
445498 
446499 	trace_xfs_defer_finish_done(*tp, _RET_IP_);
447500 	return 0;
501
+
502
+out_shutdown:
503
+	xfs_defer_trans_abort(*tp, &dop_pending);
504
+	xfs_force_shutdown((*tp)->t_mountp, SHUTDOWN_CORRUPT_INCORE);
505
+	trace_xfs_defer_finish_error(*tp, error);
506
+	xfs_defer_cancel_list((*tp)->t_mountp, &dop_pending);
507
+	xfs_defer_cancel(*tp);
508
+	return error;
448509 }
449510 
450511 int
....@@ -468,7 +529,10 @@
468529 			return error;
469530 		}
470531 	}
471
-	xfs_defer_reset(*tp);
532
+
533
+	/* Reset LOWMODE now that we've finished all the dfops. */
534
+	ASSERT(list_empty(&(*tp)->t_dfops));
535
+	(*tp)->t_flags &= ~XFS_TRANS_LOWMODE;
472536 	return 0;
473537 }
474538 
....@@ -490,8 +554,10 @@
490554 	struct list_head		*li)
491555 {
492556 	struct xfs_defer_pending	*dfp = NULL;
557
+	const struct xfs_defer_op_type	*ops;
493558 
494559 	ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
560
+	BUILD_BUG_ON(ARRAY_SIZE(defer_op_types) != XFS_DEFER_OPS_TYPE_MAX);
495561 
496562 	/*
497563 	 * Add the item to a pending item at the end of the intake list.
....@@ -501,15 +567,15 @@
501567 	if (!list_empty(&tp->t_dfops)) {
502568 		dfp = list_last_entry(&tp->t_dfops,
503569 				struct xfs_defer_pending, dfp_list);
504
-		if (dfp->dfp_type->type != type ||
505
-		    (dfp->dfp_type->max_items &&
506
-		     dfp->dfp_count >= dfp->dfp_type->max_items))
570
+		ops = defer_op_types[dfp->dfp_type];
571
+		if (dfp->dfp_type != type ||
572
+		    (ops->max_items && dfp->dfp_count >= ops->max_items))
507573 			dfp = NULL;
508574 	}
509575 	if (!dfp) {
510576 		dfp = kmem_alloc(sizeof(struct xfs_defer_pending),
511
-				KM_SLEEP | KM_NOFS);
512
-		dfp->dfp_type = defer_op_types[type];
577
+				KM_NOFS);
578
+		dfp->dfp_type = type;
513579 		dfp->dfp_intent = NULL;
514580 		dfp->dfp_done = NULL;
515581 		dfp->dfp_count = 0;
....@@ -519,14 +585,6 @@
519585 
520586 	list_add_tail(li, &dfp->dfp_work);
521587 	dfp->dfp_count++;
522
-}
523
-
524
-/* Initialize a deferred operation list. */
525
-void
526
-xfs_defer_init_op_type(
527
-	const struct xfs_defer_op_type	*type)
528
-{
529
-	defer_op_types[type->type] = type;
530588 }
531589 
532590 /*
....@@ -548,6 +606,139 @@
548606 	 * that behavior.
549607 	 */
550608 	dtp->t_flags |= (stp->t_flags & XFS_TRANS_LOWMODE);
609
+	stp->t_flags &= ~XFS_TRANS_LOWMODE;
610
+}
551611 
552
-	xfs_defer_reset(stp);
612
+/*
613
+ * Prepare a chain of fresh deferred ops work items to be completed later.  Log
614
+ * recovery requires the ability to put off until later the actual finishing
615
+ * work so that it can process unfinished items recovered from the log in
616
+ * correct order.
617
+ *
618
+ * Create and log intent items for all the work that we're capturing so that we
619
+ * can be assured that the items will get replayed if the system goes down
620
+ * before log recovery gets a chance to finish the work it put off.  The entire
621
+ * deferred ops state is transferred to the capture structure and the
622
+ * transaction is then ready for the caller to commit it.  If there are no
623
+ * intent items to capture, this function returns NULL.
624
+ *
625
+ * If capture_ip is not NULL, the capture structure will obtain an extra
626
+ * reference to the inode.
627
+ */
628
+static struct xfs_defer_capture *
629
+xfs_defer_ops_capture(
630
+	struct xfs_trans		*tp,
631
+	struct xfs_inode		*capture_ip)
632
+{
633
+	struct xfs_defer_capture	*dfc;
634
+
635
+	if (list_empty(&tp->t_dfops))
636
+		return NULL;
637
+
638
+	/* Create an object to capture the defer ops. */
639
+	dfc = kmem_zalloc(sizeof(*dfc), KM_NOFS);
640
+	INIT_LIST_HEAD(&dfc->dfc_list);
641
+	INIT_LIST_HEAD(&dfc->dfc_dfops);
642
+
643
+	xfs_defer_create_intents(tp);
644
+
645
+	/* Move the dfops chain and transaction state to the capture struct. */
646
+	list_splice_init(&tp->t_dfops, &dfc->dfc_dfops);
647
+	dfc->dfc_tpflags = tp->t_flags & XFS_TRANS_LOWMODE;
648
+	tp->t_flags &= ~XFS_TRANS_LOWMODE;
649
+
650
+	/* Capture the remaining block reservations along with the dfops. */
651
+	dfc->dfc_blkres = tp->t_blk_res - tp->t_blk_res_used;
652
+	dfc->dfc_rtxres = tp->t_rtx_res - tp->t_rtx_res_used;
653
+
654
+	/* Preserve the log reservation size. */
655
+	dfc->dfc_logres = tp->t_log_res;
656
+
657
+	/*
658
+	 * Grab an extra reference to this inode and attach it to the capture
659
+	 * structure.
660
+	 */
661
+	if (capture_ip) {
662
+		ihold(VFS_I(capture_ip));
663
+		dfc->dfc_capture_ip = capture_ip;
664
+	}
665
+
666
+	return dfc;
667
+}
668
+
669
+/* Release all resources that we used to capture deferred ops. */
670
+void
671
+xfs_defer_ops_release(
672
+	struct xfs_mount		*mp,
673
+	struct xfs_defer_capture	*dfc)
674
+{
675
+	xfs_defer_cancel_list(mp, &dfc->dfc_dfops);
676
+	if (dfc->dfc_capture_ip)
677
+		xfs_irele(dfc->dfc_capture_ip);
678
+	kmem_free(dfc);
679
+}
680
+
681
+/*
682
+ * Capture any deferred ops and commit the transaction.  This is the last step
683
+ * needed to finish a log intent item that we recovered from the log.  If any
684
+ * of the deferred ops operate on an inode, the caller must pass in that inode
685
+ * so that the reference can be transferred to the capture structure.  The
686
+ * caller must hold ILOCK_EXCL on the inode, and must unlock it before calling
687
+ * xfs_defer_ops_continue.
688
+ */
689
+int
690
+xfs_defer_ops_capture_and_commit(
691
+	struct xfs_trans		*tp,
692
+	struct xfs_inode		*capture_ip,
693
+	struct list_head		*capture_list)
694
+{
695
+	struct xfs_mount		*mp = tp->t_mountp;
696
+	struct xfs_defer_capture	*dfc;
697
+	int				error;
698
+
699
+	ASSERT(!capture_ip || xfs_isilocked(capture_ip, XFS_ILOCK_EXCL));
700
+
701
+	/* If we don't capture anything, commit transaction and exit. */
702
+	dfc = xfs_defer_ops_capture(tp, capture_ip);
703
+	if (!dfc)
704
+		return xfs_trans_commit(tp);
705
+
706
+	/* Commit the transaction and add the capture structure to the list. */
707
+	error = xfs_trans_commit(tp);
708
+	if (error) {
709
+		xfs_defer_ops_release(mp, dfc);
710
+		return error;
711
+	}
712
+
713
+	list_add_tail(&dfc->dfc_list, capture_list);
714
+	return 0;
715
+}
716
+
717
+/*
718
+ * Attach a chain of captured deferred ops to a new transaction and free the
719
+ * capture structure.  If an inode was captured, it will be passed back to the
720
+ * caller with ILOCK_EXCL held and joined to the transaction with lockflags==0.
721
+ * The caller now owns the inode reference.
722
+ */
723
+void
724
+xfs_defer_ops_continue(
725
+	struct xfs_defer_capture	*dfc,
726
+	struct xfs_trans		*tp,
727
+	struct xfs_inode		**captured_ipp)
728
+{
729
+	ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
730
+	ASSERT(!(tp->t_flags & XFS_TRANS_DIRTY));
731
+
732
+	/* Lock and join the captured inode to the new transaction. */
733
+	if (dfc->dfc_capture_ip) {
734
+		xfs_ilock(dfc->dfc_capture_ip, XFS_ILOCK_EXCL);
735
+		xfs_trans_ijoin(tp, dfc->dfc_capture_ip, 0);
736
+	}
737
+	*captured_ipp = dfc->dfc_capture_ip;
738
+
739
+	/* Move captured dfops chain and state to the transaction. */
740
+	list_splice_init(&dfc->dfc_dfops, &tp->t_dfops);
741
+	tp->t_flags |= dfc->dfc_tpflags;
742
+
743
+	kmem_free(dfc);
553744 }