debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/fs/nilfs2/mdt.c
..
..
@@ -199,7 +199,7 @@
199
199
  out_no_wait:
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200
 	err = -EIO;
201
201
 	if (!buffer_uptodate(first_bh)) {
202
-		nilfs_msg(inode->i_sb, KERN_ERR,
202
+		nilfs_err(inode->i_sb,
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 			  "I/O error reading meta-data file (ino=%lu, block-offset=%lu)",
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 			  inode->i_ino, block);
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 		goto failed_bh;
..
..
@@ -469,9 +469,18 @@
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469
 void nilfs_mdt_clear(struct inode *inode)
470
470
 {
471
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 	struct nilfs_mdt_info *mdi = NILFS_MDT(inode);
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+	struct nilfs_shadow_map *shadow = mdi->mi_shadow;
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473
 
473
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 	if (mdi->mi_palloc_cache)
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 		nilfs_palloc_destroy_cache(inode);
476
+
477
+	if (shadow) {
478
+		struct inode *s_inode = shadow->inode;
479
+
480
+		shadow->inode = NULL;
481
+		iput(s_inode);
482
+		mdi->mi_shadow = NULL;
483
+	}
475
484
 }
476
485
 
477
486
 /**
..
..
@@ -505,12 +514,15 @@
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 			       struct nilfs_shadow_map *shadow)
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 {
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 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);
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+	struct inode *s_inode;
508
518
 
509
519
 	INIT_LIST_HEAD(&shadow->frozen_buffers);
510
-	address_space_init_once(&shadow->frozen_data);
511
-	nilfs_mapping_init(&shadow->frozen_data, inode);
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-	address_space_init_once(&shadow->frozen_btnodes);
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-	nilfs_mapping_init(&shadow->frozen_btnodes, inode);
520
+
521
+	s_inode = nilfs_iget_for_shadow(inode);
522
+	if (IS_ERR(s_inode))
523
+		return PTR_ERR(s_inode);
524
+
525
+	shadow->inode = s_inode;
514
526
 	mi->mi_shadow = shadow;
515
527
 	return 0;
516
528
 }
..
..
@@ -524,14 +536,15 @@
524
536
 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);
525
537
 	struct nilfs_inode_info *ii = NILFS_I(inode);
526
538
 	struct nilfs_shadow_map *shadow = mi->mi_shadow;
539
+	struct inode *s_inode = shadow->inode;
527
540
 	int ret;
528
541
 
529
-	ret = nilfs_copy_dirty_pages(&shadow->frozen_data, inode->i_mapping);
542
+	ret = nilfs_copy_dirty_pages(s_inode->i_mapping, inode->i_mapping);
530
543
 	if (ret)
531
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 		goto out;
532
545
 
533
-	ret = nilfs_copy_dirty_pages(&shadow->frozen_btnodes,
534
-				     &ii->i_btnode_cache);
546
+	ret = nilfs_copy_dirty_pages(NILFS_I(s_inode)->i_assoc_inode->i_mapping,
547
+				     ii->i_assoc_inode->i_mapping);
535
548
 	if (ret)
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549
 		goto out;
537
550
 
..
..
@@ -547,7 +560,7 @@
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 	struct page *page;
548
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 	int blkbits = inode->i_blkbits;
549
562
 
550
-	page = grab_cache_page(&shadow->frozen_data, bh->b_page->index);
563
+	page = grab_cache_page(shadow->inode->i_mapping, bh->b_page->index);
551
564
 	if (!page)
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 		return -ENOMEM;
553
566
 
..
..
@@ -579,7 +592,7 @@
579
592
 	struct page *page;
580
593
 	int n;
581
594
 
582
-	page = find_lock_page(&shadow->frozen_data, bh->b_page->index);
595
+	page = find_lock_page(shadow->inode->i_mapping, bh->b_page->index);
583
596
 	if (page) {
584
597
 		if (page_has_buffers(page)) {
585
598
 			n = bh_offset(bh) >> inode->i_blkbits;
..
..
@@ -620,10 +633,11 @@
620
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 		nilfs_palloc_clear_cache(inode);
621
634
 
622
635
 	nilfs_clear_dirty_pages(inode->i_mapping, true);
623
-	nilfs_copy_back_pages(inode->i_mapping, &shadow->frozen_data);
636
+	nilfs_copy_back_pages(inode->i_mapping, shadow->inode->i_mapping);
624
637
 
625
-	nilfs_clear_dirty_pages(&ii->i_btnode_cache, true);
626
-	nilfs_copy_back_pages(&ii->i_btnode_cache, &shadow->frozen_btnodes);
638
+	nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping, true);
639
+	nilfs_copy_back_pages(ii->i_assoc_inode->i_mapping,
640
+			      NILFS_I(shadow->inode)->i_assoc_inode->i_mapping);
627
641
 
628
642
 	nilfs_bmap_restore(ii->i_bmap, &shadow->bmap_store);
629
643
 
..
..
@@ -638,10 +652,11 @@
638
652
 {
639
653
 	struct nilfs_mdt_info *mi = NILFS_MDT(inode);
640
654
 	struct nilfs_shadow_map *shadow = mi->mi_shadow;
655
+	struct inode *shadow_btnc_inode = NILFS_I(shadow->inode)->i_assoc_inode;
641
656
 
642
657
 	down_write(&mi->mi_sem);
643
658
 	nilfs_release_frozen_buffers(shadow);
644
-	truncate_inode_pages(&shadow->frozen_data, 0);
645
-	truncate_inode_pages(&shadow->frozen_btnodes, 0);
659
+	truncate_inode_pages(shadow->inode->i_mapping, 0);
660
+	truncate_inode_pages(shadow_btnc_inode->i_mapping, 0);
646
661
 	up_write(&mi->mi_sem);
647
662
 }