From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

Use memcpy_to_folio() instead of open-coding it, and use offset_in_folio()
in case anybody wants to use nilfs2 on a device with large blocks.

[ konishi.ryusuke: added label name change ]
Link: https://lkml.kernel.org/r/20241002150036.1339475-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
---
 fs/nilfs2/recovery.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index 21d81097a89f..e43405bf521e 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -481,19 +481,16 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
 
 static int nilfs_recovery_copy_block(struct the_nilfs *nilfs,
 				     struct nilfs_recovery_block *rb,
-				     loff_t pos, struct page *page)
+				     loff_t pos, struct folio *folio)
 {
 	struct buffer_head *bh_org;
-	size_t from = pos & ~PAGE_MASK;
-	void *kaddr;
+	size_t from = offset_in_folio(folio, pos);
 
 	bh_org = __bread(nilfs->ns_bdev, rb->blocknr, nilfs->ns_blocksize);
 	if (unlikely(!bh_org))
 		return -EIO;
 
-	kaddr = kmap_local_page(page);
-	memcpy(kaddr + from, bh_org->b_data, bh_org->b_size);
-	kunmap_local(kaddr);
+	memcpy_to_folio(folio, from, bh_org->b_data, bh_org->b_size);
 	brelse(bh_org);
 	return 0;
 }
@@ -531,13 +528,13 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
 			goto failed_inode;
 		}
 
-		err = nilfs_recovery_copy_block(nilfs, rb, pos, &folio->page);
+		err = nilfs_recovery_copy_block(nilfs, rb, pos, folio);
 		if (unlikely(err))
-			goto failed_page;
+			goto failed_folio;
 
 		err = nilfs_set_file_dirty(inode, 1);
 		if (unlikely(err))
-			goto failed_page;
+			goto failed_folio;
 
 		block_write_end(NULL, inode->i_mapping, pos, blocksize,
 				blocksize, folio, NULL);
@@ -548,7 +545,7 @@ static int nilfs_recover_dsync_blocks(struct the_nilfs *nilfs,
 		(*nr_salvaged_blocks)++;
 		goto next;
 
- failed_page:
+ failed_folio:
 		folio_unlock(folio);
 		folio_put(folio);
 
-- 
2.43.0