diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 7d5ec71615b8..8f4f2bd6d9b9 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -318,8 +318,8 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio,
 
 		if (page_offsets)
 			offset = page_offset(bvec.bv_page) + bvec.bv_offset;
-		count = btrfs_find_ordered_sum(inode, offset, disk_bytenr,
-					       csum, nblocks);
+		count = btrfs_find_ordered_sum(BTRFS_I(inode), offset,
+					       disk_bytenr, csum, nblocks);
 		if (count)
 			goto found;
 
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index d39a0fe4c463..c8a13d143877 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -861,20 +861,21 @@ out:
  * try to find a checksum.  This is used because we allow pages to
  * be reclaimed before their checksum is actually put into the btree
  */
-int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
-			   u8 *sum, int len)
+int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
+			   u64 disk_bytenr, u8 *sum, int len)
 {
-	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
+	struct btrfs_fs_info *fs_info = inode->root->fs_info;
 	struct btrfs_ordered_sum *ordered_sum;
 	struct btrfs_ordered_extent *ordered;
-	struct btrfs_ordered_inode_tree *tree = &BTRFS_I(inode)->ordered_tree;
+	struct btrfs_ordered_inode_tree *tree = &inode->ordered_tree;
 	unsigned long num_sectors;
 	unsigned long i;
-	u32 sectorsize = btrfs_inode_sectorsize(BTRFS_I(inode));
+	u32 sectorsize = btrfs_inode_sectorsize(inode);
+	const u8 blocksize_bits = inode->vfs_inode.i_sb->s_blocksize_bits;
 	const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
 	int index = 0;
 
-	ordered = btrfs_lookup_ordered_extent(BTRFS_I(inode), offset);
+	ordered = btrfs_lookup_ordered_extent(inode, offset);
 	if (!ordered)
 		return 0;
 
@@ -882,10 +883,8 @@ int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
 	list_for_each_entry_reverse(ordered_sum, &ordered->list, list) {
 		if (disk_bytenr >= ordered_sum->bytenr &&
 		    disk_bytenr < ordered_sum->bytenr + ordered_sum->len) {
-			i = (disk_bytenr - ordered_sum->bytenr) >>
-			    inode->i_sb->s_blocksize_bits;
-			num_sectors = ordered_sum->len >>
-				      inode->i_sb->s_blocksize_bits;
+			i = (disk_bytenr - ordered_sum->bytenr) >> blocksize_bits;
+			num_sectors = ordered_sum->len >> blocksize_bits;
 			num_sectors = min_t(int, len - index, num_sectors - i);
 			memcpy(sum + index, ordered_sum->sums + i * csum_size,
 			       num_sectors * csum_size);
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 1610195c6097..6a1d5bf5aee3 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -185,8 +185,8 @@ struct btrfs_ordered_extent *btrfs_lookup_ordered_range(
 		u64 len);
 void btrfs_get_ordered_extents_for_logging(struct btrfs_inode *inode,
 					   struct list_head *list);
-int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
-			   u8 *sum, int len);
+int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
+			   u64 disk_bytenr, u8 *sum, int len);
 u64 btrfs_wait_ordered_extents(struct btrfs_root *root, u64 nr,
 			       const u64 range_start, const u64 range_len);
 void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr,