[PATCH v2 2/2] btrfs-progs: ins: dump-tree: Print tree name for extent data/tree block backref

[Misono Tomohiro <misono.tomohiro@xxxxxxxxxxxxxx>]

Print tree name instead of number to make output more readable.

Example:
[before]
   extent data backref root 5 objectid 257 offset 16384 count 1
   
   tree block backref root 18446744073709551607

[after]
   extent data backref root FS_TREE objectid 257 offset 16384 count 1
   
   tree block backref root DATA_RELOC_TREE

Signed-off-by: Misono Tomohiro <misono.tomohiro@xxxxxxxxxxxxxx>
---
 v1 -> v2
   - Update extent data backref too
   - Add output example

 print-tree.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/print-tree.c b/print-tree.c
index 90173c2b..c5be5e6c 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -470,8 +470,9 @@ void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 		offset = btrfs_extent_inline_ref_offset(eb, iref);
 		switch (type) {
 		case BTRFS_TREE_BLOCK_REF_KEY:
-			printf("\t\ttree block backref root %llu\n",
-			       (unsigned long long)offset);
+			printf("\t\ttree block backref root ");
+			print_objectid(stdout, offset, 0);
+			printf("\n");
 			break;
 		case BTRFS_SHARED_BLOCK_REF_KEY:
 			printf("\t\tshared block backref parent %llu\n",
@@ -479,9 +480,10 @@ void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 			break;
 		case BTRFS_EXTENT_DATA_REF_KEY:
 			dref = (struct btrfs_extent_data_ref *)(&iref->offset);
-			printf("\t\textent data backref root %llu "
-			       "objectid %llu offset %lld count %u\n",
-			       (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
+			printf("\t\textent data backref root ");
+			print_objectid(stdout,
+		(unsigned long long)btrfs_extent_data_ref_root(eb, dref), 0);
+			printf(" objectid %llu offset %lld count %u\n",
 			       (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 			       btrfs_extent_data_ref_offset(eb, dref),
 			       btrfs_extent_data_ref_count(eb, dref));
@@ -1018,9 +1020,10 @@ static void print_extent_data_ref(struct extent_buffer *eb, int slot)
 	struct btrfs_extent_data_ref *dref;
 
 	dref = btrfs_item_ptr(eb, slot, struct btrfs_extent_data_ref);
-	printf("\t\textent data backref root %llu "
-		"objectid %llu offset %llu count %u\n",
-		(unsigned long long)btrfs_extent_data_ref_root(eb, dref),
+	printf("\t\textent data backref root ");
+	print_objectid(stdout,
+		(unsigned long long)btrfs_extent_data_ref_root(eb, dref), 0);
+	printf(" objectid %llu offset %llu count %u\n",
 		(unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 		(unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 		btrfs_extent_data_ref_count(eb, dref));
-- 
2.14.3

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