1 files changed, 55 insertions, 23 deletions

diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 61f44e78e3c9..dd8777872143 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -7,6 +7,45 @@
 #include "disk-io.h"
 #include "print-tree.h"
 
+struct root_name_map {
+	u64 id;
+	char name[16];
+};
+
+static const struct root_name_map root_map[] = {
+	{ BTRFS_ROOT_TREE_OBJECTID,		"ROOT_TREE"		},
+	{ BTRFS_EXTENT_TREE_OBJECTID,		"EXTENT_TREE"		},
+	{ BTRFS_CHUNK_TREE_OBJECTID,		"CHUNK_TREE"		},
+	{ BTRFS_DEV_TREE_OBJECTID,		"DEV_TREE"		},
+	{ BTRFS_FS_TREE_OBJECTID,		"FS_TREE"		},
+	{ BTRFS_CSUM_TREE_OBJECTID,		"CSUM_TREE"		},
+	{ BTRFS_TREE_LOG_OBJECTID,		"TREE_LOG"		},
+	{ BTRFS_QUOTA_TREE_OBJECTID,		"QUOTA_TREE"		},
+	{ BTRFS_UUID_TREE_OBJECTID,		"UUID_TREE"		},
+	{ BTRFS_FREE_SPACE_TREE_OBJECTID,	"FREE_SPACE_TREE"	},
+	{ BTRFS_BLOCK_GROUP_TREE_OBJECTID,	"BLOCK_GROUP_TREE"	},
+	{ BTRFS_DATA_RELOC_TREE_OBJECTID,	"DATA_RELOC_TREE"	},
+};
+
+const char *btrfs_root_name(const struct btrfs_key *key, char *buf)
+{
+	int i;
+
+	if (key->objectid == BTRFS_TREE_RELOC_OBJECTID) {
+		snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN,
+			 "TREE_RELOC offset=%llu", key->offset);
+		return buf;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(root_map); i++) {
+		if (root_map[i].id == key->objectid)
+			return root_map[i].name;
+	}
+
+	snprintf(buf, BTRFS_ROOT_NAME_BUF_LEN, "%llu", key->objectid);
+	return buf;
+}
+
 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 {
 	int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
@@ -47,7 +86,7 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
 	struct btrfs_disk_key key;
 	unsigned long end;
 	unsigned long ptr;
-	u32 item_size = btrfs_item_size_nr(eb, slot);
+	u32 item_size = btrfs_item_size(eb, slot);
 	u64 flags;
 	u64 offset;
 	int ref_index = 0;
@@ -95,9 +134,10 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
 			 * offset is supposed to be a tree block which
 			 * must be aligned to nodesize.
 			 */
-			if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
-				pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
-					offset, (unsigned long long)eb->fs_info->nodesize);
+			if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
+				pr_info(
+			"\t\t\t(parent %llu not aligned to sectorsize %u)\n",
+					offset, eb->fs_info->sectorsize);
 			break;
 		case BTRFS_EXTENT_DATA_REF_KEY:
 			dref = (struct btrfs_extent_data_ref *)(&iref->offset);
@@ -112,8 +152,9 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
 			 * must be aligned to nodesize.
 			 */
 			if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
-				pr_info("\t\t\t(parent %llu is NOT ALIGNED to nodesize %llu)\n",
-				     offset, (unsigned long long)eb->fs_info->nodesize);
+				pr_info(
+			"\t\t\t(parent %llu not aligned to sectorsize %u)\n",
+				     offset, eb->fs_info->sectorsize);
 			break;
 		default:
 			pr_cont("(extent %llu has INVALID ref type %d)\n",
@@ -137,8 +178,7 @@ static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 		__le64 subvol_id;
 
 		read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
-		pr_info("\t\tsubvol_id %llu\n",
-		       (unsigned long long)le64_to_cpu(subvol_id));
+		pr_info("\t\tsubvol_id %llu\n", le64_to_cpu(subvol_id));
 		item_size -= sizeof(u64);
 		offset += sizeof(u64);
 	}
@@ -151,15 +191,8 @@ static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 static void print_eb_refs_lock(struct extent_buffer *eb)
 {
 #ifdef CONFIG_BTRFS_DEBUG
-	btrfs_info(eb->fs_info,
-"refs %u lock (w:%d r:%d bw:%d br:%d sw:%d sr:%d) lock_owner %u current %u",
-		   atomic_read(&eb->refs), eb->write_locks,
-		   atomic_read(&eb->read_locks),
-		   eb->blocking_writers,
-		   atomic_read(&eb->blocking_readers),
-		   eb->spinning_writers,
-		   atomic_read(&eb->spinning_readers),
-		   eb->lock_owner, current->pid);
+	btrfs_info(eb->fs_info, "refs %u lock_owner %u current %u",
+		   atomic_read(&eb->refs), eb->lock_owner, current->pid);
 #endif
 }
 
@@ -168,7 +201,6 @@ void btrfs_print_leaf(struct extent_buffer *l)
 	struct btrfs_fs_info *fs_info;
 	int i;
 	u32 type, nr;
-	struct btrfs_item *item;
 	struct btrfs_root_item *ri;
 	struct btrfs_dir_item *di;
 	struct btrfs_inode_item *ii;
@@ -192,12 +224,11 @@ void btrfs_print_leaf(struct extent_buffer *l)
 		   btrfs_leaf_free_space(l), btrfs_header_owner(l));
 	print_eb_refs_lock(l);
 	for (i = 0 ; i < nr ; i++) {
-		item = btrfs_item_nr(i);
 		btrfs_item_key_to_cpu(l, &key, i);
 		type = key.type;
 		pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
 			i, key.objectid, type, key.offset,
-			btrfs_item_offset(l, item), btrfs_item_size(l, item));
+			btrfs_item_offset(l, i), btrfs_item_size(l, i));
 		switch (type) {
 		case BTRFS_INODE_ITEM_KEY:
 			ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
@@ -315,7 +346,7 @@ void btrfs_print_leaf(struct extent_buffer *l)
 		case BTRFS_UUID_KEY_SUBVOL:
 		case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 			print_uuid_item(l, btrfs_item_ptr_offset(l, i),
-					btrfs_item_size_nr(l, i));
+					btrfs_item_size(l, i));
 			break;
 		}
 	}
@@ -358,11 +389,12 @@ void btrfs_print_tree(struct extent_buffer *c, bool follow)
 
 		btrfs_node_key_to_cpu(c, &first_key, i);
 		next = read_tree_block(fs_info, btrfs_node_blockptr(c, i),
+				       btrfs_header_owner(c),
 				       btrfs_node_ptr_generation(c, i),
 				       level - 1, &first_key);
-		if (IS_ERR(next)) {
+		if (IS_ERR(next))
 			continue;
-		} else if (!extent_buffer_uptodate(next)) {
+		if (!extent_buffer_uptodate(next)) {
 			free_extent_buffer(next);
 			continue;
 		}