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Diffstat (limited to 'fs/btrfs/print-tree.c')
-rw-r--r--fs/btrfs/print-tree.c155
1 files changed, 138 insertions, 17 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 5f8f218c1005..6d6523da0a30 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -45,22 +45,132 @@ static void print_dev_item(struct extent_buffer *eb,
45 (unsigned long long)btrfs_device_total_bytes(eb, dev_item), 45 (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
46 (unsigned long long)btrfs_device_bytes_used(eb, dev_item)); 46 (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
47} 47}
48static void print_extent_data_ref(struct extent_buffer *eb,
49 struct btrfs_extent_data_ref *ref)
50{
51 printk(KERN_INFO "\t\textent data backref root %llu "
52 "objectid %llu offset %llu count %u\n",
53 (unsigned long long)btrfs_extent_data_ref_root(eb, ref),
54 (unsigned long long)btrfs_extent_data_ref_objectid(eb, ref),
55 (unsigned long long)btrfs_extent_data_ref_offset(eb, ref),
56 btrfs_extent_data_ref_count(eb, ref));
57}
58
59static void print_extent_item(struct extent_buffer *eb, int slot)
60{
61 struct btrfs_extent_item *ei;
62 struct btrfs_extent_inline_ref *iref;
63 struct btrfs_extent_data_ref *dref;
64 struct btrfs_shared_data_ref *sref;
65 struct btrfs_disk_key key;
66 unsigned long end;
67 unsigned long ptr;
68 int type;
69 u32 item_size = btrfs_item_size_nr(eb, slot);
70 u64 flags;
71 u64 offset;
72
73 if (item_size < sizeof(*ei)) {
74#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
75 struct btrfs_extent_item_v0 *ei0;
76 BUG_ON(item_size != sizeof(*ei0));
77 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
78 printk(KERN_INFO "\t\textent refs %u\n",
79 btrfs_extent_refs_v0(eb, ei0));
80 return;
81#else
82 BUG();
83#endif
84 }
85
86 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
87 flags = btrfs_extent_flags(eb, ei);
88
89 printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n",
90 (unsigned long long)btrfs_extent_refs(eb, ei),
91 (unsigned long long)btrfs_extent_generation(eb, ei),
92 (unsigned long long)flags);
93
94 if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
95 struct btrfs_tree_block_info *info;
96 info = (struct btrfs_tree_block_info *)(ei + 1);
97 btrfs_tree_block_key(eb, info, &key);
98 printk(KERN_INFO "\t\ttree block key (%llu %x %llu) "
99 "level %d\n",
100 (unsigned long long)btrfs_disk_key_objectid(&key),
101 key.type,
102 (unsigned long long)btrfs_disk_key_offset(&key),
103 btrfs_tree_block_level(eb, info));
104 iref = (struct btrfs_extent_inline_ref *)(info + 1);
105 } else {
106 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
107 }
108
109 ptr = (unsigned long)iref;
110 end = (unsigned long)ei + item_size;
111 while (ptr < end) {
112 iref = (struct btrfs_extent_inline_ref *)ptr;
113 type = btrfs_extent_inline_ref_type(eb, iref);
114 offset = btrfs_extent_inline_ref_offset(eb, iref);
115 switch (type) {
116 case BTRFS_TREE_BLOCK_REF_KEY:
117 printk(KERN_INFO "\t\ttree block backref "
118 "root %llu\n", (unsigned long long)offset);
119 break;
120 case BTRFS_SHARED_BLOCK_REF_KEY:
121 printk(KERN_INFO "\t\tshared block backref "
122 "parent %llu\n", (unsigned long long)offset);
123 break;
124 case BTRFS_EXTENT_DATA_REF_KEY:
125 dref = (struct btrfs_extent_data_ref *)(&iref->offset);
126 print_extent_data_ref(eb, dref);
127 break;
128 case BTRFS_SHARED_DATA_REF_KEY:
129 sref = (struct btrfs_shared_data_ref *)(iref + 1);
130 printk(KERN_INFO "\t\tshared data backref "
131 "parent %llu count %u\n",
132 (unsigned long long)offset,
133 btrfs_shared_data_ref_count(eb, sref));
134 break;
135 default:
136 BUG();
137 }
138 ptr += btrfs_extent_inline_ref_size(type);
139 }
140 WARN_ON(ptr > end);
141}
142
143#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
144static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
145{
146 struct btrfs_extent_ref_v0 *ref0;
147
148 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
149 printk("\t\textent back ref root %llu gen %llu "
150 "owner %llu num_refs %lu\n",
151 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
152 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
153 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
154 (unsigned long)btrfs_ref_count_v0(eb, ref0));
155}
156#endif
157
48void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) 158void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
49{ 159{
50 int i; 160 int i;
161 u32 type;
51 u32 nr = btrfs_header_nritems(l); 162 u32 nr = btrfs_header_nritems(l);
52 struct btrfs_item *item; 163 struct btrfs_item *item;
53 struct btrfs_extent_item *ei;
54 struct btrfs_root_item *ri; 164 struct btrfs_root_item *ri;
55 struct btrfs_dir_item *di; 165 struct btrfs_dir_item *di;
56 struct btrfs_inode_item *ii; 166 struct btrfs_inode_item *ii;
57 struct btrfs_block_group_item *bi; 167 struct btrfs_block_group_item *bi;
58 struct btrfs_file_extent_item *fi; 168 struct btrfs_file_extent_item *fi;
169 struct btrfs_extent_data_ref *dref;
170 struct btrfs_shared_data_ref *sref;
171 struct btrfs_dev_extent *dev_extent;
59 struct btrfs_key key; 172 struct btrfs_key key;
60 struct btrfs_key found_key; 173 struct btrfs_key found_key;
61 struct btrfs_extent_ref *ref;
62 struct btrfs_dev_extent *dev_extent;
63 u32 type;
64 174
65 printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n", 175 printk(KERN_INFO "leaf %llu total ptrs %d free space %d\n",
66 (unsigned long long)btrfs_header_bytenr(l), nr, 176 (unsigned long long)btrfs_header_bytenr(l), nr,
@@ -100,20 +210,25 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
100 btrfs_disk_root_refs(l, ri)); 210 btrfs_disk_root_refs(l, ri));
101 break; 211 break;
102 case BTRFS_EXTENT_ITEM_KEY: 212 case BTRFS_EXTENT_ITEM_KEY:
103 ei = btrfs_item_ptr(l, i, struct btrfs_extent_item); 213 print_extent_item(l, i);
104 printk(KERN_INFO "\t\textent data refs %u\n", 214 break;
105 btrfs_extent_refs(l, ei)); 215 case BTRFS_TREE_BLOCK_REF_KEY:
106 break; 216 printk(KERN_INFO "\t\ttree block backref\n");
107 case BTRFS_EXTENT_REF_KEY: 217 break;
108 ref = btrfs_item_ptr(l, i, struct btrfs_extent_ref); 218 case BTRFS_SHARED_BLOCK_REF_KEY:
109 printk(KERN_INFO "\t\textent back ref root %llu " 219 printk(KERN_INFO "\t\tshared block backref\n");
110 "gen %llu owner %llu num_refs %lu\n", 220 break;
111 (unsigned long long)btrfs_ref_root(l, ref), 221 case BTRFS_EXTENT_DATA_REF_KEY:
112 (unsigned long long)btrfs_ref_generation(l, ref), 222 dref = btrfs_item_ptr(l, i,
113 (unsigned long long)btrfs_ref_objectid(l, ref), 223 struct btrfs_extent_data_ref);
114 (unsigned long)btrfs_ref_num_refs(l, ref)); 224 print_extent_data_ref(l, dref);
225 break;
226 case BTRFS_SHARED_DATA_REF_KEY:
227 sref = btrfs_item_ptr(l, i,
228 struct btrfs_shared_data_ref);
229 printk(KERN_INFO "\t\tshared data backref count %u\n",
230 btrfs_shared_data_ref_count(l, sref));
115 break; 231 break;
116
117 case BTRFS_EXTENT_DATA_KEY: 232 case BTRFS_EXTENT_DATA_KEY:
118 fi = btrfs_item_ptr(l, i, 233 fi = btrfs_item_ptr(l, i,
119 struct btrfs_file_extent_item); 234 struct btrfs_file_extent_item);
@@ -139,6 +254,12 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
139 (unsigned long long) 254 (unsigned long long)
140 btrfs_file_extent_ram_bytes(l, fi)); 255 btrfs_file_extent_ram_bytes(l, fi));
141 break; 256 break;
257 case BTRFS_EXTENT_REF_V0_KEY:
258#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
259 print_extent_ref_v0(l, i);
260#else
261 BUG();
262#endif
142 case BTRFS_BLOCK_GROUP_ITEM_KEY: 263 case BTRFS_BLOCK_GROUP_ITEM_KEY:
143 bi = btrfs_item_ptr(l, i, 264 bi = btrfs_item_ptr(l, i,
144 struct btrfs_block_group_item); 265 struct btrfs_block_group_item);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-25 19:30:14 -0500