mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race
[linux/fpc-iii.git] / fs / btrfs / print-tree.c
blobf96eb176166d9df7376db884770befb5c0658c11
1 /*
2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include "ctree.h"
20 #include "disk-io.h"
21 #include "print-tree.h"
23 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
25 int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
26 int i;
27 pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
28 btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
29 btrfs_chunk_type(eb, chunk), num_stripes);
30 for (i = 0 ; i < num_stripes ; i++) {
31 pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
32 btrfs_stripe_devid_nr(eb, chunk, i),
33 btrfs_stripe_offset_nr(eb, chunk, i));
36 static void print_dev_item(struct extent_buffer *eb,
37 struct btrfs_dev_item *dev_item)
39 pr_info("\t\tdev item devid %llu total_bytes %llu bytes used %llu\n",
40 btrfs_device_id(eb, dev_item),
41 btrfs_device_total_bytes(eb, dev_item),
42 btrfs_device_bytes_used(eb, dev_item));
44 static void print_extent_data_ref(struct extent_buffer *eb,
45 struct btrfs_extent_data_ref *ref)
47 pr_cont("extent data backref root %llu objectid %llu offset %llu count %u\n",
48 btrfs_extent_data_ref_root(eb, ref),
49 btrfs_extent_data_ref_objectid(eb, ref),
50 btrfs_extent_data_ref_offset(eb, ref),
51 btrfs_extent_data_ref_count(eb, ref));
54 static void print_extent_item(struct extent_buffer *eb, int slot, int type)
56 struct btrfs_extent_item *ei;
57 struct btrfs_extent_inline_ref *iref;
58 struct btrfs_extent_data_ref *dref;
59 struct btrfs_shared_data_ref *sref;
60 struct btrfs_disk_key key;
61 unsigned long end;
62 unsigned long ptr;
63 u32 item_size = btrfs_item_size_nr(eb, slot);
64 u64 flags;
65 u64 offset;
66 int ref_index = 0;
68 if (item_size < sizeof(*ei)) {
69 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
70 struct btrfs_extent_item_v0 *ei0;
71 BUG_ON(item_size != sizeof(*ei0));
72 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
73 pr_info("\t\textent refs %u\n",
74 btrfs_extent_refs_v0(eb, ei0));
75 return;
76 #else
77 BUG();
78 #endif
81 ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
82 flags = btrfs_extent_flags(eb, ei);
84 pr_info("\t\textent refs %llu gen %llu flags %llu\n",
85 btrfs_extent_refs(eb, ei), btrfs_extent_generation(eb, ei),
86 flags);
88 if ((type == BTRFS_EXTENT_ITEM_KEY) &&
89 flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
90 struct btrfs_tree_block_info *info;
91 info = (struct btrfs_tree_block_info *)(ei + 1);
92 btrfs_tree_block_key(eb, info, &key);
93 pr_info("\t\ttree block key (%llu %u %llu) level %d\n",
94 btrfs_disk_key_objectid(&key), key.type,
95 btrfs_disk_key_offset(&key),
96 btrfs_tree_block_level(eb, info));
97 iref = (struct btrfs_extent_inline_ref *)(info + 1);
98 } else {
99 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
102 ptr = (unsigned long)iref;
103 end = (unsigned long)ei + item_size;
104 while (ptr < end) {
105 iref = (struct btrfs_extent_inline_ref *)ptr;
106 type = btrfs_extent_inline_ref_type(eb, iref);
107 offset = btrfs_extent_inline_ref_offset(eb, iref);
108 pr_info("\t\tref#%d: ", ref_index++);
109 switch (type) {
110 case BTRFS_TREE_BLOCK_REF_KEY:
111 pr_cont("tree block backref root %llu\n", offset);
112 break;
113 case BTRFS_SHARED_BLOCK_REF_KEY:
114 pr_cont("shared block backref parent %llu\n", offset);
116 * offset is supposed to be a tree block which
117 * must be aligned to nodesize.
119 if (!IS_ALIGNED(offset, eb->fs_info->sectorsize))
120 pr_info(
121 "\t\t\t(parent %llu not aligned to sectorsize %u)\n",
122 offset, eb->fs_info->sectorsize);
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 pr_cont("shared data backref parent %llu count %u\n",
131 offset, btrfs_shared_data_ref_count(eb, sref));
133 * offset is supposed to be a tree block which
134 * must be aligned to nodesize.
136 if (!IS_ALIGNED(offset, eb->fs_info->nodesize))
137 pr_info(
138 "\t\t\t(parent %llu not aligned to sectorsize %u)\n",
139 offset, eb->fs_info->sectorsize);
140 break;
141 default:
142 pr_cont("(extent %llu has INVALID ref type %d)\n",
143 eb->start, type);
144 return;
146 ptr += btrfs_extent_inline_ref_size(type);
148 WARN_ON(ptr > end);
151 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
152 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
154 struct btrfs_extent_ref_v0 *ref0;
156 ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
157 printk("\t\textent back ref root %llu gen %llu owner %llu num_refs %lu\n",
158 btrfs_ref_root_v0(eb, ref0),
159 btrfs_ref_generation_v0(eb, ref0),
160 btrfs_ref_objectid_v0(eb, ref0),
161 (unsigned long)btrfs_ref_count_v0(eb, ref0));
163 #endif
165 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
166 u32 item_size)
168 if (!IS_ALIGNED(item_size, sizeof(u64))) {
169 pr_warn("BTRFS: uuid item with illegal size %lu!\n",
170 (unsigned long)item_size);
171 return;
173 while (item_size) {
174 __le64 subvol_id;
176 read_extent_buffer(l, &subvol_id, offset, sizeof(subvol_id));
177 pr_info("\t\tsubvol_id %llu\n",
178 (unsigned long long)le64_to_cpu(subvol_id));
179 item_size -= sizeof(u64);
180 offset += sizeof(u64);
184 void btrfs_print_leaf(struct extent_buffer *l)
186 struct btrfs_fs_info *fs_info;
187 int i;
188 u32 type, nr;
189 struct btrfs_item *item;
190 struct btrfs_root_item *ri;
191 struct btrfs_dir_item *di;
192 struct btrfs_inode_item *ii;
193 struct btrfs_block_group_item *bi;
194 struct btrfs_file_extent_item *fi;
195 struct btrfs_extent_data_ref *dref;
196 struct btrfs_shared_data_ref *sref;
197 struct btrfs_dev_extent *dev_extent;
198 struct btrfs_key key;
199 struct btrfs_key found_key;
201 if (!l)
202 return;
204 fs_info = l->fs_info;
205 nr = btrfs_header_nritems(l);
207 btrfs_info(fs_info, "leaf %llu total ptrs %d free space %d",
208 btrfs_header_bytenr(l), nr,
209 btrfs_leaf_free_space(fs_info, l));
210 for (i = 0 ; i < nr ; i++) {
211 item = btrfs_item_nr(i);
212 btrfs_item_key_to_cpu(l, &key, i);
213 type = key.type;
214 pr_info("\titem %d key (%llu %u %llu) itemoff %d itemsize %d\n",
215 i, key.objectid, type, key.offset,
216 btrfs_item_offset(l, item), btrfs_item_size(l, item));
217 switch (type) {
218 case BTRFS_INODE_ITEM_KEY:
219 ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
220 pr_info("\t\tinode generation %llu size %llu mode %o\n",
221 btrfs_inode_generation(l, ii),
222 btrfs_inode_size(l, ii),
223 btrfs_inode_mode(l, ii));
224 break;
225 case BTRFS_DIR_ITEM_KEY:
226 di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
227 btrfs_dir_item_key_to_cpu(l, di, &found_key);
228 pr_info("\t\tdir oid %llu type %u\n",
229 found_key.objectid,
230 btrfs_dir_type(l, di));
231 break;
232 case BTRFS_ROOT_ITEM_KEY:
233 ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
234 pr_info("\t\troot data bytenr %llu refs %u\n",
235 btrfs_disk_root_bytenr(l, ri),
236 btrfs_disk_root_refs(l, ri));
237 break;
238 case BTRFS_EXTENT_ITEM_KEY:
239 case BTRFS_METADATA_ITEM_KEY:
240 print_extent_item(l, i, type);
241 break;
242 case BTRFS_TREE_BLOCK_REF_KEY:
243 pr_info("\t\ttree block backref\n");
244 break;
245 case BTRFS_SHARED_BLOCK_REF_KEY:
246 pr_info("\t\tshared block backref\n");
247 break;
248 case BTRFS_EXTENT_DATA_REF_KEY:
249 dref = btrfs_item_ptr(l, i,
250 struct btrfs_extent_data_ref);
251 print_extent_data_ref(l, dref);
252 break;
253 case BTRFS_SHARED_DATA_REF_KEY:
254 sref = btrfs_item_ptr(l, i,
255 struct btrfs_shared_data_ref);
256 pr_info("\t\tshared data backref count %u\n",
257 btrfs_shared_data_ref_count(l, sref));
258 break;
259 case BTRFS_EXTENT_DATA_KEY:
260 fi = btrfs_item_ptr(l, i,
261 struct btrfs_file_extent_item);
262 if (btrfs_file_extent_type(l, fi) ==
263 BTRFS_FILE_EXTENT_INLINE) {
264 pr_info("\t\tinline extent data size %llu\n",
265 btrfs_file_extent_ram_bytes(l, fi));
266 break;
268 pr_info("\t\textent data disk bytenr %llu nr %llu\n",
269 btrfs_file_extent_disk_bytenr(l, fi),
270 btrfs_file_extent_disk_num_bytes(l, fi));
271 pr_info("\t\textent data offset %llu nr %llu ram %llu\n",
272 btrfs_file_extent_offset(l, fi),
273 btrfs_file_extent_num_bytes(l, fi),
274 btrfs_file_extent_ram_bytes(l, fi));
275 break;
276 case BTRFS_EXTENT_REF_V0_KEY:
277 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
278 print_extent_ref_v0(l, i);
279 #else
280 BUG();
281 #endif
282 break;
283 case BTRFS_BLOCK_GROUP_ITEM_KEY:
284 bi = btrfs_item_ptr(l, i,
285 struct btrfs_block_group_item);
286 pr_info(
287 "\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
288 btrfs_disk_block_group_used(l, bi),
289 btrfs_disk_block_group_chunk_objectid(l, bi),
290 btrfs_disk_block_group_flags(l, bi));
291 break;
292 case BTRFS_CHUNK_ITEM_KEY:
293 print_chunk(l, btrfs_item_ptr(l, i,
294 struct btrfs_chunk));
295 break;
296 case BTRFS_DEV_ITEM_KEY:
297 print_dev_item(l, btrfs_item_ptr(l, i,
298 struct btrfs_dev_item));
299 break;
300 case BTRFS_DEV_EXTENT_KEY:
301 dev_extent = btrfs_item_ptr(l, i,
302 struct btrfs_dev_extent);
303 pr_info("\t\tdev extent chunk_tree %llu\n\t\tchunk objectid %llu chunk offset %llu length %llu\n",
304 btrfs_dev_extent_chunk_tree(l, dev_extent),
305 btrfs_dev_extent_chunk_objectid(l, dev_extent),
306 btrfs_dev_extent_chunk_offset(l, dev_extent),
307 btrfs_dev_extent_length(l, dev_extent));
308 break;
309 case BTRFS_PERSISTENT_ITEM_KEY:
310 pr_info("\t\tpersistent item objectid %llu offset %llu\n",
311 key.objectid, key.offset);
312 switch (key.objectid) {
313 case BTRFS_DEV_STATS_OBJECTID:
314 pr_info("\t\tdevice stats\n");
315 break;
316 default:
317 pr_info("\t\tunknown persistent item\n");
319 break;
320 case BTRFS_TEMPORARY_ITEM_KEY:
321 pr_info("\t\ttemporary item objectid %llu offset %llu\n",
322 key.objectid, key.offset);
323 switch (key.objectid) {
324 case BTRFS_BALANCE_OBJECTID:
325 pr_info("\t\tbalance status\n");
326 break;
327 default:
328 pr_info("\t\tunknown temporary item\n");
330 break;
331 case BTRFS_DEV_REPLACE_KEY:
332 pr_info("\t\tdev replace\n");
333 break;
334 case BTRFS_UUID_KEY_SUBVOL:
335 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
336 print_uuid_item(l, btrfs_item_ptr_offset(l, i),
337 btrfs_item_size_nr(l, i));
338 break;
343 void btrfs_print_tree(struct extent_buffer *c)
345 struct btrfs_fs_info *fs_info;
346 int i; u32 nr;
347 struct btrfs_key key;
348 int level;
350 if (!c)
351 return;
352 fs_info = c->fs_info;
353 nr = btrfs_header_nritems(c);
354 level = btrfs_header_level(c);
355 if (level == 0) {
356 btrfs_print_leaf(c);
357 return;
359 btrfs_info(fs_info,
360 "node %llu level %d total ptrs %d free spc %u",
361 btrfs_header_bytenr(c), level, nr,
362 (u32)BTRFS_NODEPTRS_PER_BLOCK(fs_info) - nr);
363 for (i = 0; i < nr; i++) {
364 btrfs_node_key_to_cpu(c, &key, i);
365 pr_info("\tkey %d (%llu %u %llu) block %llu\n",
366 i, key.objectid, key.type, key.offset,
367 btrfs_node_blockptr(c, i));
369 for (i = 0; i < nr; i++) {
370 struct extent_buffer *next = read_tree_block(fs_info,
371 btrfs_node_blockptr(c, i),
372 btrfs_node_ptr_generation(c, i));
373 if (IS_ERR(next)) {
374 continue;
375 } else if (!extent_buffer_uptodate(next)) {
376 free_extent_buffer(next);
377 continue;
380 if (btrfs_is_leaf(next) &&
381 level != 1)
382 BUG();
383 if (btrfs_header_level(next) !=
384 level - 1)
385 BUG();
386 btrfs_print_tree(next);
387 free_extent_buffer(next);