* in the wrong place.
*/
static int verify_parent_transid(struct extent_io_tree *io_tree,
- struct extent_buffer *eb, u64 parent_transid)
+ struct extent_buffer *eb, u64 parent_transid,
+ int atomic)
{
struct extent_state *cached_state = NULL;
int ret;
if (!parent_transid || btrfs_header_generation(eb) == parent_transid)
return 0;
+ if (atomic)
+ return -EAGAIN;
+
lock_extent_bits(io_tree, eb->start, eb->start + eb->len - 1,
0, &cached_state);
if (extent_buffer_uptodate(eb) &&
ret = read_extent_buffer_pages(io_tree, eb, start,
WAIT_COMPLETE,
btree_get_extent, mirror_num);
- if (!ret && !verify_parent_transid(io_tree, eb, parent_transid))
+ if (!ret && !verify_parent_transid(io_tree, eb,
+ parent_transid, 0))
break;
/*
if (test_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags))
break;
- if (!failed_mirror) {
- failed = 1;
- printk(KERN_ERR "failed mirror was %d\n", eb->failed_mirror);
- failed_mirror = eb->failed_mirror;
- }
-
num_copies = btrfs_num_copies(&root->fs_info->mapping_tree,
eb->start, eb->len);
if (num_copies == 1)
break;
+ if (!failed_mirror) {
+ failed = 1;
+ failed_mirror = eb->read_mirror;
+ }
+
mirror_num++;
if (mirror_num == failed_mirror)
mirror_num++;
}
static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
- struct extent_state *state)
+ struct extent_state *state, int mirror)
{
struct extent_io_tree *tree;
u64 found_start;
if (!reads_done)
goto err;
+ eb->read_mirror = mirror;
if (test_bit(EXTENT_BUFFER_IOERR, &eb->bflags)) {
ret = -EIO;
goto err;
eb = (struct extent_buffer *)page->private;
set_bit(EXTENT_BUFFER_IOERR, &eb->bflags);
- eb->failed_mirror = failed_mirror;
+ eb->read_mirror = failed_mirror;
if (test_and_clear_bit(EXTENT_BUFFER_READAHEAD, &eb->bflags))
btree_readahead_hook(root, eb, eb->start, -EIO);
return -EIO; /* we fixed nothing */
root->commit_root = NULL;
root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item),
blocksize, generation);
- if (!root->node || !btrfs_buffer_uptodate(root->node, generation)) {
+ if (!root->node || !btrfs_buffer_uptodate(root->node, generation, 0)) {
free_extent_buffer(root->node);
root->node = NULL;
return -EIO;
BTRFS_I(fs_info->btree_inode)->root = tree_root;
memset(&BTRFS_I(fs_info->btree_inode)->location, 0,
sizeof(struct btrfs_key));
- BTRFS_I(fs_info->btree_inode)->dummy_inode = 1;
+ set_bit(BTRFS_INODE_DUMMY,
+ &BTRFS_I(fs_info->btree_inode)->runtime_flags);
insert_inode_hash(fs_info->btree_inode);
spin_lock_init(&fs_info->block_group_cache_lock);
features |= BTRFS_FEATURE_INCOMPAT_BIG_METADATA;
}
+ nodesize = btrfs_super_nodesize(disk_super);
+ leafsize = btrfs_super_leafsize(disk_super);
+ sectorsize = btrfs_super_sectorsize(disk_super);
+ stripesize = btrfs_super_stripesize(disk_super);
+
+ /*
+ * mixed block groups end up with duplicate but slightly offset
+ * extent buffers for the same range. It leads to corruptions
+ */
+ if ((features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) &&
+ (sectorsize != leafsize)) {
+ printk(KERN_WARNING "btrfs: unequal leaf/node/sector sizes "
+ "are not allowed for mixed block groups on %s\n",
+ sb->s_id);
+ goto fail_alloc;
+ }
+
btrfs_set_super_incompat_flags(disk_super, features);
features = btrfs_super_compat_ro_flags(disk_super) &
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
4 * 1024 * 1024 / PAGE_CACHE_SIZE);
- nodesize = btrfs_super_nodesize(disk_super);
- leafsize = btrfs_super_leafsize(disk_super);
- sectorsize = btrfs_super_sectorsize(disk_super);
- stripesize = btrfs_super_stripesize(disk_super);
tree_root->nodesize = nodesize;
tree_root->leafsize = leafsize;
tree_root->sectorsize = sectorsize;
goto fail_sb_buffer;
}
- if (sectorsize < PAGE_SIZE) {
- printk(KERN_WARNING "btrfs: Incompatible sector size "
- "found on %s\n", sb->s_id);
- goto fail_sb_buffer;
- }
-
- if ((features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) &&
- (leafsize != nodesize || sectorsize != nodesize)) {
- printk(KERN_WARNING "btrfs: unequal leaf/node/sector sizes "
- "are not allowed for mixed block groups on %s\n",
- sb->s_id);
+ if (sectorsize != PAGE_SIZE) {
+ printk(KERN_WARNING "btrfs: Incompatible sector size(%lu) "
+ "found on %s\n", (unsigned long)sectorsize, sb->s_id);
goto fail_sb_buffer;
}
return 0;
}
-int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid)
+int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid,
+ int atomic)
{
int ret;
struct inode *btree_inode = buf->pages[0]->mapping->host;
return ret;
ret = verify_parent_transid(&BTRFS_I(btree_inode)->io_tree, buf,
- parent_transid);
+ parent_transid, atomic);
+ if (ret == -EAGAIN)
+ return ret;
return !ret;
}
return 0;
}
-static int btree_writepage_io_failed_hook(struct bio *bio, struct page *page,
- u64 start, u64 end,
- struct extent_state *state)
-{
- struct super_block *sb = page->mapping->host->i_sb;
- struct btrfs_fs_info *fs_info = btrfs_sb(sb);
- btrfs_error(fs_info, -EIO,
- "Error occured while writing out btree at %llu", start);
- return -EIO;
-}
-
static struct extent_io_ops btree_extent_io_ops = {
.write_cache_pages_lock_hook = btree_lock_page_hook,
.readpage_end_io_hook = btree_readpage_end_io_hook,
.submit_bio_hook = btree_submit_bio_hook,
/* note we're sharing with inode.c for the merge bio hook */
.merge_bio_hook = btrfs_merge_bio_hook,
- .writepage_io_failed_hook = btree_writepage_io_failed_hook,
};