Btrfs: Pass down the expected generation number when reading tree blocks
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index df95fb6..db07dde 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1338,7 +1338,8 @@
&extent_item, sizeof(extent_item));
clear_extent_bits(&info->extent_ins, start, end, EXTENT_LOCKED,
GFP_NOFS);
- eb = read_tree_block(extent_root, ins.objectid, ins.offset);
+ eb = read_tree_block(extent_root, ins.objectid, ins.offset,
+ trans->transid);
level = btrfs_header_level(eb);
if (level == 0) {
btrfs_item_key(eb, &first, 0);
@@ -2076,7 +2077,8 @@
}
}
mutex_unlock(&root->fs_info->fs_mutex);
- ret = readahead_tree_block(root, bytenr, blocksize);
+ ret = readahead_tree_block(root, bytenr, blocksize,
+ btrfs_node_ptr_generation(node, i));
last = bytenr + blocksize;
cond_resched();
mutex_lock(&root->fs_info->fs_mutex);
@@ -2096,6 +2098,7 @@
u64 root_owner;
u64 root_gen;
u64 bytenr;
+ u64 ptr_gen;
struct extent_buffer *next;
struct extent_buffer *cur;
struct extent_buffer *parent;
@@ -2132,6 +2135,7 @@
break;
}
bytenr = btrfs_node_blockptr(cur, path->slots[*level]);
+ ptr_gen = btrfs_node_ptr_generation(cur, path->slots[*level]);
blocksize = btrfs_level_size(root, *level - 1);
ret = lookup_extent_ref(trans, root, bytenr, blocksize, &refs);
BUG_ON(ret);
@@ -2152,7 +2156,8 @@
reada_walk_down(root, cur, path->slots[*level]);
mutex_unlock(&root->fs_info->fs_mutex);
- next = read_tree_block(root, bytenr, blocksize);
+ next = read_tree_block(root, bytenr, blocksize,
+ ptr_gen);
mutex_lock(&root->fs_info->fs_mutex);
/* we've dropped the lock, double check */
@@ -2173,8 +2178,6 @@
BUG_ON(ret);
continue;
}
- } else if (next) {
- btrfs_verify_block_csum(root, next);
}
WARN_ON(*level <= 0);
if (path->nodes[*level-1])
@@ -2609,7 +2612,7 @@
int i;
eb = read_tree_block(found_root, extent_key->objectid,
- extent_key->offset);
+ extent_key->offset, 0);
level = btrfs_header_level(eb);
if (level == 0)