Btrfs: crash recovery fixes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7081729..d1bf5bc 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -270,14 +270,6 @@
return NULL;
}
-int dirty_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct buffer_head *buf)
-{
- WARN_ON(atomic_read(&buf->b_count) == 0);
- mark_buffer_dirty(buf);
- return 0;
-}
-
int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct buffer_head *buf)
{
@@ -621,6 +613,20 @@
return 0;
}
+void btrfs_mark_buffer_dirty(struct buffer_head *bh)
+{
+ struct btrfs_root *root = BTRFS_I(bh->b_page->mapping->host)->root;
+ u64 transid = btrfs_header_generation(btrfs_buffer_header(bh));
+ WARN_ON(!atomic_read(&bh->b_count));
+ if (transid != root->fs_info->generation) {
+ printk(KERN_CRIT "transid mismatch buffer %llu, found %Lu running %Lu\n",
+ (unsigned long long)bh->b_blocknr,
+ transid, root->fs_info->generation);
+ WARN_ON(1);
+ }
+ mark_buffer_dirty(bh);
+}
+
void btrfs_block_release(struct btrfs_root *root, struct buffer_head *buf)
{
brelse(buf);
