Btrfs: add transaction space reservation tracepoints

There are a few places where we add to trans->bytes_reserved but don't have the
corresponding trace point.  With these added my tool no longer sees transaction
leaks.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index b6031ce..e9e95ef 100644 (file)
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -637,6 +637,8 @@ struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv(
 
        trans->block_rsv = &root->fs_info->trans_block_rsv;
        trans->bytes_reserved = num_bytes;
+       trace_btrfs_space_reservation(root->fs_info, "transaction",
+                                     trans->transid, num_bytes, 1);
 
        return trans;
 }
@@ -1375,7 +1377,9 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
        rsv = trans->block_rsv;
        trans->block_rsv = &pending->block_rsv;
        trans->bytes_reserved = trans->block_rsv->reserved;
-
+       trace_btrfs_space_reservation(root->fs_info, "transaction",
+                                     trans->transid,
+                                     trans->bytes_reserved, 1);
        dentry = pending->dentry;
        parent_inode = pending->dir;
        parent_root = BTRFS_I(parent_inode)->root;