Btrfs: Let some locks go during defrag and snapshot dropping
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 338a719..88b0752 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -354,6 +354,7 @@
mutex_unlock(&info->fs_mutex);
btrfs_btree_balance_dirty(root);
+ cond_resched();
mutex_lock(&info->fs_mutex);
trans = btrfs_start_transaction(tree_root, 1);
@@ -394,6 +395,12 @@
ret = err;
ret = btrfs_end_transaction(trans, tree_root);
BUG_ON(ret);
+ mutex_unlock(&tree_root->fs_info->fs_mutex);
+
+ btrfs_btree_balance_dirty(tree_root);
+ schedule();
+
+ mutex_lock(&tree_root->fs_info->fs_mutex);
}
BUG_ON(ret);
ret = btrfs_del_root(trans, tree_root, &dirty->root->root_key);
@@ -406,6 +413,7 @@
kfree(dirty);
mutex_unlock(&tree_root->fs_info->fs_mutex);
btrfs_btree_balance_dirty(tree_root);
+ schedule();
}
return ret;
}