btrfs: remove unnecessary extent root check in btrfs_defrag_leaves

We only defrag leaves on roots that have SHAREABLE set, so we don't need
to check if we're the extent root as it doesn't have SHAREABLE set.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 7c45d960b53c6d756a5952a61f092a95cd5a02a9..b6cf39f4e7e486f817d9fcd44c9deef9a6187c3b 100644 (file)
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -27,14 +27,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
        int next_key_ret = 0;
        u64 last_ret = 0;
 
-       if (root->fs_info->extent_root == root) {
-               /*
-                * there's recursion here right now in the tree locking,
-                * we can't defrag the extent root without deadlock
-                */
-               goto out;
-       }
-
        if (!test_bit(BTRFS_ROOT_SHAREABLE, &root->state))
                goto out;