btrfs: rip out btrfs_space_info::total_bytes_pinned

We used this in may_commit_transaction() in order to determine if we
needed to commit the transaction.  However we no longer have that logic
and thus have no use of this counter anymore, so delete it.

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

1 files changed, 0 insertions, 15 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 421120d6a14b..d296483d148f 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1804,19 +1804,6 @@ void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
 		nr_items += btrfs_csum_bytes_to_leaves(fs_info, head->num_bytes);
 	}
 
-	/*
-	 * We were dropping refs, or had a new ref and dropped it, and thus must
-	 * adjust down our total_bytes_pinned, the space may or may not have
-	 * been pinned and so is accounted for properly in the pinned space by
-	 * now.
-	 */
-	if (head->total_ref_mod < 0 ||
-	    (head->total_ref_mod == 0 && head->must_insert_reserved)) {
-		u64 flags = btrfs_ref_head_to_space_flags(head);
-
-		btrfs_mod_total_bytes_pinned(fs_info, flags, -head->num_bytes);
-	}
-
 	btrfs_delayed_refs_rsv_release(fs_info, nr_items);
 }
 
@@ -2551,7 +2538,6 @@ static int pin_down_extent(struct btrfs_trans_handle *trans,
 	spin_unlock(&cache->lock);
 	spin_unlock(&cache->space_info->lock);
 
-	__btrfs_mod_total_bytes_pinned(cache->space_info, num_bytes);
 	set_extent_dirty(&trans->transaction->pinned_extents, bytenr,
 			 bytenr + num_bytes - 1, GFP_NOFS | __GFP_NOFAIL);
 	return 0;
@@ -2762,7 +2748,6 @@ static int unpin_extent_range(struct btrfs_fs_info *fs_info,
 		cache->pinned -= len;
 		btrfs_space_info_update_bytes_pinned(fs_info, space_info, -len);
 		space_info->max_extent_size = 0;
-		__btrfs_mod_total_bytes_pinned(space_info, -len);
 		if (cache->ro) {
 			space_info->bytes_readonly += len;
 			readonly = true;