diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1b151af25772..b8b67ab05f72 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2032,7 +2032,6 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	unsigned factor = 1;
 	struct btrfs_block_rsv *block_rsv = &fs_info->global_block_rsv;
 	int ret;
-	u64 thresh = 0;
 	int mixed = 0;
 
 	rcu_read_lock();
@@ -2085,26 +2084,9 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	if (ret)
 		return ret;
 	buf->f_bavail += div_u64(total_free_data, factor);
+	buf->f_bavail -= block_rsv->size;
 	buf->f_bavail = buf->f_bavail >> bits;
 
-	/*
-	 * We calculate the remaining metadata space minus global reserve. If
-	 * this is (supposedly) smaller than zero, there's no space. But this
-	 * does not hold in practice, the exhausted state happens where's still
-	 * some positive delta. So we apply some guesswork and compare the
-	 * delta to a 4M threshold.  (Practically observed delta was ~2M.)
-	 *
-	 * We probably cannot calculate the exact threshold value because this
-	 * depends on the internal reservations requested by various
-	 * operations, so some operations that consume a few metadata will
-	 * succeed even if the Avail is zero. But this is better than the other
-	 * way around.
-	 */
-	thresh = SZ_4M;
-
-	if (!mixed && total_free_meta - thresh < block_rsv->size)
-		buf->f_bavail = 0;
-
 	buf->f_type = BTRFS_SUPER_MAGIC;
 	buf->f_bsize = dentry->d_sb->s_blocksize;
 	buf->f_namelen = BTRFS_NAME_LEN;