1 files changed, 18 insertions, 0 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 5b84205e7685..23e936c3de76 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3814,6 +3814,24 @@ int btrfs_block_rsv_add(struct btrfs_root *root,
         return ret;
 }
 
+int btrfs_block_rsv_add_noflush(struct btrfs_root *root,
+                                struct btrfs_block_rsv *block_rsv,
+                                u64 num_bytes)
+{
+        int ret;
+
+        if (num_bytes == 0)
+                return 0;
+
+        ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 0);
+        if (!ret) {
+                block_rsv_add_bytes(block_rsv, num_bytes, 1);
+                return 0;
+        }
+
+        return ret;
+}
+
 int btrfs_block_rsv_check(struct btrfs_root *root,
                           struct btrfs_block_rsv *block_rsv, int min_factor)
 {