Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[linux-2.6-block.git] / fs / btrfs / extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0c097f3aec418564e25df5b7e0af8d9a81a79d1d..bcd59c7dfb574def82517a80affe6a9ddf756a92 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3412,7 +3412,7 @@ again:
         * our reservation.
         */
        if (unused <= space_info->total_bytes) {
-               unused -= space_info->total_bytes;
+               unused = space_info->total_bytes - unused;
                if (unused >= num_bytes) {
                        if (!reserved)
                                space_info->bytes_reserved += orig_bytes;