btrfs: use smaller type for btrfs_path reada

The possible values for reada are all positive and bounded, we can later
save some bytes by storing it in u8.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index a1cf4c813578..e5f9b96fc86f 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -596,7 +596,7 @@ struct btrfs_path {
         int slots[BTRFS_MAX_LEVEL];
         /* if there is real range locking, this locks field will change */
         int locks[BTRFS_MAX_LEVEL];
-        int reada;
+        u8 reada;
         /* keep some upper locks as we walk down */
         int lowest_level;