Btrfs: Simplify num_stripes's calculation logical for __btrfs_alloc_chunk()

We can use this simple method to make source more readable.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c6c8009..bf3bec3 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2198,9 +2198,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
                min_stripes = 2;
        }
        if (type & (BTRFS_BLOCK_GROUP_RAID1)) {
-               num_stripes = min_t(u64, 2, fs_devices->rw_devices);
-               if (num_stripes < 2)
+               if (fs_devices->rw_devices < 2)
                        return -ENOSPC;
+               num_stripes = 2;
                min_stripes = 2;
        }
        if (type & (BTRFS_BLOCK_GROUP_RAID10)) {