From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Thu, 25 Mar 2010 12:32:59 +0000 (+0000)
Subject: Btrfs: Simplify num_stripes's calculation logical for __btrfs_alloc_chunk()
X-Git-Tag: v3.0~4995^2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f3eae7e8a5ed124bbc781e18ea10c21856017322;p=platform%2Fkernel%2Flinux-amlogic.git

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
--- 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)) {