linux-kernel - [PATCH] btrfs_read_block_groups: Use enums to index btrfs_space_info->block

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Date:	Tue, 16 Jul 2013 15:03:12 +0530
From:	chandan <chandan@...ux.vnet.ibm.com>
To:	Chris Mason <chris.mason@...ionio.com>,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] btrfs_read_block_groups: Use enums to index btrfs_space_info->block_groups.

>From 33e376755b8a928610032a1cef024dcdd980aee3 Mon Sep 17 00:00:00 2001
From: chandan <chandan@...ux.vnet.ibm.com>
Date: Tue, 16 Jul 2013 12:28:56 +0530
Subject: [PATCH] btrfs_read_block_groups: Use enums to index
 btrfs_space_info->block_groups.

The current code uses integer literals to index
btrfs_space_info->block_groups[] array. Instead use corresponding
enums from 'enum btrfs_raid_types'.

Signed-off-by: chandan <chandan@...ux.vnet.ibm.com>
---
 fs/btrfs/extent-tree.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0236de7..cb18077 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8394,9 +8394,13 @@ int btrfs_read_block_groups(struct btrfs_root *root)
 		 * avoid allocating from un-mirrored block group if there are
 		 * mirrored block groups.
 		 */
-		list_for_each_entry(cache, &space_info->block_groups[3], list)
+		list_for_each_entry(cache,
+				&space_info->block_groups[BTRFS_RAID_RAID0],
+				list)
 			set_block_group_ro(cache, 1);
-		list_for_each_entry(cache, &space_info->block_groups[4], list)
+		list_for_each_entry(cache,
+				&space_info->block_groups[BTRFS_RAID_SINGLE],
+				list)
 			set_block_group_ro(cache, 1);
 	}
 
-- 
1.8.3.1


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