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Btrfs: Introduce BTRFS_BLOCK_GROUP_RAID56_MASK to check raid56 simply

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So we can check raid56 with:
 (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK)
instead of long:
 (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6))

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhao Lei 2015-01-20 15:11:44 +08:00 • committed by Chris Mason
commit ffe2d2034b
4 changed files with 19 additions and 28 deletions
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3
fs/btrfs/inode.c
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@ -7812,8 +7812,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
}
/* async crcs make it difficult to collect full stripe writes. */
if (btrfs_get_alloc_profile(root, 1) &
(BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6))
if (btrfs_get_alloc_profile(root, 1) & BTRFS_BLOCK_GROUP_RAID56_MASK)
async_submit = 0;
else
async_submit = 1;