xfs: adjust the hint based zone allocation policy

As we really can't make any general assumptions about files that don't
have any life time hint set or are set to "NONE", adjust the allocation
policy to avoid co-locating data from those files with files with a set
life time.

Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>

Author: yhr

fs/xfs/xfs_zone_alloc.c

@@ -512,17 +512,11 @@ static const unsigned int
 xfs_zoned_hint_score[WRITE_LIFE_HINT_NR][WRITE_LIFE_HINT_NR] = {
 	[WRITE_LIFE_NOT_SET]	= {
 		[WRITE_LIFE_NOT_SET]	= XFS_ZONE_ALLOC_OK,
-		[WRITE_LIFE_NONE]	= XFS_ZONE_ALLOC_OK,
-		[WRITE_LIFE_SHORT]	= XFS_ZONE_ALLOC_OK,
 	},
 	[WRITE_LIFE_NONE]	= {
-		[WRITE_LIFE_NOT_SET]	= XFS_ZONE_ALLOC_OK,
-		[WRITE_LIFE_NONE]	= XFS_ZONE_ALLOC_GOOD,
-		[WRITE_LIFE_SHORT]	= XFS_ZONE_ALLOC_GOOD,
+		[WRITE_LIFE_NONE]	= XFS_ZONE_ALLOC_OK,
 	},
 	[WRITE_LIFE_SHORT]	= {
-		[WRITE_LIFE_NOT_SET]	= XFS_ZONE_ALLOC_GOOD,
-		[WRITE_LIFE_NONE]	= XFS_ZONE_ALLOC_GOOD,
 		[WRITE_LIFE_SHORT]	= XFS_ZONE_ALLOC_GOOD,
 	},
 	[WRITE_LIFE_MEDIUM]	= {