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btrfs: use u8 for raid_array members

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The raid_attr table is now 7 * 56 = 392 bytes long, consisting of just
small numbers so we don't have to use ints. New size is 7 * 32 = 224,
saving 3 cachelines.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2019-05-17 11:43:36 +02:00
parent 946c9256c6
commit 8c3e3582a4
2 changed files with 11 additions and 11 deletions
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4
fs/btrfs/disk-io.c
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@@ -3704,7 +3704,7 @@ int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags)
if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 ||
(flags & BTRFS_AVAIL_ALLOC_BIT_SINGLE))
min_tolerated = min(min_tolerated,
min_tolerated = min_t(int, min_tolerated,
btrfs_raid_array[BTRFS_RAID_SINGLE].
tolerated_failures);
@@ -3713,7 +3713,7 @@ int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags)
continue;
if (!(flags & btrfs_raid_array[raid_type].bg_flag))
continue;
min_tolerated = min(min_tolerated,
min_tolerated = min_t(int, min_tolerated,
btrfs_raid_array[raid_type].
tolerated_failures);
}