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 <[email protected]> --- fs/btrfs/disk-io.c | 4 ++-- fs/btrfs/volumes.h | 18 +++++++++--------- 2 files changed, 11 insertions(+), 11 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index cdd6e7ee76b6..c4a4e6c42456 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3709,7 +3709,7 @@ 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); @@ -3718,7 +3718,7 @@ 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); } diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 07156d974ac4..73520a6ed90a 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -336,16 +336,16 @@ struct btrfs_device_info { }; struct btrfs_raid_attr { - int sub_stripes; /* sub_stripes info for map */ - int dev_stripes; /* stripes per dev */ - int devs_max; /* max devs to use */ - int devs_min; /* min devs needed */ - int tolerated_failures; /* max tolerated fail devs */ - int devs_increment; /* ndevs has to be a multiple of this */ - int ncopies; /* how many copies to data has */ - int nparity; /* number of stripes worth of bytes to store + u8 sub_stripes; /* sub_stripes info for map */ + u8 dev_stripes; /* stripes per dev */ + u8 devs_max; /* max devs to use */ + u8 devs_min; /* min devs needed */ + u8 tolerated_failures; /* max tolerated fail devs */ + u8 devs_increment; /* ndevs has to be a multiple of this */ + u8 ncopies; /* how many copies to data has */ + u8 nparity; /* number of stripes worth of bytes to store * parity information */ - int mindev_error; /* error code if min devs requisite is unmet */ + u8 mindev_error; /* error code if min devs requisite is unmet */ const char raid_name[8]; /* name of the raid */ u64 bg_flag; /* block group flag of the raid */ }; -- 2.21.0
