diff options
| author | David Sterba <dsterba@suse.com> | 2019-05-17 12:43:36 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-07-01 14:34:57 +0300 |
| commit | 8c3e3582a4f0dbdaea49cfd71640a626c8bb7134 (patch) | |
| tree | b45ec48368abc4aa5122508bc1ec2caaae5f1835 /fs/btrfs | |
| parent | 946c9256c6fabe8d3fe8e076df1c4290dcd778f2 (diff) | |
| download | linux-8c3e3582a4f0dbdaea49cfd71640a626c8bb7134.tar.xz | |
btrfs: use u8 for raid_array members
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>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 4 | ||||
| -rw-r--r-- | 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 03e703d70701..fe14b971440f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -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); } 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 */ }; |