diff options
author | Jens Axboe <axboe@suse.de> | 2005-11-01 09:26:16 +0100 |
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committer | Jens Axboe <axboe@suse.de> | 2005-11-01 09:26:16 +0100 |
commit | a362357b6cd62643d4dda3b152639303d78473da (patch) | |
tree | fe4ce823e638ded151edcb142f28a240860f0d33 /include | |
parent | d72d904a5367ad4ca3f2c9a2ce8c3a68f0b28bf0 (diff) |
[BLOCK] Unify the seperate read/write io stat fields into arrays
Instead of having ->read_sectors and ->write_sectors, combine the two
into ->sectors[2] and similar for the other fields. This saves a branch
several places in the io path, since we don't have to care for what the
actual io direction is. On my x86-64 box, that's 200 bytes less text in
just the core (not counting the various drivers).
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/genhd.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h index eabdb5cce357..8eeaa53a68c9 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -78,7 +78,7 @@ struct hd_struct { sector_t start_sect; sector_t nr_sects; struct kobject kobj; - unsigned reads, read_sectors, writes, write_sectors; + unsigned ios[2], sectors[2]; int policy, partno; }; @@ -89,10 +89,10 @@ struct hd_struct { #define GENHD_FL_SUPPRESS_PARTITION_INFO 32 struct disk_stats { - unsigned read_sectors, write_sectors; - unsigned reads, writes; - unsigned read_merges, write_merges; - unsigned read_ticks, write_ticks; + unsigned sectors[2]; + unsigned ios[2]; + unsigned merges[2]; + unsigned ticks[2]; unsigned io_ticks; unsigned time_in_queue; }; |