tree fe4ce823e638ded151edcb142f28a240860f0d33
parent d72d904a5367ad4ca3f2c9a2ce8c3a68f0b28bf0
author Jens Axboe <axboe@suse.de> 1130833576 +0100
committer Jens Axboe <axboe@suse.de> 1130833576 +0100

[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>