]> git.karo-electronics.de Git - karo-tx-linux.git/commit
virtio_blk: Drop unused request tracking list
authorAsias He <asias@redhat.com>
Fri, 30 Mar 2012 03:24:10 +0000 (11:24 +0800)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 12 Sep 2012 02:37:31 +0000 (03:37 +0100)
commit788c8de383e3c59df49126f95343eed0cf1733ea
tree06b4cbe7d87156470bb4bd494027a3f6d8617d15
parent0984c4c423da091cf8221e74b030c116d865dacf
virtio_blk: Drop unused request tracking list

commit f65ca1dc6a8c81c6bd72297d4399ec5f4c1f3a01 upstream.

Benchmark shows small performance improvement on fusion io device.

Before:
  seq-read : io=1,024MB, bw=19,982KB/s, iops=39,964, runt= 52475msec
  seq-write: io=1,024MB, bw=20,321KB/s, iops=40,641, runt= 51601msec
  rnd-read : io=1,024MB, bw=15,404KB/s, iops=30,808, runt= 68070msec
  rnd-write: io=1,024MB, bw=14,776KB/s, iops=29,552, runt= 70963msec

After:
  seq-read : io=1,024MB, bw=20,343KB/s, iops=40,685, runt= 51546msec
  seq-write: io=1,024MB, bw=20,803KB/s, iops=41,606, runt= 50404msec
  rnd-read : io=1,024MB, bw=16,221KB/s, iops=32,442, runt= 64642msec
  rnd-write: io=1,024MB, bw=15,199KB/s, iops=30,397, runt= 68991msec

Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/block/virtio_blk.c