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block: drop duplicated slice extension code 

The current slice is extended when an I/O request exceeds the limit.
There is no need to extend the slice every time we check a request.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-By: Benoit Canet <benoit@irqsave.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2013-04-05 11:32:21 +02:00 committed by Kevin Wolf
parent ae29d6c64b
commit e660fb8b3c
1 changed files with 1 additions and 4 deletions
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5
block.c
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@ -3867,10 +3867,7 @@ static bool bdrv_exceed_io_limits(BlockDriverState *bs, int nb_sectors,
int bps_ret, iops_ret;
now = qemu_get_clock_ns(vm_clock);
if ((bs->slice_start < now)
&& (bs->slice_end > now)) {
bs->slice_end = now + BLOCK_IO_SLICE_TIME;
} else {
if (now > bs->slice_end) {
bs->slice_start = now;
bs->slice_end = now + BLOCK_IO_SLICE_TIME;
memset(&bs->slice_submitted, 0, sizeof(bs->slice_submitted));