The wait_time variable is in seconds. Reflect this in a comment and use
NANOSECONDS_PER_SECOND instead of BLOCK_IO_SLICE_TIME * 10 (which
happens to have the right value).
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
Tested-By: Benoit Canet <ben...@irqsave.net>
---
block.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/block.c b/block.c
index aa16fc4..602d8a4 100644
--- a/block.c
+++ b/block.c
@@ -3800,7 +3800,7 @@ static bool bdrv_exceed_bps_limits(BlockDriverState *bs,
int nb_sectors,
BLOCK_IO_SLICE_TIME;
bs->slice_end += extension;
if (wait) {
- *wait = wait_time * BLOCK_IO_SLICE_TIME * 10;
+ *wait = wait_time * NANOSECONDS_PER_SECOND;
}
return true;
@@ -3841,7 +3841,7 @@ static bool bdrv_exceed_iops_limits(BlockDriverState *bs,
bool is_write,
return false;
}
- /* Calc approx time to dispatch */
+ /* Calc approx time to dispatch, in seconds */
wait_time = (ios_base + 1) / iops_limit;
if (wait_time > elapsed_time) {
wait_time = wait_time - elapsed_time;
@@ -3852,7 +3852,7 @@ static bool bdrv_exceed_iops_limits(BlockDriverState *bs,
bool is_write,
/* Exceeded current slice, extend it by another slice time */
bs->slice_end += BLOCK_IO_SLICE_TIME;
if (wait) {
- *wait = wait_time * BLOCK_IO_SLICE_TIME * 10;
+ *wait = wait_time * NANOSECONDS_PER_SECOND;
}
return true;
--
1.8.1.4
