On 2019/3/7 1:15 下午, shile.zhang@xxxxxxxxxxxxxxxxx wrote:
> From: Shile Zhang <shile.zhang@xxxxxxxxxxxxxxxxx>
>
> Read /sys/fs/bcache/<uuid>/cacheN/priority_stats can take very long
> time with huge cache after long run.
>
> Signed-off-by: Shile Zhang <shile.zhang@xxxxxxxxxxxxxxxxx>
Hi Shile,
Do you test your change ? It will be helpful with more performance data
(what problem that you improved).
Thanks.
Coly Li
> ---
> drivers/md/bcache/sysfs.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
> index 557a8a3..028fea1 100644
> --- a/drivers/md/bcache/sysfs.c
> +++ b/drivers/md/bcache/sysfs.c
> @@ -897,6 +897,7 @@ static void bch_cache_set_internal_release(struct kobject *k)
>
> static int __bch_cache_cmp(const void *l, const void *r)
> {
> + cond_resched();
> return *((uint16_t *)r) - *((uint16_t *)l);
> }
>
>
--
Coly Li
