Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-28 Thread Shaohua Li
On Thu, Sep 28, 2017 at 07:19:45PM +0800, Joseph Qi wrote: > > > On 17/9/28 11:48, Joseph Qi wrote: > > Hi Shahua, > > > > On 17/9/28 05:38, Shaohua Li wrote: > >> On Tue, Sep 26, 2017 at 11:16:05AM +0800, Joseph Qi wrote: > >>> > >>> > >>> On 17/9/26 10:48, Shaohua Li wrote: > On Tue, Sep

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-28 Thread Joseph Qi
On 17/9/28 11:48, Joseph Qi wrote: > Hi Shahua, > > On 17/9/28 05:38, Shaohua Li wrote: >> On Tue, Sep 26, 2017 at 11:16:05AM +0800, Joseph Qi wrote: >>> >>> >>> On 17/9/26 10:48, Shaohua Li wrote: On Tue, Sep 26, 2017 at 09:06:57AM +0800, Joseph Qi wrote: > Hi Shaohua, > > On

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-27 Thread Joseph Qi
Hi Shahua, On 17/9/28 05:38, Shaohua Li wrote: > On Tue, Sep 26, 2017 at 11:16:05AM +0800, Joseph Qi wrote: >> >> >> On 17/9/26 10:48, Shaohua Li wrote: >>> On Tue, Sep 26, 2017 at 09:06:57AM +0800, Joseph Qi wrote: Hi Shaohua, On 17/9/26 01:22, Shaohua Li wrote: > On Mon, Sep

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-27 Thread Shaohua Li
On Tue, Sep 26, 2017 at 11:16:05AM +0800, Joseph Qi wrote: > > > On 17/9/26 10:48, Shaohua Li wrote: > > On Tue, Sep 26, 2017 at 09:06:57AM +0800, Joseph Qi wrote: > >> Hi Shaohua, > >> > >> On 17/9/26 01:22, Shaohua Li wrote: > >>> On Mon, Sep 25, 2017 at 06:46:42PM +0800, Joseph Qi wrote: >

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-25 Thread Joseph Qi
On 17/9/26 10:48, Shaohua Li wrote: > On Tue, Sep 26, 2017 at 09:06:57AM +0800, Joseph Qi wrote: >> Hi Shaohua, >> >> On 17/9/26 01:22, Shaohua Li wrote: >>> On Mon, Sep 25, 2017 at 06:46:42PM +0800, Joseph Qi wrote: From: Joseph Qi Currently it will

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-25 Thread Shaohua Li
On Tue, Sep 26, 2017 at 09:06:57AM +0800, Joseph Qi wrote: > Hi Shaohua, > > On 17/9/26 01:22, Shaohua Li wrote: > > On Mon, Sep 25, 2017 at 06:46:42PM +0800, Joseph Qi wrote: > >> From: Joseph Qi > >> > >> Currently it will try to dispatch bio in

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-25 Thread Joseph Qi
Hi Shaohua, On 17/9/26 01:22, Shaohua Li wrote: > On Mon, Sep 25, 2017 at 06:46:42PM +0800, Joseph Qi wrote: >> From: Joseph Qi >> >> Currently it will try to dispatch bio in throtl_upgrade_state. This may >> lead to io stall in the following case. >> Say the

Re: [PATCH] blk-throttle: fix possible io stall when doing upgrade

2017-09-25 Thread Shaohua Li
On Mon, Sep 25, 2017 at 06:46:42PM +0800, Joseph Qi wrote: > From: Joseph Qi > > Currently it will try to dispatch bio in throtl_upgrade_state. This may > lead to io stall in the following case. > Say the hierarchy is like: > /-test1 > |-subtest1 > and subtest1 has