Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-30 Thread 王金浦
2016-08-10 13:36 GMT+02:00 Roman Penyaev : > On Wed, Aug 10, 2016 at 10:42 AM, Roman Penyaev > wrote: >> Hi, >> >> On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: >>> Hello, >>> >>> On Mon, Aug 08, 2016 at

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-30 Thread 王金浦
2016-08-10 13:36 GMT+02:00 Roman Penyaev : > On Wed, Aug 10, 2016 at 10:42 AM, Roman Penyaev > wrote: >> Hi, >> >> On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: >>> Hello, >>> >>> On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: Long time ago there was a similar fix proposed

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Roman Penyaev
Hi, On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: > Hello, > > On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: >> Long time ago there was a similar fix proposed by Akinobu Mita[1], >> but it seems that time everyone decided to fix this subtle race in >>

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Roman Penyaev
Hi, On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: > Hello, > > On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: >> Long time ago there was a similar fix proposed by Akinobu Mita[1], >> but it seems that time everyone decided to fix this subtle race in >> percpu-refcount and Tejun

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Roman Penyaev
On Wed, Aug 10, 2016 at 10:42 AM, Roman Penyaev wrote: > Hi, > > On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: >> Hello, >> >> On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: >>> Long time ago there was a similar fix proposed by

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Roman Penyaev
On Wed, Aug 10, 2016 at 10:42 AM, Roman Penyaev wrote: > Hi, > > On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: >> Hello, >> >> On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: >>> Long time ago there was a similar fix proposed by Akinobu Mita[1], >>> but it seems that time everyone

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Tejun Heo
On Wed, Aug 10, 2016 at 10:42:09AM +0200, Roman Penyaev wrote: > Hi, > > On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: > > Hello, > > > > On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: > >> Long time ago there was a similar fix proposed by Akinobu Mita[1], > >>

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-10 Thread Tejun Heo
On Wed, Aug 10, 2016 at 10:42:09AM +0200, Roman Penyaev wrote: > Hi, > > On Wed, Aug 10, 2016 at 5:55 AM, Tejun Heo wrote: > > Hello, > > > > On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: > >> Long time ago there was a similar fix proposed by Akinobu Mita[1], > >> but it seems that

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-09 Thread Tejun Heo
Hello, On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: > Long time ago there was a similar fix proposed by Akinobu Mita[1], > but it seems that time everyone decided to fix this subtle race in > percpu-refcount and Tejun Heo[2] did an attempt (as I can see that > patchset was not

Re: [PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-09 Thread Tejun Heo
Hello, On Mon, Aug 08, 2016 at 01:39:08PM +0200, Roman Pen wrote: > Long time ago there was a similar fix proposed by Akinobu Mita[1], > but it seems that time everyone decided to fix this subtle race in > percpu-refcount and Tejun Heo[2] did an attempt (as I can see that > patchset was not

[PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-08 Thread Roman Pen
Long time ago there was a similar fix proposed by Akinobu Mita[1], but it seems that time everyone decided to fix this subtle race in percpu-refcount and Tejun Heo[2] did an attempt (as I can see that patchset was not applied). The following is a description of a hang in

[PATCH v2 1/1] blk-mq: fix hang caused by freeze/unfreeze sequence

2016-08-08 Thread Roman Pen
Long time ago there was a similar fix proposed by Akinobu Mita[1], but it seems that time everyone decided to fix this subtle race in percpu-refcount and Tejun Heo[2] did an attempt (as I can see that patchset was not applied). The following is a description of a hang in