Re: [PATCH V2 resend] libata:fix kernel panic when hotplug

Hi,All Hello, On Mon, Jun 20, 2016 at 06:46:55PM -0700, Dan Williams wrote: On Mon, Jun 20, 2016 at 6:22 PM, Martin K. Petersen wrote: "Tejun" == Tejun Heo writes: In fact,we don't need libata to deal with hotplug in sas environment. So we

Re: [PATCH V2 resend] libata:fix kernel panic when hotplug

Hello, On Mon, Jun 20, 2016 at 06:46:55PM -0700, Dan Williams wrote: > On Mon, Jun 20, 2016 at 6:22 PM, Martin K. Petersen > wrote: > >> "Tejun" == Tejun Heo writes: > > > >>> In fact,we don't need libata to deal with hotplug in sas environment.

Re: [PATCH V2 resend] libata:fix kernel panic when hotplug

On Mon, Jun 20, 2016 at 6:22 PM, Martin K. Petersen wrote: >> "Tejun" == Tejun Heo writes: > >>> In fact,we don't need libata to deal with hotplug in sas environment. >>> So we can't run ata hotplug task when ata port is sas host. > > Tejun>

Re: [PATCH V2 resend] libata:fix kernel panic when hotplug

> "Tejun" == Tejun Heo writes: >> In fact,we don't need libata to deal with hotplug in sas environment. >> So we can't run ata hotplug task when ata port is sas host. Tejun> Martin, can you please confirm whether the above is true. If so, Tejun> I'll route the patch

Re: [PATCH V2 resend] libata:fix kernel panic when hotplug

On Thu, Jun 16, 2016 at 12:45:40PM +0800, DingXiang wrote: ... > In fact,we don't need libata to deal with hotplug in sas environment. > So we can't run ata hotplug task when ata port is sas host. Martin, can you please confirm whether the above is true. If so, I'll route the patch through

[PATCH V2 resend] libata:fix kernel panic when hotplug

In normal condition,if we use sas protocol and hotplug a sata disk on a port,the sas driver will send event "PORTE_BYTES_DMAED" and call function "sas_porte_bytes_dmaed". But if a sata disk is run io and unplug it,then plug a new sata disk,this operation may cause a kernel panic like this: [