From: James Bottomley <jbottomley@parallels.com>
To: "Sumit.Saxena@lsi.com" <Sumit.Saxena@lsi.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"kashyap.desai@lsi.com" <kashyap.desai@lsi.com>,
"aradford@gmail.com" <aradford@gmail.com>
Subject: Re: [PATCH][SCSI] megaraid_sas: Fix synchronization problem between sysPD IO path and AEN path
Date: Wed, 16 Oct 2013 21:44:47 +0000 [thread overview]
Message-ID: <1381959886.1864.25.camel@dabdike> (raw)
In-Reply-To: <201310161134.r9GBYYqK021397@cosmhbs0.lsi.com>
On Wed, 2013-10-16 at 17:04 +0530, Sumit.Saxena@lsi.com wrote:
> There is syncronization problem between sysPD IO path and AEN path. Driver maintains instance->pd_list[] array, which will get updated(by calling function megasas_get_pd_list[]), whenever any of below events occurs-
>
> MR_EVT_PD_INSERTED
> MR_EVT_PD_REMOVED
> MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED
> MR_EVT_FOREIGN_CFG_IMPORTED
>
> At same time running sysPD IO will be accessing the same array instance->pd_list[], which is getting updated in AEN path, because
> of this IO may not get correct PD info from instance->pd_list[] array.
>
> Signed-off-by: Adam Radford <adam.radford@lsi.com>
> Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Explain the signoff chain: is this a joinly authored patch?
James
next prev parent reply other threads:[~2013-10-16 21:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-16 11:34 [PATCH][SCSI] megaraid_sas: Fix synchronization problem between sysPD IO path and AEN path Sumit.Saxena
2013-10-16 21:44 ` James Bottomley [this message]
2013-10-17 4:15 ` Saxena, Sumit
2013-10-17 14:04 ` Tomas Henzl
2013-10-17 15:10 ` Saxena, Sumit
2013-10-17 15:48 ` Tomas Henzl
2013-10-17 16:05 ` Saxena, Sumit
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