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From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: lduncan@suse.com, cleech@redhat.com
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>,
jejb@linux.vnet.ibm.com, martin.petersen@oracle.com,
open-iscsi@googlegroups.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled
Date: Thu, 15 Mar 2018 00:11:45 -0400 [thread overview]
Message-ID: <yq137129dvi.fsf@oracle.com> (raw)
In-Reply-To: <1520425743-1923-1-git-send-email-jianchao.w.wang@oracle.com> (Jianchao Wang's message of "Wed, 7 Mar 2018 20:29:03 +0800")
> iscsi tcp will first send out data, then calculate and send data
> digest. If we don't have BDI_CAP_STABLE_WRITES, the page cache will
> be written in spite of the on going writeback. Consequently, wrong
> digest will be got and sent to target.
>
> To fix this, set BDI_CAP_STABLE_WRITES when data digest is enabled
> in iscsi_tcp .slave_configure callback.
Lee, Chris: Please review!
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2018-03-15 4:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-07 12:29 [PATCH] scsi: iscsi_tcp: set BDI_CAP_STABLE_WRITES when data digest enabled Jianchao Wang
2018-03-14 7:00 ` jianchao.wang
2018-03-15 4:11 ` Martin K. Petersen [this message]
2018-03-15 10:37 ` Lee Duncan
2018-03-15 18:05 ` Chris Leech
2018-03-20 3:26 ` Martin K. Petersen
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