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Date: Wed, 13 May 2015 17:21:02 +0800 From: Baoquan He <bhe@...hat.com> To: "Li, ZhenHua" <zhen-hual@...com> Cc: dwmw2@...radead.org, indou.takao@...fujitsu.com, joro@...tes.org, vgoyal@...hat.com, dyoung@...hat.com, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, kexec@...ts.infradead.org, alex.williamson@...hat.com, ddutile@...hat.com, ishii.hironobu@...fujitsu.com, bhelgaas@...gle.com, doug.hatch@...com, jerry.hoemann@...com, tom.vaden@...com, li.zhang6@...com, lisa.mitchell@...com, billsumnerlinux@...il.com, rwright@...com Subject: Re: [PATCH v11 04/10] iommu/vt-d: functions to copy data from old mem On 05/13/15 at 05:13pm, Li, ZhenHua wrote: > Hi Baoquan, > I am using a list here to store all the mapped addresses, and unmap > them out of iounmap. > > About the reason, please check the old mails. I cannot remember the > detailed reasons. Yeah, I understand that the list is used to collect all mapped addresses and unmap them all after spin_unlock_irqsave. that's why it's better to put the reason in patch log. Patch log is used to record this kind of explanation so that you needn't say it again and again. My personal opinion. Thanks Baoquan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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