linux-kernel - Re: [PATCH 0/2] fix regression in direct I/O to pmem devices

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Message-ID: <x49egj5zkca.fsf@segfault.boston.devel.redhat.com>
Date:	Fri, 14 Aug 2015 16:27:49 -0400
From:	Jeff Moyer <jmoyer@...hat.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Matthew R Wilcox <matthew.r.wilcox@...el.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-nvdimm <linux-nvdimm@...1.01.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] fix regression in direct I/O to pmem devices

Dan Williams <dan.j.williams@...el.com> writes:

> On Fri, Aug 14, 2015 at 1:22 PM, Dan Williams <dan.j.williams@...el.com> wrote:
>> On Fri, Aug 14, 2015 at 1:15 PM, Jeff Moyer <jmoyer@...hat.com> wrote:
>>> Linda Knippers noticed that commit bbab37ddc20b (block: Add support
>>> for DAX reads/writes to block devices) caused a regression in mkfs.xfs.
>>> Further investigation also uncovered issues related to misaligned
>>> partitions.  This patch set addresses the two issues.
>>>
>>> [PATCH 1/2] dax: fix O_DIRECT I/O to the last block of a blockdev
>>> [PATCH 2/2] blockdev: don't set S_DAX for misaligned partitions
>>
>> Should these be "Cc: <stable@...r.kernel.org>" given the regression
>> fix is applicable back to 4.0?
>
> Sorry, regression *since* 4.0.

$ git describe --contains bbab37ddc20b
v4.2-rc1~2^2~4

Looks like this was not sprung on the public yet.

-Jeff
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