linux-kernel - Re: [PATCH] Do not silently discard WRITE

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Message-ID: <yq1lhomahwt.fsf@sermon.lab.mkp.net>
Date:	Sat, 11 Oct 2014 08:51:30 -0400
From:	"Martin K. Petersen" <martin.petersen@...cle.com>
To:	Petr Vandrovec <petr@...are.com>
Cc:	Jens Axboe <axboe@...nel.dk>,
	Arvind Kumar <arvindkumar@...are.com>,
	Chris J Arges <chris.j.arges@...onical.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	Christoph Hellwig <hch@....de>, stable@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Do not silently discard WRITE_SAME requests

>>>>> "Petr" == Petr Vandrovec <petr@...are.com> writes:

Petr> After investigating, problem seems to be in a way completion
Petr> handler for WRITE_SAME handles EOPNOTSUPP error, causing
Petr> all-but-first WRITE_SAME request on the LVM device to be silently
Petr> ignored - command is never issued, but success is returned to
Petr> higher layers.

Commit 7eee4ae2dbb2 was meant to address this issue. Does it still
happen with that in place?

-- 
Martin K. Petersen	Oracle Linux Engineering
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