From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Mike Snitzer <snitzer@redhat.com>, Shaohua Li <shli@fb.com>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
sitsofe@yahoo.com, axboe@fb.com, Kernel-team@fb.com
Subject: Re: block: correctly fallback for zeroout
Date: Thu, 09 Jun 2016 22:05:21 -0400 [thread overview]
Message-ID: <yq14m91iyse.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20160607063842.GA21032@infradead.org> (Christoph Hellwig's message of "Mon, 6 Jun 2016 23:38:42 -0700")
>>>>> "Christoph" == Christoph Hellwig <hch@infradead.org> writes:
>> Userland apps rely on EOPNOTSUPP, we can't break that.
Christoph> Rely on what exactly? Current we return EOPNOTSUPP if the
Christoph> device doesn't claim to support discards, but it returns 0 if
Christoph> the device first claims to support it but then fails the I/O.
Hopefully we can clean up this when/if we go the fallocate() route.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2016-06-10 2:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-26 18:08 [PATCH] block: correctly fallback for zeroout Shaohua Li
2016-05-29 6:47 ` Christoph Hellwig
2016-06-03 3:06 ` Martin K. Petersen
2016-06-03 3:54 ` Mike Snitzer
2016-06-07 2:32 ` Martin K. Petersen
2016-06-07 6:38 ` Christoph Hellwig
2016-06-10 2:05 ` Martin K. Petersen [this message]
[not found] ` <20160527054918.GA9521@sucs.org>
2016-05-28 9:27 ` [PATCH] " Sitsofe Wheeler
2016-05-28 9:27 ` Sitsofe Wheeler
2016-06-02 16:58 ` Shaohua Li
2016-06-02 17:02 ` Martin K. Petersen
2016-06-03 2:56 ` Martin K. Petersen
2016-06-03 3:26 ` Martin K. Petersen
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