From: Matthew Wilcox <matthew@wil.cx>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hugh@veritas.com>,
dwmw2@infradead.org, jens.axboe@oracle.com, joern@logfs.org,
James.Bottomley@HansenPartnership.com, djshin90@gmail.com,
teheo@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 8/9] swapfile: swapon randomize if nonrot
Date: Tue, 25 Nov 2008 20:38:16 -0700 [thread overview]
Message-ID: <20081126033815.GF25548@parisc-linux.org> (raw)
In-Reply-To: <20081125172039.c9a35460.akpm@linux-foundation.org>
On Tue, Nov 25, 2008 at 05:20:39PM -0800, Andrew Morton wrote:
> On Tue, 25 Nov 2008 21:46:56 +0000 (GMT)
> Hugh Dickins <hugh@veritas.com> wrote:
>
> > But how to get my SD card, accessed by USB card reader, reported as NONROT?
>
> Dunno. udev rules, perhaps?
I didn't see patch 8/9, but the 'non-rotating' bit is in word 217 of the
inquiry data. Unfortunately, Jeff insisted that we only report the
contents of that bit for devices claiming ATA-8 support, which is
ridiculous as even the Intel SSDs only claim conformance to ATA-7.
I notice that Jens was allowed to ignore Jeff's insane requirement and
doesn't have to check ATA revision at all.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
WARNING: multiple messages have this Message-ID (diff)
From: Matthew Wilcox <matthew@wil.cx>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hugh@veritas.com>,
dwmw2@infradead.org, jens.axboe@oracle.com, joern@logfs.org,
James.Bottomley@HansenPartnership.com, djshin90@gmail.com,
teheo@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 8/9] swapfile: swapon randomize if nonrot
Date: Tue, 25 Nov 2008 20:38:16 -0700 [thread overview]
Message-ID: <20081126033815.GF25548@parisc-linux.org> (raw)
In-Reply-To: <20081125172039.c9a35460.akpm@linux-foundation.org>
On Tue, Nov 25, 2008 at 05:20:39PM -0800, Andrew Morton wrote:
> On Tue, 25 Nov 2008 21:46:56 +0000 (GMT)
> Hugh Dickins <hugh@veritas.com> wrote:
>
> > But how to get my SD card, accessed by USB card reader, reported as NONROT?
>
> Dunno. udev rules, perhaps?
I didn't see patch 8/9, but the 'non-rotating' bit is in word 217 of the
inquiry data. Unfortunately, Jeff insisted that we only report the
contents of that bit for devices claiming ATA-8 support, which is
ridiculous as even the Intel SSDs only claim conformance to ATA-7.
I notice that Jens was allowed to ignore Jeff's insane requirement and
doesn't have to check ATA revision at all.
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."
--
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next prev parent reply other threads:[~2008-11-26 3:38 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-25 21:35 [PATCH 0/9] swapfile: cleanups and solidstate mods Hugh Dickins
2008-11-25 21:36 ` [PATCH 1/9] swapfile: swapon needs larger size type Hugh Dickins
2008-11-25 21:37 ` [PATCH 2/9] swapfile: remove SWP_ACTIVE mask Hugh Dickins
2008-11-25 21:37 ` [PATCH 3/9] swapfile: remove surplus whitespace Hugh Dickins
2008-11-25 21:39 ` [PATCH 4/9] swapfile: remove v0 SWAP-SPACE message Hugh Dickins
2008-11-25 21:40 ` [PATCH 5/9] swapfile: rearrange scan and swap_info Hugh Dickins
2008-11-25 21:44 ` [PATCH 6/9] swapfile: swapon use discard (trim) Hugh Dickins
2008-11-25 21:44 ` Hugh Dickins
2008-11-25 21:46 ` [PATCH 7/9] swapfile: swap allocation use discard Hugh Dickins
2008-11-25 21:46 ` Hugh Dickins
2008-12-01 0:29 ` [PATCH 10/9] swapfile: change discard pgoff_t to sector_t Hugh Dickins
2008-12-01 0:29 ` Hugh Dickins
2008-12-03 0:47 ` Andrew Morton
2008-12-03 0:47 ` Andrew Morton
2008-12-03 12:52 ` Hugh Dickins
2008-12-03 12:52 ` Hugh Dickins
2008-11-25 21:46 ` [PATCH 8/9] swapfile: swapon randomize if nonrot Hugh Dickins
2008-11-25 21:46 ` Hugh Dickins
2008-11-26 1:20 ` Andrew Morton
2008-11-26 1:20 ` Andrew Morton
2008-11-26 3:38 ` Matthew Wilcox [this message]
2008-11-26 3:38 ` Matthew Wilcox
2008-12-01 0:32 ` [PATCH 11/9] swapfile: let others seed random Hugh Dickins
2008-12-01 0:32 ` Hugh Dickins
2008-11-25 21:47 ` [PATCH 9/9] swapfile: swap allocation cycle if nonrot Hugh Dickins
2008-11-25 21:47 ` Hugh Dickins
2008-11-26 1:17 ` [PATCH 6/9] swapfile: swapon use discard (trim) Andrew Morton
2008-11-26 1:17 ` Andrew Morton
2008-11-26 6:02 ` Hugh Dickins
2008-11-26 6:02 ` Hugh Dickins
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