From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Sam Bradshaw (sbradshaw)" <sbradshaw@micron.com>
Subject: Re: [GIT PULL] Block drivers for 3.3-rc
Date: Sun, 15 Jan 2012 07:44:05 -0500 [thread overview]
Message-ID: <20120115124405.GA7389@infradead.org> (raw)
In-Reply-To: <4F12C4ED.6060301@kernel.dk>
On Sun, Jan 15, 2012 at 01:22:05PM +0100, Jens Axboe wrote:
> Good point, I had forgotten about the ordered writes, I believe the rest
> of the items have been handled. The driver/hw, as it stands, does not
> reorder writes and it doesn't have a write back cache. So it should
> actually be safe. Any acked write is stable. Sam, correct me if I'm
> wrong.
I tried to get that out of the micron folks a while ago but don't
remember getting an answer. If that's actually tree please remove
the (misnamed) barrier argument from mtip_hw_submit_io, and maybe add
a comment that the current hardware can't have a volatile write cache.
Btw, does the hardware claim to have writeback caches in the ATA
IDENTIFY words related to it?
next prev parent reply other threads:[~2012-01-15 12:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-15 9:52 Jens Axboe
2012-01-15 10:33 ` Christoph Hellwig
2012-01-15 12:22 ` Jens Axboe
2012-01-15 12:44 ` Christoph Hellwig [this message]
2012-01-15 12:50 ` Jens Axboe
2012-01-16 19:10 ` Sam Bradshaw (sbradshaw)
2012-01-16 19:13 ` Sam Bradshaw (sbradshaw)
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