From: Jens Axboe <axboe@kernel.dk>
To: Sam Bradshaw <sbradshaw@micron.com>
Cc: linux-kernel@vger.kernel.org,
Felipe Franciosi <felipe@paradoxo.org>,
david.vrabel@citrix.com,
"Asai Thambi Samymuthu Pattrayasamy (asamymuthupa)"
<asamymuthupa@micron.com>
Subject: Re: [PATCH] mtip32xx: mtip_async_complete() bug fixes
Date: Thu, 13 Mar 2014 15:02:45 -0600 [thread overview]
Message-ID: <53221CF5.2080000@kernel.dk> (raw)
In-Reply-To: <53221E92.3030707@micron.com>
On 03/13/2014 03:09 PM, Sam Bradshaw wrote:
> This patch fixes 2 issues in the fast completion path:
> 1) Possible double completions / double dma_unmap_sg() calls due to lack
> of atomicity in the check and subsequent dereference of the upper layer
> callback function. Fixed with cmpxchg before unmap and callback.
> 2) Regression in unaligned IO constraining workaround for p420m devices.
> Fixed by checking if IO is unaligned and using proper semaphore if so.
Sam, what is this patch against? It doesn't apply to -rc6 and it doesn't
apply to for-3.15/drivers (the latter would be preferred/required). It
also seems to have line break issues.
--
Jens Axboe
next prev parent reply other threads:[~2014-03-13 21:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-13 21:09 [PATCH] mtip32xx: mtip_async_complete() bug fixes Sam Bradshaw
2014-03-13 21:02 ` Jens Axboe [this message]
2014-03-13 21:33 ` Sam Bradshaw
2014-03-13 21:59 ` Jens Axboe
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