From: keith.busch@intel.com (Keith Busch)
Subject: [PATCH v7] NVMe: conversion to blk-mq
Date: Tue, 10 Jun 2014 15:10:16 -0600 (MDT) [thread overview]
Message-ID: <alpine.LRH.2.03.1406101458470.4699@AMR> (raw)
In-Reply-To: <5397636F.9050209@fb.com>
On Tue, 10 Jun 2014, Jens Axboe wrote:
> On 06/10/2014 01:29 PM, Keith Busch wrote:
>> I have two devices, one formatted 4k, the other 512. The 4k is used as
>> the TEST_DEV and 512 is used as SCRATCH_DEV. I'm always hitting a BUG when
>> unmounting the scratch dev in xfstests generic/068. The bug looks like
>> nvme was trying to use an SGL that doesn't map correctly to a PRP.
>
> I'm guessing it's some of the coalescing settings, since the driver is
> now using the generic block rq mapping.
Ok, sounds right. I mentioned in a way earlier review it doesn't look
like a request that doesn't conform to a PRP list would get split anymore,
and this test seems to confirm that.
Can we create something that will allow a driver to add DMA constraints to
a request queue with the rules of a PRP list?
WARNING: multiple messages have this Message-ID (diff)
From: Keith Busch <keith.busch@intel.com>
To: Jens Axboe <axboe@fb.com>
Cc: "Keith Busch" <keith.busch@intel.com>,
"Matias Bjørling" <m@bjorling.me>,
"willy@linux.intel.com" <willy@linux.intel.com>,
"sbradshaw@micron.com" <sbradshaw@micron.com>,
"tom.leiming@gmail.com" <tom.leiming@gmail.com>,
"hch@infradead.org" <hch@infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
Subject: Re: [PATCH v7] NVMe: conversion to blk-mq
Date: Tue, 10 Jun 2014 15:10:16 -0600 (MDT) [thread overview]
Message-ID: <alpine.LRH.2.03.1406101458470.4699@AMR> (raw)
In-Reply-To: <5397636F.9050209@fb.com>
On Tue, 10 Jun 2014, Jens Axboe wrote:
> On 06/10/2014 01:29 PM, Keith Busch wrote:
>> I have two devices, one formatted 4k, the other 512. The 4k is used as
>> the TEST_DEV and 512 is used as SCRATCH_DEV. I'm always hitting a BUG when
>> unmounting the scratch dev in xfstests generic/068. The bug looks like
>> nvme was trying to use an SGL that doesn't map correctly to a PRP.
>
> I'm guessing it's some of the coalescing settings, since the driver is
> now using the generic block rq mapping.
Ok, sounds right. I mentioned in a way earlier review it doesn't look
like a request that doesn't conform to a PRP list would get split anymore,
and this test seems to confirm that.
Can we create something that will allow a driver to add DMA constraints to
a request queue with the rules of a PRP list?
next prev parent reply other threads:[~2014-06-10 21:10 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-10 9:20 [PATCH v7] conversion to blk-mq Matias Bjørling
2014-06-10 9:20 ` Matias Bjørling
2014-06-10 9:20 ` [PATCH v7] NVMe: " Matias Bjørling
2014-06-10 9:20 ` Matias Bjørling
2014-06-10 15:51 ` Keith Busch
2014-06-10 15:51 ` Keith Busch
2014-06-10 16:19 ` Jens Axboe
2014-06-10 16:19 ` Jens Axboe
2014-06-10 19:29 ` Keith Busch
2014-06-10 19:29 ` Keith Busch
2014-06-10 19:58 ` Jens Axboe
2014-06-10 19:58 ` Jens Axboe
2014-06-10 21:10 ` Keith Busch [this message]
2014-06-10 21:10 ` Keith Busch
2014-06-10 21:14 ` Jens Axboe
2014-06-10 21:14 ` Jens Axboe
2014-06-10 21:21 ` Keith Busch
2014-06-10 21:21 ` Keith Busch
2014-06-10 21:33 ` Matthew Wilcox
2014-06-10 21:33 ` Matthew Wilcox
2014-06-11 16:54 ` Jens Axboe
2014-06-11 16:54 ` Jens Axboe
2014-06-11 17:09 ` Matthew Wilcox
2014-06-11 17:09 ` Matthew Wilcox
2014-06-11 22:22 ` Matias Bjørling
2014-06-11 22:22 ` Matias Bjørling
2014-06-11 22:51 ` Keith Busch
2014-06-11 22:51 ` Keith Busch
2014-06-12 14:32 ` Matias Bjørling
2014-06-12 14:32 ` Matias Bjørling
2014-06-12 16:24 ` Keith Busch
2014-06-12 16:24 ` Keith Busch
2014-06-13 0:06 ` Keith Busch
2014-06-13 0:06 ` Keith Busch
2014-06-13 14:07 ` Jens Axboe
2014-06-13 14:07 ` Jens Axboe
2014-06-13 15:05 ` Keith Busch
2014-06-13 15:05 ` Keith Busch
2014-06-13 15:11 ` Jens Axboe
2014-06-13 15:11 ` Jens Axboe
2014-06-13 15:16 ` Keith Busch
2014-06-13 15:16 ` Keith Busch
2014-06-13 18:14 ` Jens Axboe
2014-06-13 18:14 ` Jens Axboe
2014-06-13 19:22 ` Keith Busch
2014-06-13 19:22 ` Keith Busch
2014-06-13 19:29 ` Jens Axboe
2014-06-13 19:29 ` Jens Axboe
2014-06-13 20:56 ` Jens Axboe
2014-06-13 20:56 ` Jens Axboe
2014-06-13 21:28 ` Jens Axboe
2014-06-13 21:28 ` Jens Axboe
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