Re: blk-mq DM changes for 3.20 [was: Re: blk-mq request allocation stalls]X

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On Wed, 28 Jan 2015, Jens Axboe wrote:
On 01/28/2015 10:44 AM, Mike Snitzer wrote:
On Wed, Jan 28 2015 at 11:42am -0500,
Jens Axboe <axboe@xxxxxxxxx> wrote:
I'd prefer to take these prep patches through the block tree.

Great, should I send the patches or can you cherry-pick?

I already cherry picked them, they are in the for-3.20/core branch.

I might be getting ahead of myself for trying this right now (sorry if
that's the case) but 'for-3.20/core' is missing necessary parts of the
series and hits a BUG_ON at blk-core.c:2333. The original request is
initialized when setting up the clone, and in this branch, that happens
in prep_fn before the request was dequeued so it's not in the queuelist
when it started.

One of my commits relocated the initialization, but I didn't realize it
had a hard dependency on the follow-on commit.  Should we reorder that
part of the series?

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