Re: [PATCH v3 0/2] block,scsi: fixup blk_get_request dead queue scenarios
From: Jens Axboe
Date: Tue Aug 26 2014 - 17:19:31 EST
On 08/26/2014 11:24 AM, Jeff Moyer wrote:
> Joe Lawrence <joe.lawrence@xxxxxxxxxxx> writes:
>> v2->v3: rebase to 3.16-rc2, consider return values from the
>> blk_mq_alloc_request leg of the blk_get_request callchain
>> (noted by Jeff), noted in the second patch changelog.
>> blk_mq_queue_enter may return 0 or errno, which
>> blk_mq_alloc_request can propogate out via ERR_PTR.
>> __blk_mq_alloc_request doesn't include any blk_queue_dying
>> checks, so I'm assuming that its failures can be attributed
>> to -EWOULDBLOCK under !GFP_WAIT conditions.
>> v1->v2: incorporate Jeff's feedback in bsg_map_hdr() and Reviewed-by
>> Joe Lawrence (2):
>> block,scsi: verify return pointer from blk_get_request
>> block,scsi: fixup blk_get_request dead queue scenarios
> Did this patch set fall through the cracks again?
Falling through the cracks implies that I meant to apply it and did not,
which was not the case. But I think we're at the point now where I'm
finally comfortable with applying it. So, Joe, could you ensure that it
applies to 3.17-rc2, then I will roll it in to the updates for 3.18.
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