Re: Fix for 84676c1f (b5b6e8c8) missing in 4.14.y

On 10 Aug 2018, at 03:15, Greg Kroah-Hartman [off-list ref]=

 wrote:

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On Fri, Aug 10, 2018 at 10:31:29AM +0800, Ming Lei wrote:

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On Fri, Aug 10, 2018 at 02:09:01AM +0000, Felipe Franciosi wrote:

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Hi Ming (and all),
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Your series "scsi: virtio_scsi: fix IO hang caused by irq vector automa=

tic affinity" which forces virtio-scsi to use blk-mq fixes an issue introdu=
ced by 84676c1f. We noticed that this bug also exists in 4.14.y (as ef86f3a=
72adb), but your series was not backported to that stable branch.

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Are there any plans to do that? At least CoreOS is using 4.14 and showi=

ng issues on AHV (which provides an mq virtio-scsi controller).

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Hi Felipe,
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Looks the following 4 patches should have been marked as stable, sorry
for missing that.
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b5b6e8c8d3b4 scsi: virtio_scsi: fix IO hang caused by automatic irq vect=

or affinity

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2f31115e940c scsi: core: introduce force_blk_mq
adbe552349f2 scsi: megaraid_sas: fix selection of reply queue
8b834bff1b73 scsi: hpsa: fix selection of reply queue
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Usually this backporting is done by our stable guys, so I will CC stable
and leave them handle it, but I am happy to provide any help for
addressing conflicts or sort of thing.

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As the above patches do not apply "cleanly" to the 4.14.y tree at all,
can you please provide a set of backported patches that I can apply?

Actually, adbe552349f2 is already present in 4.14.y. It is commit e58114824=
fa6.

If you skip that, all the other three apply cleanly.

Thanks,
Felipe

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thanks,
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greg k-h