RE: [PATCH v2] usb-storage: Add a limitation for blk_queue_max_hw_sectors()

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Hi Alan, shuah, Suwan,

> From: Christoph Hellwig, Sent: Monday, June 17, 2019 3:22 PM
> 
> On Mon, Jun 17, 2019 at 04:17:43AM +0000, Yoshihiro Shimoda wrote:
> > Thank you for the comments. So, should I wait for getting rid of the
> > virt_boundary_mask stuff? If I revise the commit log of this patch,
> > is it acceptable for v5.2-stable as a workaround? In other words,
> > I worry about this issue exists on v5.2-stable.
> 
> It does exist on 5.2-stable and we should fix it.  I'll plan to resend
> my series to fix the virt_boundary issues for the other SCSI driver
> soon, but we'll still need to sort out usb-storage.

I guess that getting rid of the virt_boundary_mask stuff [1] needs more time.
So, for v5.2-stable, would you accept my patch as a workaround?
JFYI, v5.2-rc7 still has this "swiotlb buffer is full" issue.

[1]
https://marc.info/?l=linux-kernel&m=156114524808042&w=2

Best regards,
Yoshihiro Shimoda





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