Re: [PATCH] scsi: ufs: mark HPB support as BROKEN

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On Tue, 2021-10-26 at 16:24 +0900, Damien Le Moal wrote:
> On 2021/10/26 16:12, Christoph Hellwig wrote:
> > The HPB support added this merge window is fundanetally

And s/n/m/ while you're at it: fundamentally

Otherwise:

Reviewed-by: James E.J. Bottomley <jejb@xxxxxxxxxxxxx>

James

> >  flawed as it uses blk_insert_cloned_request to insert a cloned
> > request onto the same queue as the one that the original request
> > came from, leading to all kinds of issues in blk-mq accounting (in
> > addition to this API being a special case for dm-mpath that should
> > not see other users).
> > 
> > Mark is as BROKEN as the non-intrusive alternative to a last minute
> 
> s/Mark is/Mark it
> 
> > large scale revert.
> > 
> > Fixes: f02bc9754a68 ("scsi: ufs: ufshpb: Introduce Host Performance
> > Buffer
> > feature")
> > Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> > ---
> >  drivers/scsi/ufs/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
> > index 432df76e6318a..7835d9082aae4 100644
> > --- a/drivers/scsi/ufs/Kconfig
> > +++ b/drivers/scsi/ufs/Kconfig
> > @@ -186,7 +186,7 @@ config SCSI_UFS_CRYPTO
> >  
> >  config SCSI_UFS_HPB
> >  	bool "Support UFS Host Performance Booster"
> > -	depends on SCSI_UFSHCD
> > +	depends on SCSI_UFSHCD && BROKEN
> >  	help
> >  	  The UFS HPB feature improves random read performance. It
> > caches
> >  	  L2P (logical to physical) map of UFS to host DRAM. The driver
> > uses HPB
> > 
> 
> Otherwise, looks good to me.
> 
> Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
> 





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