[LTP] [PATCH] block: add BLK_FEAT_LBS to check for PAGE_SIZE limit

[Li Wang]

On Wed, Mar 12, 2025 at 1:44 PM Luis Chamberlain <mcgrof@kernel.org> wrote:

> On Wed, Mar 12, 2025 at 06:40:53AM +0100, Christoph Hellwig wrote:
> > On Tue, Mar 11, 2025 at 10:37:27PM -0700, Luis Chamberlain wrote:
> > > > If you need extra per-driver validatation, do it in the driver.
> > >
> > > Are you suggesting we just move back the PAGE_SIZE check,
> >
> > PAGE_SIZE now is a consumer (i.e. file system) limitation.  Having
> > a flag in the provider (driver) does not make sense.
> >
> > > or to keep
> > > the checks for the block driver limits into each driver?
> >
> > Most drivers probably don't have a limit other than than that implicit
> > by the field width used for reporting.  So in general the driver should
> > not need any checks.  The only exceptions might be for virtual drivers
> > where the value comes from userspace, but even then it is a bit doubtful.
>
> Alrighty, so silly tests just need to be updated. If a hang is reported,
> we can look into it, or just add block driver checks / limitations.
>

Well, does that patch for ioctl_loop06 still make sense?
Or any other workaround?
https://lists.linux.it/pipermail/ltp/2025-March/042599.html

-- 
Regards,
Li Wang