fsck_ufs out of swapspace

[Peter Holm]

On Tue, Dec 20, 2011 at 11:48:33AM +0200, Kostik Belousov wrote:
> On Tue, Dec 20, 2011 at 09:51:43AM +1100, Peter Jeremy wrote:
> > On 2011-Dec-19 22:27:49 +0100, Michiel Boland <boland37 at xs4all.nl> wrote:
> > >Problem solved - it was indeed an endian thing.
> > >The problem is that fsck uses a real_dev_bsize variable that is declared long, 
> > >but the DIOCGSECTORSIZE ioctl takes an u_int argument.
> > 
> > To be accurate, this isn't an endian problem, it's a general problem
> > of passing a pointer to an incorrectly sized object.  The bug is
> > masked on amd64 & iA64 because real_dev_bsize is statically allocated
> > and therefore initialised to zero.  This means the failure to assign
> > the top 32 bits in the ioctl doesn't affect the final result.
> > 
> > >A PR has been submitted.
> > 
> > sparc64/163460 for the record.  Thank you for tracking that down.
> 
> The easier fix is to change the type of real_dev_bsize. I used long only
> because other n variables keeping the sector size are long, but there
> is no much reason to use long there.
> 
> Peter, would you, please retest the +J on non-512 byte sectors, with the
> patch attached ?
> 

No problems seen while testing on both i386 and amd64 with a malloc MD
disk, sector size of 4k and SUJ.

- Peter