Re: Swapfiles broken on XFS.

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Fri, Jan 09, 2004 at 04:55:09PM +1300, Nigel Cunningham wrote:
> It appears to me that a swapfile on an XFS filesystem will not work, at
> least some of the time.

XFS sets s_blocksize to the filesystem blocksize and bdev->bd_block_size /
i_blkbits to the XFS sector size.  The first would be 4096 in your
case and the latter 512.  We cannot set a bigger device block size because
XFS log writes are in 512b units.

I don't think the swap code should do any assumptions about any relation
of the above two.