Hi Christoph,
On Sun, Oct 16, 2016 at 09:45:56AM -0700, Christoph Hellwig wrote:
head: 1001354ca34179f3db924eb66672442a173147dc
That's Linux 4.9-rc1
30cbc591 Darrick J. Wong 2016-03-09 @86
XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_unused_t, 6);
But that's not how xfs_ondisk.h in 4.9-rc1 looks like
Yeah it's a bit confusing for old errors -- the git blame is on the
old first bad commit, which is
ab9d1e4f7b0217948a3b35a64178602ab30ff45d Merge branch 'xfs-misc-fixes-4.6-3'
into for-next
30cbc591 Darrick J. Wong 2016-03-09 @96
XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 3);
And that's line 119.
Something is odd about this report.
But both xfs_dir2_data_unused_t and xfs_dir2_sf_entry_t have one thing in
common: they are strutures that aren't padded to a natural alignment at
the end. It seems like the openrisc gcc does implicit padding for them,
which sounds like a nightmware waiting to happen for any sort of disk
or network structure, so I'm really not sure if we should work around
it in xfs.
FYI the error for 'xfs_dir2_sf_entry_t' only shows up in openrisc;
and the 'xfs_attr_shortform_t' error only shows up in cris builds.
There is no errors for 'xfs_dir2_data_unused_t' in recent kernels.
Thanks,
Fengguang
