[PATCH] xfs_repair: fix sibling pointer tests in verify_dir2_path()

[Christoph Hellwig]

On Wed, Feb 19, 2014 at 03:10:13PM -0600, Eric Sandeen wrote:
> RH QE reported that if we create a 1G filesystem with default
> options, mount it, and create inodes until full, then run
> repair, repair reports corruption in verify_dir2_path() with:
> 
> > bad back pointer in block 8390324 for directory inode 131

Can you please wire this up for xfstests?

> 
> The commit 88b32f0 xfs: add CRCs to dir2/da node blocks
> had a small error which regressed this; although we switch
> to the "newnode," to check sibling pointers, we re-populate
> the node hdr with the old "node" data.  This causes the
> backpointer test to be testing the wrong node's values.
> 
> Fixing this bug fixes the testcase.
> 
> Signed-off-by: Eric Sandeen <sandeen at redhat.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>