xfs: tighten up validation of root block in inode forks

Check that root blocks that sit in the inode fork and thus have a NULL
bp don't have siblings.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-02-22 12:40:57 -08:00 • committed by Darrick J. Wong
commit d477f1749f