Re: [PATCH v2] xfs: fix off-by-one in rtrefcount btree root level validation

[Carlos Maiolino]

On Tue, 14 Jul 2026 14:56:12 -0700, Xiang Mei wrote:
> xfs_rtrefcountbt_compute_maxlevels() sets
> 
> 	mp->m_rtrefc_maxlevels = min(d_maxlevels, r_maxlevels) + 1;
> 
> where the trailing "+ 1" already accounts for the inode-root level, so the
> deepest valid on-disk root level is m_rtrefc_maxlevels - 1 and a cursor must
> satisfy bc_nlevels <= bc_maxlevels (= m_rtrefc_maxlevels).
> 
> [...]

Applied to for-next, thanks!

[1/1] xfs: fix off-by-one in rtrefcount btree root level validation
      commit: fde50b32183f19041b4bab66c8f07b1cc38f8e26

Best regards,
-- 
Carlos Maiolino <cem@xxxxxxxxxx>