On Wed, Sep 12, 2018 at 08:55:35PM -0500, Eric Sandeen wrote: > The commit: > > db1327b1 xfs: report shared extent mappings to userspace correctly > > disabled FIBMAP on reflinked files, with this very clear rationale > regarding swapfiles: > > "Have xfs_vm_bmap return zero for reflinked files because the > bmap-based swap code requires static block mappings, which is > incompatible with copy on write." > > However, this broke the FIBMAP interface for existing userspace > apps, including bootloaders. It didn't break any interface because the reflink flag has been experimental and a mkfs-time opt in. So NAK for this patch.
