- Fix dax_layout_busy_page() to not discard private cow pages of fs/dax
private mappings.
- Update the memremap_pages core to properly cleanup on behalf of
internal reference-count users like device-dax.
-----BEGIN PGP SIGNATURE-----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=Se2X
-----END PGP SIGNATURE-----
Merge tag 'dax-fixes-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fixes from Dan Williams:
"A filesystem-dax and device-dax fix for v5.3.
The filesystem-dax fix is tagged for stable as the implementation has
been mistakenly throwing away all cow pages on any truncate or hole
punch operation as part of the solution to coordinate device-dma vs
truncate to dax pages.
The device-dax change fixes up a regression this cycle from the
introduction of a common 'internal per-cpu-ref' implementation.
Summary:
- Fix dax_layout_busy_page() to not discard private cow pages of
fs/dax private mappings.
- Update the memremap_pages core to properly cleanup on behalf of
internal reference-count users like device-dax"
* tag 'dax-fixes-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
mm/memremap: Fix reuse of pgmap instances with internal references
dax: dax_layout_busy_page() should not unmap cow pages
b6c0649caf