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Arnd Bergmann
601cc399a0
The new memfd code fails to link without SHMEM:
aarch64-linux-ld: mm/memfd_luo.o: in function `memfd_luo_retrieve_folios':
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0xdc): undefined reference to `shmem_add_to_page_cache'
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0x11c): undefined reference to `shmem_inode_acct_blocks'
memfd_luo.c:(.text.memfd_luo_retrieve_folios+0x134): undefined reference to `shmem_recalc_inode'
Add a Kconfig dependency to disallow that configuration.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: b3749f174d ("mm: memfd_luo: allow preserving memfd")
Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Pratyush Yadav <[email protected]>
Acked-by: Mike Rapoport (Microsoft) <[email protected]>
Reviewed-by: Pasha Tatashin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>