From: Arnd Bergmann Date: Thu, 4 Dec 2025 10:01:58 +0000 (+0100) Subject: mm: memfd_luo: add CONFIG_SHMEM dependency X-Git-Tag: v6.19-rc1~8^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=601cc399a01049efa76be8f496541315dc9cf914;p=thirdparty%2Flinux.git mm: memfd_luo: add CONFIG_SHMEM dependency 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/20251204100203.1034394-1-arnd@kernel.org Fixes: b3749f174d68 ("mm: memfd_luo: allow preserving memfd") Signed-off-by: Arnd Bergmann Reviewed-by: Pratyush Yadav Acked-by: Mike Rapoport (Microsoft) Reviewed-by: Pasha Tatashin Signed-off-by: Andrew Morton --- diff --git a/kernel/liveupdate/Kconfig b/kernel/liveupdate/Kconfig index 9b2515f31afb..d2aeaf13c3ac 100644 --- a/kernel/liveupdate/Kconfig +++ b/kernel/liveupdate/Kconfig @@ -54,6 +54,7 @@ config KEXEC_HANDOVER_ENABLE_DEFAULT config LIVEUPDATE bool "Live Update Orchestrator" depends on KEXEC_HANDOVER + depends on SHMEM help Enable the Live Update Orchestrator. Live Update is a mechanism, typically based on kexec, that allows the kernel to be updated