From: Arnd Bergmann <arnd@kernel.org>
To: Pasha Tatashin <pasha.tatashin@soleen.com>,
Mike Rapoport <rppt@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Pratyush Yadav <pratyush@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>, linux-kernel@vger.kernel.org
Subject: [PATCH] mm: memfd_luo: add CONFIG_SHMEM dependency
Date: Thu, 4 Dec 2025 11:01:58 +0100 [thread overview]
Message-ID: <20251204100203.1034394-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
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.
Fixes: b3749f174d68 ("mm: memfd_luo: allow preserving memfd")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
kernel/liveupdate/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/liveupdate/Kconfig b/kernel/liveupdate/Kconfig
index 86a58eaf433a..80b77db2b0e0 100644
--- a/kernel/liveupdate/Kconfig
+++ b/kernel/liveupdate/Kconfig
@@ -53,6 +53,7 @@ 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
--
2.39.5
next reply other threads:[~2025-12-04 10:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 10:01 Arnd Bergmann [this message]
2025-12-04 10:12 ` [PATCH] mm: memfd_luo: add CONFIG_SHMEM dependency Pratyush Yadav
2025-12-04 11:01 ` Mike Rapoport
2025-12-04 14:09 ` Pasha Tatashin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20251204100203.1034394-1-arnd@kernel.org \
--to=arnd@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=arnd@arndb.de \
--cc=linux-kernel@vger.kernel.org \
--cc=pasha.tatashin@soleen.com \
--cc=pratyush@kernel.org \
--cc=rppt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.