diff options
| author | Pasha Tatashin <pasha.tatashin@soleen.com> | 2026-03-27 03:33:28 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-18 00:10:49 -0700 |
| commit | 6b2b22f7c8cf1596490beaac96a989cbafdfea57 (patch) | |
| tree | 7ffee6e8f54d477a70db3e232cfd87614d1c8f6f /include/linux | |
| parent | 9e1e18584548e8ef8b37a2a7f5eb84b91e35a160 (diff) | |
liveupdate: protect FLB lists with luo_register_rwlock
Because liveupdate FLB objects will soon drop their persistent module
references when registered, list traversals must be protected against
concurrent module unloading.
To provide this protection, utilize the global luo_register_rwlock. It
protects the global registry of FLBs and the handler's specific list of
FLB dependencies.
Read locks are used during concurrent list traversals (e.g., during
preservation and serialization). Write locks are taken during
registration and unregistration.
Link: https://lore.kernel.org/20260327033335.696621-5-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Cc: David Matlack <dmatlack@google.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Samiullah Khawaja <skhawaja@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/liveupdate.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/liveupdate.h b/include/linux/liveupdate.h index 61325ad265265..9c761d9bacf88 100644 --- a/include/linux/liveupdate.h +++ b/include/linux/liveupdate.h @@ -12,6 +12,7 @@ #include <linux/kho/abi/luo.h> #include <linux/list.h> #include <linux/mutex.h> +#include <linux/rwsem.h> #include <linux/types.h> #include <uapi/linux/liveupdate.h> |