| Message ID | 20231201094636.19770-3-laoar.shao@gmail.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Paul Moore |
| Headers | show |
| Series | mm, security, bpf: Fine-grained control over memory policy adjustments with lsm bpf | expand |
diff --git a/include/uapi/linux/mempolicy.h b/include/uapi/linux/mempolicy.h index a8963f7ef4c2..afed4a45f5b9 100644 --- a/include/uapi/linux/mempolicy.h +++ b/include/uapi/linux/mempolicy.h @@ -26,7 +26,7 @@ enum { MPOL_MAX, /* always last member of enum */ }; -/* Flags for set_mempolicy */ +/* Flags for set_mempolicy() or mbind() */ #define MPOL_F_STATIC_NODES (1 << 15) #define MPOL_F_RELATIVE_NODES (1 << 14) #define MPOL_F_NUMA_BALANCING (1 << 13) /* Optimize with NUMA balancing if possible */
MPOL_F_STATIC_NODES, MPOL_F_RELATIVE_NODES, and MPOL_F_NUMA_BALANCING are mode flags applicable to both set_mempolicy(2) and mbind(2) system calls. It's worth noting that MPOL_F_NUMA_BALANCING was initially introduced in commit bda420b98505 ("numa balancing: migrate on fault among multiple bound nodes") exclusively for set_mempolicy(2). However, it was later made a shared flag for both set_mempolicy(2) and mbind(2) following commit 6d2aec9e123b ("mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()"). This revised version aims to clarify the details regarding the mode flags. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Cc: Eric Dumazet <edumazet@google.com> --- include/uapi/linux/mempolicy.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)