Instead of storing the @log at the beginning of rps_dev_flow_table use 5 low order bits of the rps_tag_ptr to store the log of the size. This removes a potential cache line miss (for light traffic). This allows us to switch to one high-order allocation instead of vmalloc() when CONFIG_RFS_ACCEL is not set. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20260302181432.1836150-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>