Add the definition for the missing but always intended extra sizes, and add a NUMA flag for the planned numa extention. Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> --- include/uapi/linux/futex.h | 7 ++++--- kernel/futex/syscalls.c | 4 ++-- 2 files changed, 6 insertions(+), 5 deletions(-) --- a/include/uapi/linux/futex.h +++ b/include/uapi/linux/futex.h @@ -46,10 +46,11 @@ /* * Flags for futex2 syscalls. */ - /* 0x00 */ - /* 0x01 */ +#define FUTEX2_8 0x00 +#define FUTEX2_16 0x01 #define FUTEX2_32 0x02 - /* 0x04 */ +#define FUTEX2_64 0x03 +#define FUTEX2_NUMA 0x04 /* 0x08 */ /* 0x10 */ /* 0x20 */ --- a/kernel/futex/syscalls.c +++ b/kernel/futex/syscalls.c @@ -183,7 +183,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uad return do_futex(uaddr, op, val, tp, uaddr2, (unsigned long)utime, val3); } -#define FUTEX2_MASK (FUTEX2_32 | FUTEX2_PRIVATE) +#define FUTEX2_MASK (FUTEX2_64 | FUTEX2_PRIVATE) /** * futex_parse_waitv - Parse a waitv array from userspace @@ -207,7 +207,7 @@ static int futex_parse_waitv(struct fute if ((aux.flags & ~FUTEX2_MASK) || aux.__reserved) return -EINVAL; - if (!(aux.flags & FUTEX2_32)) + if ((aux.flags & FUTEX2_64) != FUTEX2_32) return -EINVAL; futexv[i].w.flags = aux.flags;
