LINUX_O_DIRECT
#define LINUX_O_DIRECT 0x00010000
#define LINUX_O_DIRECT 0x080000
#define LINUX_O_DIRECT 0x04000
#define LINUX_O_DIRECT 0x10000
#define LINUX_O_DIRECT 0x04000
#define LINUX_O_DIRECT 0x10000
#define LINUX_O_DIRECT 0x08000
#define LINUX_O_DIRECT 0x20000