O_DIRECT
#define O_NOCACHE O_DIRECT
| O_DSYNC | O_DIRECT;
FLAG_INFO_ENTRY(O_DIRECT),
(oflags & ~(O_APPEND | O_DIRECT | O_SYNC | O_CLOEXEC)) != 0) {
return open(name.c_str(), mode | (sDisableFileCache ? O_DIRECT : 0), 0666);