> Any mapping that doesn't use the reserved pool, not just > MAP_NORESERVE. For example, if a process makes a MAP_PRIVATE mapping, > then fork()s then the mapping is instantiated in the child, that will > not draw from the reserved pool. > > > Should we ensure them to allocate the last hugepage? > > They map a region with MAP_NORESERVE, so don't assume that their requests > > always succeed. > > If the pages are available, people get cranky if it fails for no > apparent reason, MAP_NORESERVE or not. They get especially cranky if > it sometimes fails and sometimes doesn't due to a race condition. Hello, Hmm... Okay. I will try to implement another way to protect race condition. Maybe it is the best to use a table mutex :) Anyway, please give me a time, guys. Really thank you for pointing that. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>