On 02/28/2017 04:39 PM, Andrew Morton wrote: > Dumb question: why not do this in userspace, presumably as part of the > malloc() library? malloc knows where all the memory is and should be > able to kick off N threads to run around munmapping everything? One of the places we saw this happen was when an app crashed and was exit()'ing under duress without cleaning up nicely. The time that it takes to unmap a few TB of 4k pages is pretty excessive. -- 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>
