On Tue, 2013-06-11 at 12:19 -0400, Sasha Levin wrote: > It might be, but you need CAP_SYS_RESOURCE to go into the dangerous > zone (>pipe_max_size). > > So if root (or someone with that cap) wants to go there, as Rusty says: > "Root asked, we do." Yes and no : adding a test to select vmalloc()/vfree() instead of kmalloc()/kfree() will slow down regular users asking 32 pages in their pipe. If there is no _sensible_ use for large pipes even for root, please do not bloat the code just because we can. -- 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>