On Tue, Mar 13, 2012 at 01:38:56PM +0530, Kautuk Consul wrote: > > > > I agree, but that's not my point. > > > > All I'm saying is that we probably don't want to give normal > > unprivileged usermode apps > > the capability to set the mapping to AS_UNEVICTABLE as anyone can then > > write an application > > that hogs memory without allowing the kernel to free it through memory reclaim. Yes, I think so. But it seems that there has some codes that are possible to be abused. For example, as I said previously, applications can mmap a normal data file with PROT_EXEC flag. Then this file gets a high priority to keep in memory (commit: 8cab4754). So my point is that we cannot control applications how to use these mechanisms. We just provide them and let applications to choose how to use them. :-) Regards, Zheng > > Sorry, I mean : > "... that hogs kernel unmapped page-cache memory without allowing the > kernel to free it through memory reclaim." -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>