On Thu, Jan 30, 2014 at 9:46 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > On Mon, Jan 27, 2014 at 05:37:04PM -0800, John Stultz wrote: >> In working with ashmem and looking briefly at kdbus' memfd ideas, >> there's a commonality that both basically act as a method to provide >> applications with unlinked tmpfs/shmem fds. > > Just use O_TMPFILE on a tmpfs file and you're done. Ashmem and kdbus can name the deleted files, which is useful for debugging and tools to show the associated name for the file descriptor. They also show up in /proc/$PID/maps/ and possibly in /proc/$PID/fd/. O_TMPFILE always creates files with just the name "/". Unless that is changed we wouldn't want switch over to O_TMPFILE, because we would lose that nice feature. Is there are way to "fix" O_TMPFILE to accept the name of the file to be created, instead of insisting to take only the leading directory as the argument? Kay -- 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>