On 01/30/2014 08:02 AM, Kay Sievers wrote: > 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. Not sure, but would Colin's vma-naming patch (or something like it) help address this? https://lkml.org/lkml/2013/10/30/518 thanks -john -- 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>