On Wed, Jan 04, 2012 at 03:53:18PM +1100, Dave Chinner wrote: > > xfs_fsr doesn't use these donor files to avoid mtime updates - it > uses invisible IO (i.e. O_NOATIME|O_NOCMTIME) to do that. O_NOCMTIME doesn't exist yet. From include/linux/fs.h: /* * Don't update ctime and mtime. * * Currently a special hack for the XFS open_by_handle ioctl, but we'll * hopefully graduate it to a proper O_CMTIME flag supported by open(2) soon. */ #define FMODE_NOCMTIME ((__force fmode_t)0x800) I'd have to check, but it wouldn't surprise me if glibc is filtering out all fcntl flags it doesn't understand, so for now, this is an XFS-only special... - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
