On Nov 28, 2008 12:24 +0100, Christoph Hellwig wrote: > XFS has a mode called invisble I/O that doesn't update any of the > timestamps. It's used for HSM-style applications and exposed through > the nasty open by handle ioctl. > > Instead of doing directly assignment of file operations that set an > internal flag for it add a new FMODE_INVISIBLE flag that we can check > in the normal file operations. Why not call this "FMODE_NOCMTIME" similar to the inode flag "S_NOCMTIME" that already exists, and . That makes it more clear what is being done, instead of calling it "INVISIBLE". It should also not be possible to skip ctime updates for non-root users, as that provides some forensic trail if files have been modified by users. Not sure if that is relevant here though (it looks like this is only used internally), but worth mentioning in any case. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
