On Mon, 06 Aug 2007 19:43:46 +0200 Miklos Szeredi <miklos@xxxxxxxxxx> wrote: > > Separate the handling of the local ia_valid bitmask from the one in > > attr->ia_valid. This allows us to hand off the actual handling of the > > ATTR_KILL_* flags to the .setattr i_op when one is defined. > > > > notify_change still needs to process those flags for the local ia_valid > > variable, since it uses that to decide whether to return early, and to pass > > a (hopefully) appropriate bitmask to fsnotify_change. > > I agree with this change and fuse will make use of it as well. > > Maybe instead of unconditionally moving attr_kill_to_mode() inside > ->setattr() it could be made conditional based on an inode flag > similarly to S_NOCMTIME. Advantages: > > - no need to modify a lot of in-tree filesystems > - no silent breakage of out-of-tree fs > > Actually I think the new flag would be used by exacly the same > filesystems as S_NOCMTIME, so maybe it would make sense to rename > S_NOCMTIME to something more generic (S_NOATTRUPDATE or whatever) and > use that. > > But that could still break out-of-tree fs, so a separate flag is > probably better. > In the past I've been told that adding new flags is something of a "last resort". Since it's not strictly necessary to fix this then it may be best to avoid that. That said, if the concensus is that we need a transition mechanism, then I'd be open to such a suggestion. -- Jeff Layton <jlayton@xxxxxxxxxx> - 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
