This is a small set of patches which are needed before we can make the locking on directory operations more fine grained. I think they are useful even if we don't go that direction. Some callers of vfs_mkdir() need to operation on the resulting directory but cannot be guaranteed that the dentry will be hashed and positive on success - another dentry might have been used. This patch changes ->mkdir to return a dentry, changes NFS in particular to return the correct dentry (I believe it is the only filesystem to possibly not use the given dentry), and changes vfs_mkdir() to return that dentry, removing the look that a few callers currently need. I have not Cc: the developers of all the individual filesystems - only NFS. I have build-tested all the changes except hostfs. I can email them explicitly if/when this is otherwise acceptable. If anyone sees this on fs-devel and wants to provide a pre-emptive ack I will collect those and avoid further posting for those fs. Thanks, NeilBrown
