Howard Chu wrote: > > What locking is required? locking rw per directory. A directory is the group of dentries with the same parent inode. This is a small subset of the whole list. The whole list is for all the dentries of a FUSE mountpoint.
> > Keeping LMDB keysize limits in mind, it will work. But you'd probably do > > better using LMDB's DUPSORT > feature. Use the parent inode as the key, use the name as the value. Well, what you suggest is that the lookup does not use the name: after a search for the first dentry having the desired parent inode, then step by step to get to the dentry with the right name. This is not what I'm looking for: then I can better use an internal hashtable. I'm hoping I can use lmdb to do a lookup using the parent ino and the name. Is it a bad thing to use the name next to the parent ino as well? You mention the LMDB keysize. S. Bon
