Bug#692175: Acknowledgement (fusedav: concurrent dav_open can result in duplicate cache entries)

Here's a small cleanup on top the existing patch. I don't believe it fixes any real bugs, but it's Obviously Correct (TM). I worked on it while resolving issues with the original patch for #692179 commit d9ae7c815e8a98eeb214ea7e8495d95a458761a7 Author: Eric Wong normalper...@yhbt.net Date:

Bug#692175: Info received (Bug#692175: Acknowledgement (fusedav: concurrent dav_open can result in duplicate cache entries))

Attached is a big bugfix for the original patch. Sorry for the breakage. commit 54984c1bc3635efbe0661c0bdd98eb5083555e38 Author: Eric Wong normalper...@yhbt.net Date: Thu Nov 8 00:56:10 2012 + filecache: unlink cache entry on HEAD failure during open Since we insert a