ceph: simplify+fix atomic_open

The initial ->atomic_open op was carried over from the old intent code,
which was incomplete and didn't really work.  Replace it with a fresh
method.  In particular:

 * always attempt to do an atomic open+lookup, both for the create case
   and for lookups of existing files.
 * fix symlink handling by returning 1 to the VFS so that we can follow
   the link to its destination. This fixes a longstanding ceph bug (#2392).

Signed-off-by: Sage Weil <sage@inktank.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index ebc95cc652be..66ebe720e40d 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -806,9 +806,9 @@ extern int ceph_copy_from_page_vector(struct page **pages,
                                     loff_t off, size_t len);
 extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
 extern int ceph_open(struct inode *inode, struct file *file);
-extern int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
-                             struct file *od, unsigned flags,
-                             umode_t mode, int *opened);
+extern int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
+                            struct file *file, unsigned flags, umode_t mode,
+                            int *opened);
 extern int ceph_release(struct inode *inode, struct file *filp);
 
 /* dir.c */