NFS: Add tracepoints for debugging NFS hard links

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index dca7deb1609b..4ce7f7696e11 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1860,6 +1860,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
                 old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
                 dentry->d_parent->d_name.name, dentry->d_name.name);
 
+        trace_nfs_link_enter(inode, dir, dentry);
         NFS_PROTO(inode)->return_delegation(inode);
 
         d_drop(dentry);
@@ -1868,6 +1869,7 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
                 ihold(inode);
                 d_add(dentry, inode);
         }
+        trace_nfs_link_exit(inode, dir, dentry, error);
         return error;
 }
 EXPORT_SYMBOL_GPL(nfs_link);