NFS: Handle -ENOENT errors in unlink()/rmdir()/rename()

If the server returns an ENOENT error, we still need to do a d_delete() in
order to ensure that the dentry is deleted.

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

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index d9abdb1..06f26d4 100644 (file)
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1267,6 +1267,12 @@ out_err:
        return error;
 }
 
+static void nfs_dentry_handle_enoent(struct dentry *dentry)
+{
+       if (dentry->d_inode != NULL && !d_unhashed(dentry))
+               d_delete(dentry);
+}
+
 static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
 {
        int error;
@@ -1279,6 +1285,8 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
        /* Ensure the VFS deletes this inode */
        if (error == 0 && dentry->d_inode != NULL)
                clear_nlink(dentry->d_inode);
+       else if (error == -ENOENT)
+               nfs_dentry_handle_enoent(dentry);
        unlock_kernel();
 
        return error;
@@ -1385,6 +1393,8 @@ static int nfs_safe_remove(struct dentry *dentry)
                nfs_mark_for_revalidate(inode);
        } else
                error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
+       if (error == -ENOENT)
+               nfs_dentry_handle_enoent(dentry);
 out:
        return error;
 }
@@ -1421,7 +1431,7 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
        spin_unlock(&dentry->d_lock);
        spin_unlock(&dcache_lock);
        error = nfs_safe_remove(dentry);
-       if (!error) {
+       if (!error || error == -ENOENT) {
                nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
        } else if (need_rehash)
                d_rehash(dentry);
@@ -1634,7 +1644,8 @@ out:
                d_move(old_dentry, new_dentry);
                nfs_set_verifier(new_dentry,
                                        nfs_save_change_attribute(new_dir));
-       }
+       } else if (error == -ENOENT)
+               nfs_dentry_handle_enoent(old_dentry);
 
        /* new dentry created? */
        if (dentry)