do_last: kill a rudiment of old ->d_revalidate() workaround

There used to be time when ->d_revalidate() couldn't return an error.
So intents code had lookup_instantiate_filp() stash ERR_PTR(error)
in nd->intent.open.filp and had it checked after lookup_hash(), to
catch the otherwise silent failures.  That had been introduced by
commit 4af4c52f34606bdaab6930a845550c6fb02078a4.  These days
->d_revalidate() can and does propagate errors back to callers
explicitly, so this check isn't needed anymore.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/namei.c b/fs/namei.c
index 441f110..6972e76 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2183,11 +2183,6 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
        path->dentry = dentry;
        path->mnt = nd->path.mnt;
 
-       if (IS_ERR(nd->intent.open.file)) {
-               error = PTR_ERR(nd->intent.open.file);
-               goto exit_mutex_unlock;
-       }
-
        /* Negative dentry, just create the file */
        if (!dentry->d_inode) {
                int mode = op->mode;