vfs: do_last() common post lookup
Now the post lookup code can be shared between O_CREAT and plain opens since
they are essentially the same.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index 125386c..998d531 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2249,37 +2249,7 @@
inode = path->dentry->d_inode;
}
- error = -ENOENT;
- if (!inode) {
- path_to_nameidata(path, nd);
- goto exit;
- }
-
- if (should_follow_link(inode, !symlink_ok)) {
- if (nd->flags & LOOKUP_RCU) {
- if (unlikely(unlazy_walk(nd, path->dentry))) {
- error = -ECHILD;
- goto exit;
- }
- }
- BUG_ON(inode != path->dentry->d_inode);
- return NULL;
- }
- path_to_nameidata(path, nd);
- nd->inode = inode;
-
- /* sayonara */
- error = complete_walk(nd);
- if (error)
- return ERR_PTR(error);
-
- error = -ENOTDIR;
- if (nd->flags & LOOKUP_DIRECTORY) {
- if (!nd->inode->i_op->lookup)
- goto exit;
- }
- audit_inode(pathname, nd->path.dentry);
- goto ok;
+ goto finish_lookup;
}
/* create side of things */
@@ -2360,6 +2330,8 @@
BUG_ON(nd->flags & LOOKUP_RCU);
inode = path->dentry->d_inode;
+finish_lookup:
+ /* we _can_ be in RCU mode here */
error = -ENOENT;
if (!inode) {
path_to_nameidata(path, nd);