VFS: Make link_path_walk set LOOKUP_CONTINUE before calling permission().
Trond Myklebust [Tue, 18 Oct 2005 21:20:18 +0000 (14:20 -0700)]
 This will allow nfs_permission() to perform additional optimizations when
 walking the path, by folding the ACCESS(MAY_EXEC) call on the directory
 into the lookup revalidation.

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

fs/namei.c

index 0d1dff7..aaaa810 100644 (file)
@@ -763,6 +763,7 @@ static fastcall int __link_path_walk(const char * name, struct nameidata *nd)
                struct qstr this;
                unsigned int c;
 
+               nd->flags |= LOOKUP_CONTINUE;
                err = exec_permission_lite(inode, nd);
                if (err == -EAGAIN) { 
                        err = permission(inode, MAY_EXEC, nd);
@@ -815,7 +816,6 @@ static fastcall int __link_path_walk(const char * name, struct nameidata *nd)
                        if (err < 0)
                                break;
                }
-               nd->flags |= LOOKUP_CONTINUE;
                /* This does the actual lookups.. */
                err = do_lookup(nd, &this, &next);
                if (err)