On Mon, Sep 17, 2007 at 11:27:28AM -0700, Dave Hansen wrote: > if(res || !(mode & S_IWOTH) || > special_file(nd.dentry->d_inode->i_mode)) > goto out_path_release; > - > - if(IS_RDONLY(nd.dentry->d_inode)) > + /* > + * This is a rare case where using __mnt_is_readonly() > + * is OK without a mnt_want/drop_write() pair. Since > + * no actual write to the fs is performed here, we do > + * not need to telegraph to that to anyone. > + * > + * By doing this, we accept that this access is > + * inherently racy and know that the fs may change > + * state before we even see this result. > + */ > + if (__mnt_is_readonly(nd.mnt)) > res = -EROFS;
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