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;
Ok.
-
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