Author: Masahiko Sawada <sawada.mshk@gmail.com>
*
* We can't just check the timeline when we read a page on a different segment
* to the last page. We could've received a timeline switch from a cascading
- * upstream, so the current segment ends apruptly (possibly getting renamed to
+ * upstream, so the current segment ends abruptly (possibly getting renamed to
* .partial) and we have to switch to a new one. Even in the middle of reading
* a page we could have to dump the cached page and switch to a new TLI.
*