lkml.org 
[lkml]   [2006]   [Apr]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 2/3] mm: speculative get_page
On Tue, 4 Apr 2006, Nick Piggin wrote:

> + /*
> + * PageNoNewRefs is set in order to prevent new references to the
> + * page (eg. before it gets removed from pagecache). Wait until it
> + * becomes clear (and checks below will ensure we still have the
> + * correct one).
> + */
> + while (unlikely(PageNoNewRefs(page)))
> + cpu_relax();

That part looks suspiciously like we need some sort of lock here.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-04-04 17:24    [W:0.850 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site