[lkml]   [2010]   [Jun]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 09/12] vmscan: Setup pagevec as late as possible in shrink_page_list()
On Mon, 14 Jun 2010 12:17:50 +0100
Mel Gorman <> wrote:

> shrink_page_list() sets up a pagevec to release pages as according as they
> are free. It uses significant amounts of stack on the pagevec. This
> patch adds pages to be freed via pagevec to a linked list which is then
> freed en-masse at the end. This avoids using stack in the main path that
> potentially calls writepage().

hm, spose so. I cen't see any trivial way to eliminate the local
pagevec there.

> + if (pagevec_count(&freed_pvec))
> + __pagevec_free(&freed_pvec);
> ...
> - if (pagevec_count(&freed_pvec))
> - __pagevec_free(&freed_pvec);

That's an open-coded pagevec_free().

 \ /
  Last update: 2010-06-17 01:51    [W:0.322 / U:0.400 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site