lkml.org 
[lkml]   [2008]   [May]   [13]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateTue, 13 May 2008 09:11:01 -0400
FromRik van Riel <>
SubjectRe: [PATCH -mm 05/15] free swap space on swap-in/activation
On Tue, 13 May 2008 22:00:44 +0900
Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> wrote:

> On 2008/05/12 22:33 +0900, Rik van Riel wrote:> > On Mon, 12 May 2008 20:21:32 +0900> > Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> wrote:
> > 
> >> So, the intention of this patch is> >> not to free a swap space of swap cache that has already swapped in
> >> and only used one process as do_swap_page() does,> >> but to free a swap space that is only used as a swap cache
> >> (not used by any processes), right?
> > 
> > No.  The code should also free the swap space of pages that are
> > mapped by processes, in order to free up swap space for other
> > uses.  This only happens if vm_swap_full() is true.
> > > > OK.> > I thought that current code cannot free the swap space
> of pages that are mapped by processes(and I think it cannot),
> so I asked the intention of this patch for clarification.

You may be right, due to the refcounting magic that is going
on.  I will verify the code and send in a fix if it turns out
to be needed.

-- 
All rights reversed.


\
 
 \ /
  Last update: 2008-05-13 15:13    [from the cache]
©2003-2008