On Wed, 7 Nov 2007, Rik van Riel wrote:
> On Wed, 7 Nov 2007 10:06:10 -0800 (PST)
> Christoph Lameter <[EMAIL PROTECTED]> wrote:
>
> > On Wed, 7 Nov 2007, Rik van Riel wrote:
> >
> > > How exactly can an anonymous page ever become file backed?
> >
> > When they get assigned a swap entry.
>
> T
On Wed, 7 Nov 2007 10:06:10 -0800 (PST)
Christoph Lameter <[EMAIL PROTECTED]> wrote:
> On Wed, 7 Nov 2007, Rik van Riel wrote:
>
> > How exactly can an anonymous page ever become file backed?
>
> When they get assigned a swap entry.
That does not change their status. They're still swap backed.
On Wed, 7 Nov 2007, Rik van Riel wrote:
> How exactly can an anonymous page ever become file backed?
When they get assigned a swap entry.
> > Do ramfs pages count as memory backed?
>
> Since ramfs pages cannot be evicted from memory at all, they
> should go into the "noreclaim" page set.
Which
On Tue, 6 Nov 2007 19:26:33 -0800 (PST)
Christoph Lameter <[EMAIL PROTECTED]> wrote:
> n Tue, 6 Nov 2007, Rik van Riel wrote:
>
> > Every anonymous, tmpfs or shared memory segment page is potentially
> > swap backed. That is the whole point of the PG_swapbacked flag.
>
> One of the current issues
n Tue, 6 Nov 2007, Rik van Riel wrote:
> Every anonymous, tmpfs or shared memory segment page is potentially
> swap backed. That is the whole point of the PG_swapbacked flag.
One of the current issues with anonymous pages is the accounting when
they become file backed and get dirty. There are pe
On Tue, 6 Nov 2007 19:02:47 -0800 (PST)
Christoph Lameter <[EMAIL PROTECTED]> wrote:
> On Tue, 6 Nov 2007, Rik van Riel wrote:
>
> > > I think we could add a flag to the bdi to indicate wheter the backing
> > > store is a disk file. In fact you can also deduce if if a device has
> > > no writebac
On Tue, 6 Nov 2007, Rik van Riel wrote:
> > I think we could add a flag to the bdi to indicate wheter the backing
> > store is a disk file. In fact you can also deduce if if a device has
> > no writeback capability set in the BDI.
> >
> > > Unfortunately this needs to use a page flag, since the
On Tue, 6 Nov 2007 18:23:44 -0800 (PST)
Christoph Lameter <[EMAIL PROTECTED]> wrote:
> On Sat, 3 Nov 2007, Rik van Riel wrote:
>
> > Define page_file_cache() function to answer the question:
> > is page backed by a file?
>
> Well its not clear what is meant by a file in the first place.
> By
On Sat, 3 Nov 2007, Rik van Riel wrote:
> Define page_file_cache() function to answer the question:
> is page backed by a file?
Well its not clear what is meant by a file in the first place.
By file you mean disk space in contrast to ram based filesystems?
I think we could add a flag to th
Define page_file_cache() function to answer the question:
is page backed by a file?
Originally part of Rik van Riel's split-lru patch. Extracted
to make available for other, independent reclaim patches.
Moved inline function to linux/mm_inline.h where it will
be needed by subsequent "spl
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