On Thu, Aug 27, 2020 at 01:59:41PM +0100, Matthew Wilcox wrote:
> On Wed, Aug 26, 2020 at 10:20:02AM -0400, Johannes Weiner wrote:
> > The refactor makes sense to me, but the name is confusing. We're not
> > looking for a swap page, we're primarily looking for a file p
On Wed, Aug 26, 2020 at 03:54:14PM +0100, Matthew Wilcox wrote:
> On Wed, Aug 26, 2020 at 10:20:02AM -0400, Johannes Weiner wrote:
> > On Wed, Aug 19, 2020 at 07:48:44PM +0100, Matthew Wilcox (Oracle) wrote:
> > > + return find_get_swap_page(vma-&
On Wed, Aug 19, 2020 at 07:48:48PM +0100, Matthew Wilcox (Oracle) wrote:
> There are only three callers remaining of find_get_entry().
> find_get_swap_page() is happy to get the head page instead of the subpage.
> Add find_subpage() calls to find_lock_entry() and pagecache_get_page()
> to avoid aud
On Wed, Aug 19, 2020 at 07:48:47PM +0100, Matthew Wilcox (Oracle) wrote:
> i915 does not want to see value entries. Switch it to use
> find_lock_page() instead, and remove the export of find_lock_entry().
>
> Signed-off-by: Matthew Wilcox (Oracle)
Acked-by: Joh
On Wed, Aug 19, 2020 at 07:48:46PM +0100, Matthew Wilcox (Oracle) wrote:
> Avoid bumping the refcount on pages when we're only interested in the
> swap entries.
>
> Signed-off-by: Matthew Wilcox (Oracle)
Acked-by: Johannes Weiner
Wilcox (Oracle)
Acked-by: Johannes Weiner
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On Wed, Aug 19, 2020 at 07:48:44PM +0100, Matthew Wilcox (Oracle) wrote:
> The current code does not protect against swapoff of the underlying
> swap device, so this is a bug fix as well as a worthwhile reduction in
> code complexity.
>
> Signed-off-by: Matthew Wilcox (Oracle)
> ---
> mm/memcont
On Wed, May 01, 2019 at 10:04:33AM -0400, Brian Welty wrote:
> In containerized or virtualized environments, there is desire to have
> controls in place for resources that can be consumed by users of a GPU
> device. This RFC patch series proposes a framework for integrating
> use of existing cgro
On Thu, Dec 10, 2015 at 10:32:42AM +0100, Daniel Vetter wrote:
> On Fri, Dec 04, 2015 at 11:09:52AM -0500, Johannes Weiner wrote:
> > On Fri, Dec 04, 2015 at 03:58:53PM +, Chris Wilson wrote:
> > > Some modules, like i915.ko, use swappable objects and may try to swap
&g
On Thu, Dec 17, 2015 at 06:15:44PM +, Dave Gordon wrote:
> Some modules, like i915.ko, use swappable objects and may try to swap
> them out under memory pressure (via the shrinker). Before doing so,
> they want to check using get_nr_swap_pages() to see if any swap space
> is available as otherw
On Mon, Dec 07, 2015 at 06:10:00PM +, Dave Gordon wrote:
> Exporting random uncontrolled variables from the kernel to loaded modules is
> not really considered best practice. It would be preferable to provide an
> accessor function - which is just what the declaration says we have; the
> implem
On Mon, Dec 07, 2015 at 06:04:35PM +0100, Michal Hocko wrote:
> Yes but the counter is an internal thing to the MM and the outside code
> should have no business in manipulating it directly.
The counter has been global scope forever. If you want to encapsulate
it, send a patch yourself and make yo
On Mon, Dec 07, 2015 at 02:48:12PM +0100, Michal Hocko wrote:
> On Fri 04-12-15 15:58:53, Chris Wilson wrote:
> > Some modules, like i915.ko, use swappable objects and may try to swap
> > them out under memory pressure (via the shrinker). Before doing so, they
> > want to check using get_nr_swap_pa
kvack.org
> Cc: Akash Goel
> Cc: sourab.gu...@intel.com
Acked-by: Johannes Weiner
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available as otherwise they will waste time purging the object from the
> device without recovering any memory for the system. This requires the
> nr_swap_pages counter to be exported to the modules.
>
> Signed-off-by: Chris Wilson
> Cc: "Goel, Akash"
> Cc: Johannes We
On Thu, Nov 26, 2015 at 11:25:14AM +, Chris Wilson wrote:
> On Wed, Nov 25, 2015 at 03:46:35PM -0500, Johannes Weiner wrote:
> > On Wed, Nov 25, 2015 at 08:31:02PM +, Chris Wilson wrote:
> > > On Wed, Nov 25, 2015 at 02:06:10PM -0500, Johannes Weiner wrote:
> > >
On Wed, Nov 25, 2015 at 08:31:02PM +, Chris Wilson wrote:
> On Wed, Nov 25, 2015 at 02:06:10PM -0500, Johannes Weiner wrote:
> > On Wed, Nov 25, 2015 at 06:36:56PM +, Chris Wilson wrote:
> > > +static bool swap_available(void)
> > > +{
> > > + return t
On Wed, Nov 25, 2015 at 06:36:56PM +, Chris Wilson wrote:
> If the system has no available swap pages, we cannot make forward
> progress in the shrinker by releasing active pages, only by releasing
> purgeable pages which are immediately reaped. Take total_swap_pages into
> account when countin
it is still confusing.
>
> Fixes: 0a31bc97c80c (mm: memcontrol: rewrite uncharge API)
> Cc: sta...@vger.kernel.org # 3.17+
> Reported-by: Chris Wilson
> Reported-by: Dave Airlie
> Acked-by: Hugh Dickins
> Signed-off-by: Michal Hocko
Acked-by: Johannes We
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