From: Johannes Weiner <hannes@cmpxchg.org>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: intel-gfx@lists.freedesktop.org, "Goel,
Akash" <akash.goel@intel.com>,
linux-mm@kvack.org
Subject: Re: [PATCH v2 1/2] mm: Export nr_swap_pages
Date: Fri, 4 Dec 2015 11:09:52 -0500 [thread overview]
Message-ID: <20151204160952.GA24927@cmpxchg.org> (raw)
In-Reply-To: <1449244734-25733-1-git-send-email-chris@chris-wilson.co.uk>
On Fri, Dec 04, 2015 at 03:58:53PM +0000, 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_pages() to see if any swap space is
> 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 <chris@chris-wilson.co.uk>
> Cc: "Goel, Akash" <akash.goel@intel.com>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: linux-mm@kvack.org
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
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next prev parent reply other threads:[~2015-12-04 16:10 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-04 15:58 Chris Wilson
2015-12-04 15:58 ` [PATCH v2 2/2] drm/i915: Disable shrinker for non-swapped backed objects Chris Wilson
2015-12-04 16:11 ` Johannes Weiner
2015-12-10 9:34 ` Daniel Vetter
2015-12-04 16:09 ` Johannes Weiner [this message]
2015-12-10 9:32 ` [Intel-gfx] [PATCH v2 1/2] mm: Export nr_swap_pages Daniel Vetter
2015-12-23 22:04 ` Johannes Weiner
2015-12-23 22:26 ` Andrew Morton
2016-01-05 10:05 ` Daniel Vetter
2015-12-07 13:48 ` Michal Hocko
2015-12-07 16:48 ` Johannes Weiner
2015-12-07 17:04 ` Michal Hocko
2015-12-07 18:02 ` Johannes Weiner
2015-12-07 18:10 ` [Intel-gfx] " Dave Gordon
2015-12-07 19:13 ` Johannes Weiner
2015-12-08 11:19 ` Dave Gordon
2015-12-08 11:22 ` Michal Hocko
2015-12-17 18:15 ` [PATCH v3] mm: Export {__}get_nr_swap_pages() Dave Gordon
2015-12-17 19:45 ` Johannes Weiner
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