From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-mm@kvack.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 5/39] mm: pgrep: add a use-once insertion hint
Date: Wed, 12 Jul 2006 16:37:57 +0200 [thread overview]
Message-ID: <20060712143757.16998.46090.sendpatchset@lappy> (raw)
In-Reply-To: <20060712143659.16998.6444.sendpatchset@lappy>
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Allow for a use-once hint.
API:
give a hint to the page replace algorithm:
void pgrep_hint_use_once(struct page *);
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
include/linux/mm_page_replace.h | 1 +
include/linux/mm_use_once_policy.h | 4 ++++
mm/filemap.c | 12 ++++++++++++
3 files changed, 17 insertions(+)
Index: linux-2.6/mm/filemap.c
===================================================================
--- linux-2.6.orig/mm/filemap.c 2006-07-12 16:08:18.000000000 +0200
+++ linux-2.6/mm/filemap.c 2006-07-12 16:08:18.000000000 +0200
@@ -412,6 +412,18 @@ int add_to_page_cache(struct page *page,
error = radix_tree_insert(&mapping->page_tree, offset, page);
if (!error) {
page_cache_get(page);
+ /*
+ * shmem_getpage()
+ * lookup_swap_cache()
+ * TestSetPageLocked()
+ * move_from_swap_cache()
+ * add_to_page_cache()
+ *
+ * That path calls us with a LRU page instead of a new
+ * page. Don't set the hint for LRU pages.
+ */
+ if (!PageLocked(page))
+ pgrep_hint_use_once(page);
SetPageLocked(page);
page->mapping = mapping;
page->index = offset;
Index: linux-2.6/include/linux/mm_page_replace.h
===================================================================
--- linux-2.6.orig/include/linux/mm_page_replace.h 2006-07-12 16:08:18.000000000 +0200
+++ linux-2.6/include/linux/mm_page_replace.h 2006-07-12 16:11:54.000000000 +0200
@@ -9,6 +9,7 @@
#include <linux/mm_inline.h>
/* void pgrep_hint_active(struct page *); */
+/* void pgrep_hint_use_once(struct page *); */
extern void fastcall pgrep_add(struct page *);
/* void __pgrep_add(struct zone *, struct page *); */
/* void pgrep_add_drain(void); */
Index: linux-2.6/include/linux/mm_use_once_policy.h
===================================================================
--- linux-2.6.orig/include/linux/mm_use_once_policy.h 2006-07-12 16:08:18.000000000 +0200
+++ linux-2.6/include/linux/mm_use_once_policy.h 2006-07-12 16:11:54.000000000 +0200
@@ -8,6 +8,10 @@ static inline void pgrep_hint_active(str
SetPageActive(page);
}
+static inline void pgrep_hint_use_once(struct page *page)
+{
+}
+
static inline void
__pgrep_add(struct zone *zone, struct page *page)
{
--
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next prev parent reply other threads:[~2006-07-12 14:37 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-12 14:36 [PATCH 0/39] mm: 2.6.17-pr1 - generic page-replacement framework and 4 new policies Peter Zijlstra
2006-07-12 14:37 ` [PATCH 1/39] mm: disuse activate_page() Peter Zijlstra
2006-07-12 14:37 ` [PATCH 2/39] mm: adjust blk_congestion_wait() logic Peter Zijlstra
2006-07-12 14:37 ` [PATCH 3/39] mm: pgrep: prepare for page replace framework Peter Zijlstra
2006-07-12 14:37 ` [PATCH 4/39] mm: pgrep: convert insertion Peter Zijlstra
2006-07-12 14:37 ` Peter Zijlstra [this message]
2006-07-12 14:38 ` [PATCH 6/39] mm: pgrep: generice __pagevec_*_add Peter Zijlstra
2006-07-12 14:38 ` [PATCH 7/39] mm: pgrep: abstract the activation logic Peter Zijlstra
2006-07-12 14:38 ` [PATCH 8/39] mm: pgrep: move useful macros around Peter Zijlstra
2006-07-12 14:38 ` [PATCH 9/39] mm: pgrep: move struct scan_control around Peter Zijlstra
2006-07-12 14:38 ` [PATCH 10/39] mm: pgrep: isolate the reclaim_mapped logic Peter Zijlstra
2006-07-12 14:39 ` [PATCH 11/39] mm: pgrep: replace mark_page_accessed Peter Zijlstra
2006-07-12 14:39 ` [PATCH 12/39] mm: pgrep: move the shrink logic Peter Zijlstra
2006-07-12 14:39 ` [PATCH 13/39] mm: pgrep: abstract rotate_reclaimable_page() Peter Zijlstra
2006-07-12 14:39 ` [PATCH 14/39] mm: pgrep: manage page-state Peter Zijlstra
2006-07-12 14:39 ` [PATCH 15/39] mm: pgrep: abstract page removal Peter Zijlstra
2006-07-12 14:40 ` [PATCH 16/39] mm: pgrep: remove mm_inline.h Peter Zijlstra
2006-07-12 14:40 ` [PATCH 17/39] mm: pgrep: re-insertion logic Peter Zijlstra
2006-07-12 14:40 ` [PATCH 18/39] mm: pgrep: initialisation hooks Peter Zijlstra
2006-07-12 14:40 ` [PATCH 19/39] mm: pgrep: info functions Peter Zijlstra
2006-07-12 14:40 ` [PATCH 20/39] mm: pgrep: page count functions Peter Zijlstra
2006-07-12 14:41 ` [PATCH 21/39] mm: pgrep: per policy data Peter Zijlstra
2006-07-12 14:41 ` [PATCH 22/39] mm: pgrep: per policy PG_flags Peter Zijlstra
2006-07-12 14:41 ` [PATCH 23/39] mm: pgrep: nonresident page tracking hooks Peter Zijlstra
2006-07-12 14:41 ` [PATCH 24/39] mm: pgrep: generic shrinker logic Peter Zijlstra
2006-07-12 14:41 ` [PATCH 25/39] mm: pgrep: documentation Peter Zijlstra
2006-07-12 14:42 ` [PATCH 26/39] sum_cpu_var Peter Zijlstra
2006-07-12 14:42 ` [PATCH 27/39] mm: clockpro: nonresident page tracking for CLOCK-Pro Peter Zijlstra
2006-07-12 14:42 ` [PATCH 28/39] mm: clockpro: re-introduce page_referenced() ignore_token Peter Zijlstra
2006-07-12 14:42 ` [PATCH 29/39] mm: clockpro: second per policy PG_flag Peter Zijlstra
2006-07-12 14:42 ` [PATCH 30/39] mm: clockpro: CLOCK-Pro policy implementation Peter Zijlstra
2006-07-12 14:43 ` [PATCH 31/39] mm: cart: nonresident page tracking for CART Peter Zijlstra
2006-07-12 14:43 ` [PATCH 32/39] mm: cart: third per policy PG_flag Peter Zijlstra
2006-07-12 14:43 ` [PATCH 33/39] mm: cart: CART policy implementation Peter Zijlstra
2006-07-12 14:43 ` [PATCH 34/39] mm: cart: CART-r " Peter Zijlstra
2006-07-12 14:43 ` [PATCH 35/39] mm: random: random page replacement policy Peter Zijlstra
2006-07-12 14:44 ` [PATCH 36/39] mm: refault histogram for non-resident policies Peter Zijlstra
2006-07-12 14:44 ` [PATCH 37/39] mm: use-once: cleanup of the use-once logic Peter Zijlstra
2006-07-12 14:44 ` [PATCH 38/39] mm: use-once: use the generic shrinker logic Peter Zijlstra
2006-07-12 14:44 ` [PATCH 39/39] mm: use-once: cleanup of the insertion logic Peter Zijlstra
2006-07-13 15:38 ` [PATCH 0/39] mm: 2.6.17-pr1 - generic page-replacement framework and 4 new policies Christoph Lameter
2006-07-15 17:03 ` Peter Zijlstra
2006-07-16 3:50 ` Christoph Lameter
2006-07-26 10:03 ` Marcelo Tosatti
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