From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Greg KH <gregkh@linuxfoundation.org>,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [ 35/41] mm: test PageSwapBacked in lumpy reclaim
Date: Mon, 30 Jul 2012 10:31:34 -0700 [thread overview]
Message-ID: <20120730172904.049886840@linuxfoundation.org> (raw)
In-Reply-To: <20120730172901.306897424@linuxfoundation.org>
From: Greg KH <gregkh@linuxfoundation.org>
3.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Hugh Dickins <hughd@google.com>
commit 043bcbe5ec51e0478ef2b44acef17193e01d7f70 upstream.
Stable note: Not tracked in Bugzilla. There were reports of shared
mapped pages being unfairly reclaimed in comparison to older kernels.
This is being addressed over time. Even though the subject
refers to lumpy reclaim, it impacts compaction as well.
Lumpy reclaim does well to stop at a PageAnon when there's no swap, but
better is to stop at any PageSwapBacked, which includes shmem/tmpfs too.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
mm/vmscan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1199,7 +1199,7 @@ static unsigned long isolate_lru_pages(u
* anon page which don't already have a swap slot is
* pointless.
*/
- if (nr_swap_pages <= 0 && PageAnon(cursor_page) &&
+ if (nr_swap_pages <= 0 && PageSwapBacked(cursor_page) &&
!PageSwapCache(cursor_page))
break;
next prev parent reply other threads:[~2012-07-30 17:33 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-30 17:30 [ 00/41] 3.0.39-rc2 stable review Greg Kroah-Hartman
2012-07-30 17:31 ` [ 01/41] cifs: always update the inode cache with the results from a FIND_* Greg Kroah-Hartman
2012-07-30 17:31 ` [ 02/41] ntp: Fix STA_INS/DEL clearing bug Greg Kroah-Hartman
2012-07-30 17:31 ` [ 03/41] mm: fix lost kswapd wakeup in kswapd_stop() Greg Kroah-Hartman
2012-07-30 17:31 ` [ 04/41] MIPS: Properly align the .data..init_task section Greg Kroah-Hartman
2012-07-30 17:31 ` [ 05/41] UBIFS: fix a bug in empty space fix-up Greg Kroah-Hartman
2012-07-30 17:31 ` [ 06/41] dm raid1: fix crash with mirror recovery and discard Greg Kroah-Hartman
2012-07-30 17:31 ` [ 07/41] mm/vmstat.c: cache align vm_stat Greg Kroah-Hartman
2012-07-30 17:31 ` [ 08/41] mm: memory hotplug: Check if pages are correctly reserved on a per-section basis Greg Kroah-Hartman
2012-07-30 17:31 ` [ 09/41] mm: reduce the amount of work done when updating min_free_kbytes Greg Kroah-Hartman
2012-07-30 17:31 ` [ 10/41] mm: vmscan: fix force-scanning small targets without swap Greg Kroah-Hartman
2012-07-30 17:31 ` [ 11/41] vmscan: clear ZONE_CONGESTED for zone with good watermark Greg Kroah-Hartman
2012-07-30 17:31 ` [ 12/41] vmscan: add shrink_slab tracepoints Greg Kroah-Hartman
2012-07-30 17:31 ` [ 13/41] vmscan: shrinker->nr updates race and go wrong Greg Kroah-Hartman
2012-07-30 17:31 ` [ 14/41] vmscan: reduce wind up shrinker->nr when shrinker cant do work Greg Kroah-Hartman
2012-07-30 17:31 ` [ 15/41] vmscan: limit direct reclaim for higher order allocations Greg Kroah-Hartman
2012-07-30 17:31 ` [ 16/41] vmscan: abort reclaim/compaction if compaction can proceed Greg Kroah-Hartman
2012-07-30 17:31 ` [ 17/41] mm: compaction: trivial clean up in acct_isolated() Greg Kroah-Hartman
2012-07-30 17:31 ` [ 18/41] mm: change isolate mode from #define to bitwise type Greg Kroah-Hartman
2012-07-30 17:31 ` [ 19/41] mm: compaction: make isolate_lru_page() filter-aware Greg Kroah-Hartman
2012-07-30 17:31 ` [ 20/41] mm: zone_reclaim: " Greg Kroah-Hartman
2012-07-30 17:31 ` [ 21/41] mm: migration: clean up unmap_and_move() Greg Kroah-Hartman
2012-07-30 17:31 ` [ 22/41] mm: compaction: allow compaction to isolate dirty pages Greg Kroah-Hartman
2012-07-30 17:31 ` [ 23/41] mm: compaction: determine if dirty pages can be migrated without blocking within ->migratepage Greg Kroah-Hartman
2012-07-30 17:31 ` [ 24/41] mm: page allocator: do not call direct reclaim for THP allocations while compaction is deferred Greg Kroah-Hartman
2012-07-30 17:31 ` [ 25/41] mm: compaction: make isolate_lru_page() filter-aware again Greg Kroah-Hartman
2012-07-30 17:31 ` [ 26/41] kswapd: avoid unnecessary rebalance after an unsuccessful balancing Greg Kroah-Hartman
2012-07-30 17:31 ` [ 27/41] kswapd: assign new_order and new_classzone_idx after wakeup in sleeping Greg Kroah-Hartman
2012-07-30 17:31 ` [ 28/41] mm: compaction: introduce sync-light migration for use by compaction Greg Kroah-Hartman
2012-07-31 16:43 ` Herton Ronaldo Krzesinski
2012-07-31 17:00 ` Greg Kroah-Hartman
2012-07-30 17:31 ` [ 29/41] mm: vmscan: when reclaiming for compaction, ensure there are sufficient free pages available Greg Kroah-Hartman
2012-07-30 17:31 ` [ 30/41] mm: vmscan: do not OOM if aborting reclaim to start compaction Greg Kroah-Hartman
2012-07-30 17:31 ` [ 31/41] mm: vmscan: check if reclaim should really abort even if compaction_ready() is true for one zone Greg Kroah-Hartman
2012-07-30 17:31 ` [ 32/41] vmscan: promote shared file mapped pages Greg Kroah-Hartman
2012-07-30 17:31 ` [ 33/41] vmscan: activate executable pages after first usage Greg Kroah-Hartman
2012-07-30 17:31 ` [ 34/41] mm/vmscan.c: consider swap space when deciding whether to continue reclaim Greg Kroah-Hartman
2012-07-30 17:31 ` Greg Kroah-Hartman [this message]
2012-07-30 17:31 ` [ 36/41] mm: vmscan: convert global reclaim to per-memcg LRU lists Greg Kroah-Hartman
2012-07-30 17:31 ` [ 37/41] cpusets: avoid looping when storing to mems_allowed if one node remains set Greg Kroah-Hartman
2012-07-30 17:31 ` [ 38/41] cpusets: stall when updating mems_allowed for mempolicy or disjoint nodemask Greg Kroah-Hartman
2012-07-30 17:31 ` [ 39/41] cpuset: mm: reduce large amounts of memory barrier related damage v3 Greg Kroah-Hartman
2012-07-30 17:31 ` [ 40/41] mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma Greg Kroah-Hartman
2012-07-30 17:31 ` [ 41/41] vmscan: fix initial shrinker size handling Greg Kroah-Hartman
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