From: Mel Gorman <mgorman@techsingularity.net> To: Andrew Morton <akpm@linux-foundation.org>, Linux-MM <linux-mm@kvack.org> Cc: Rik van Riel <riel@surriel.com>, Vlastimil Babka <vbabka@suse.cz>, Johannes Weiner <hannes@cmpxchg.org>, Minchan Kim <minchan@kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@techsingularity.net> Subject: [PATCH 25/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready Date: Fri, 8 Jul 2016 10:35:01 +0100 [thread overview] Message-ID: <1467970510-21195-26-git-send-email-mgorman@techsingularity.net> (raw) In-Reply-To: <1467970510-21195-1-git-send-email-mgorman@techsingularity.net> The scan_control structure has enough information available for compaction_ready() to make a decision. The classzone_idx manipulations in shrink_zones() are no longer necessary as the highest populated zone is no longer used to determine if shrink_slab should be called or not. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> --- mm/vmscan.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index bba71b6c9a4c..6d5c78e2312b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2521,7 +2521,7 @@ static bool shrink_node(pg_data_t *pgdat, struct scan_control *sc) * Returns true if compaction should go ahead for a high-order request, or * the high-order allocation would succeed without compaction. */ -static inline bool compaction_ready(struct zone *zone, int order, int classzone_idx) +static inline bool compaction_ready(struct zone *zone, struct scan_control *sc) { unsigned long watermark; bool watermark_ok; @@ -2532,21 +2532,21 @@ static inline bool compaction_ready(struct zone *zone, int order, int classzone_ * there is a buffer of free pages available to give compaction * a reasonable chance of completing and allocating the page */ - watermark = high_wmark_pages(zone) + (2UL << order); - watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, classzone_idx); + watermark = high_wmark_pages(zone) + (2UL << sc->order); + watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, sc->reclaim_idx); /* * If compaction is deferred, reclaim up to a point where * compaction will have a chance of success when re-enabled */ - if (compaction_deferred(zone, order)) + if (compaction_deferred(zone, sc->order)) return watermark_ok; /* * If compaction is not ready to start and allocation is not likely * to succeed without it, then keep reclaiming. */ - if (compaction_suitable(zone, order, 0, classzone_idx) == COMPACT_SKIPPED) + if (compaction_suitable(zone, sc->order, 0, sc->reclaim_idx) == COMPACT_SKIPPED) return false; return watermark_ok; @@ -2567,7 +2567,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) unsigned long nr_soft_reclaimed; unsigned long nr_soft_scanned; gfp_t orig_mask; - enum zone_type classzone_idx; pg_data_t *last_pgdat = NULL; /* @@ -2578,7 +2577,7 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) orig_mask = sc->gfp_mask; if (buffer_heads_over_limit) { sc->gfp_mask |= __GFP_HIGHMEM; - sc->reclaim_idx = classzone_idx = gfp_zone(sc->gfp_mask); + sc->reclaim_idx = gfp_zone(sc->gfp_mask); } for_each_zone_zonelist_nodemask(zone, z, zonelist, @@ -2587,17 +2586,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) continue; /* - * Note that reclaim_idx does not change as it is the highest - * zone reclaimed from which for empty zones is a no-op but - * classzone_idx is used by shrink_node to test if the slabs - * should be shrunk on a given node. - */ - classzone_idx = sc->reclaim_idx; - while (!populated_zone(zone->zone_pgdat->node_zones + - classzone_idx)) - classzone_idx--; - - /* * Take care memory controller reclaiming has small influence * to global LRU. */ @@ -2621,8 +2609,8 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) */ if (IS_ENABLED(CONFIG_COMPACTION) && sc->order > PAGE_ALLOC_COSTLY_ORDER && - zonelist_zone_idx(z) <= classzone_idx && - compaction_ready(zone, sc->order, classzone_idx)) { + zonelist_zone_idx(z) <= sc->reclaim_idx && + compaction_ready(zone, sc)) { sc->compaction_ready = true; continue; } -- 2.6.4
WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@techsingularity.net> To: Andrew Morton <akpm@linux-foundation.org>, Linux-MM <linux-mm@kvack.org> Cc: Rik van Riel <riel@surriel.com>, Vlastimil Babka <vbabka@suse.cz>, Johannes Weiner <hannes@cmpxchg.org>, Minchan Kim <minchan@kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, LKML <linux-kernel@vger.kernel.org>, Mel Gorman <mgorman@techsingularity.net> Subject: [PATCH 25/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready Date: Fri, 8 Jul 2016 10:35:01 +0100 [thread overview] Message-ID: <1467970510-21195-26-git-send-email-mgorman@techsingularity.net> (raw) In-Reply-To: <1467970510-21195-1-git-send-email-mgorman@techsingularity.net> The scan_control structure has enough information available for compaction_ready() to make a decision. The classzone_idx manipulations in shrink_zones() are no longer necessary as the highest populated zone is no longer used to determine if shrink_slab should be called or not. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> --- mm/vmscan.c | 28 ++++++++-------------------- 1 file changed, 8 insertions(+), 20 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index bba71b6c9a4c..6d5c78e2312b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2521,7 +2521,7 @@ static bool shrink_node(pg_data_t *pgdat, struct scan_control *sc) * Returns true if compaction should go ahead for a high-order request, or * the high-order allocation would succeed without compaction. */ -static inline bool compaction_ready(struct zone *zone, int order, int classzone_idx) +static inline bool compaction_ready(struct zone *zone, struct scan_control *sc) { unsigned long watermark; bool watermark_ok; @@ -2532,21 +2532,21 @@ static inline bool compaction_ready(struct zone *zone, int order, int classzone_ * there is a buffer of free pages available to give compaction * a reasonable chance of completing and allocating the page */ - watermark = high_wmark_pages(zone) + (2UL << order); - watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, classzone_idx); + watermark = high_wmark_pages(zone) + (2UL << sc->order); + watermark_ok = zone_watermark_ok_safe(zone, 0, watermark, sc->reclaim_idx); /* * If compaction is deferred, reclaim up to a point where * compaction will have a chance of success when re-enabled */ - if (compaction_deferred(zone, order)) + if (compaction_deferred(zone, sc->order)) return watermark_ok; /* * If compaction is not ready to start and allocation is not likely * to succeed without it, then keep reclaiming. */ - if (compaction_suitable(zone, order, 0, classzone_idx) == COMPACT_SKIPPED) + if (compaction_suitable(zone, sc->order, 0, sc->reclaim_idx) == COMPACT_SKIPPED) return false; return watermark_ok; @@ -2567,7 +2567,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) unsigned long nr_soft_reclaimed; unsigned long nr_soft_scanned; gfp_t orig_mask; - enum zone_type classzone_idx; pg_data_t *last_pgdat = NULL; /* @@ -2578,7 +2577,7 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) orig_mask = sc->gfp_mask; if (buffer_heads_over_limit) { sc->gfp_mask |= __GFP_HIGHMEM; - sc->reclaim_idx = classzone_idx = gfp_zone(sc->gfp_mask); + sc->reclaim_idx = gfp_zone(sc->gfp_mask); } for_each_zone_zonelist_nodemask(zone, z, zonelist, @@ -2587,17 +2586,6 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) continue; /* - * Note that reclaim_idx does not change as it is the highest - * zone reclaimed from which for empty zones is a no-op but - * classzone_idx is used by shrink_node to test if the slabs - * should be shrunk on a given node. - */ - classzone_idx = sc->reclaim_idx; - while (!populated_zone(zone->zone_pgdat->node_zones + - classzone_idx)) - classzone_idx--; - - /* * Take care memory controller reclaiming has small influence * to global LRU. */ @@ -2621,8 +2609,8 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc) */ if (IS_ENABLED(CONFIG_COMPACTION) && sc->order > PAGE_ALLOC_COSTLY_ORDER && - zonelist_zone_idx(z) <= classzone_idx && - compaction_ready(zone, sc->order, classzone_idx)) { + zonelist_zone_idx(z) <= sc->reclaim_idx && + compaction_ready(zone, sc)) { sc->compaction_ready = true; continue; } -- 2.6.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-07-08 9:42 UTC|newest] Thread overview: 220+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-07-08 9:34 [PATCH 00/34] Move LRU page reclaim from zones to nodes v9 Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 01/34] mm, vmstat: add infrastructure for per-node vmstats Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-08-03 19:13 ` Reza Arbab 2016-08-03 19:13 ` Reza Arbab 2016-07-08 9:34 ` [PATCH 02/34] mm, vmscan: move lru_lock to the node Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 11:06 ` Balbir Singh 2016-07-12 11:06 ` Balbir Singh 2016-07-12 11:18 ` Mel Gorman 2016-07-12 11:18 ` Mel Gorman 2016-07-13 5:50 ` Balbir Singh 2016-07-13 5:50 ` Balbir Singh 2016-07-13 8:39 ` Vlastimil Babka 2016-07-13 8:39 ` Vlastimil Babka 2016-07-08 9:34 ` [PATCH 03/34] mm, vmscan: move LRU lists to node Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-08-04 20:59 ` James Hogan 2016-08-04 20:59 ` James Hogan 2016-08-04 20:59 ` James Hogan 2016-08-05 8:41 ` Mel Gorman 2016-08-05 8:41 ` Mel Gorman 2016-08-05 10:52 ` James Hogan 2016-08-05 10:52 ` James Hogan 2016-08-05 11:55 ` Mel Gorman 2016-08-05 11:55 ` Mel Gorman 2016-08-05 11:55 ` Mel Gorman 2016-08-05 12:02 ` James Hogan 2016-08-05 12:02 ` James Hogan 2016-07-08 9:34 ` [PATCH 04/34] mm, mmzone: clarify the usage of zone padding Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 13:49 ` Johannes Weiner 2016-07-12 13:49 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 05/34] mm, vmscan: begin reclaiming pages on a per-node basis Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 13:54 ` Johannes Weiner 2016-07-12 13:54 ` Johannes Weiner 2016-07-14 9:19 ` Vlastimil Babka 2016-07-14 9:19 ` Vlastimil Babka 2016-07-08 9:34 ` [PATCH 06/34] mm, vmscan: have kswapd only scan based on the highest requested zone Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:05 ` Johannes Weiner 2016-07-12 14:05 ` Johannes Weiner 2016-07-13 8:37 ` Mel Gorman 2016-07-13 8:37 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 07/34] mm, vmscan: make kswapd reclaim in terms of nodes Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-08-29 9:38 ` Srikar Dronamraju 2016-08-29 9:38 ` Srikar Dronamraju 2016-08-30 12:07 ` Mel Gorman 2016-08-30 12:07 ` Mel Gorman 2016-08-30 14:25 ` Srikar Dronamraju 2016-08-30 14:25 ` Srikar Dronamraju 2016-08-30 15:00 ` Mel Gorman 2016-08-30 15:00 ` Mel Gorman 2016-08-31 6:09 ` Srikar Dronamraju 2016-08-31 6:09 ` Srikar Dronamraju 2016-08-31 8:49 ` Mel Gorman 2016-08-31 8:49 ` Mel Gorman 2016-08-31 11:09 ` Michal Hocko 2016-08-31 11:09 ` Michal Hocko 2016-08-31 12:46 ` Mel Gorman 2016-08-31 12:46 ` Mel Gorman 2016-08-31 17:33 ` Srikar Dronamraju 2016-08-31 17:33 ` Srikar Dronamraju 2016-07-08 9:34 ` [PATCH 08/34] mm, vmscan: remove balance gap Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:06 ` Johannes Weiner 2016-07-12 14:06 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 09/34] mm, vmscan: simplify the logic deciding whether kswapd sleeps Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 10/34] mm, vmscan: by default have direct reclaim only shrink once per node Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 11/34] mm, vmscan: remove duplicate logic clearing node congestion and dirty state Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:22 ` Johannes Weiner 2016-07-12 14:22 ` Johannes Weiner 2016-07-13 8:40 ` Mel Gorman 2016-07-13 8:40 ` Mel Gorman 2016-07-14 9:45 ` Vlastimil Babka 2016-07-14 9:45 ` Vlastimil Babka 2016-07-08 9:34 ` [PATCH 12/34] mm: vmscan: do not reclaim from kswapd if there is any eligible zone Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:29 ` Johannes Weiner 2016-07-12 14:29 ` Johannes Weiner 2016-07-13 8:47 ` Mel Gorman 2016-07-13 8:47 ` Mel Gorman 2016-07-13 12:28 ` Johannes Weiner 2016-07-13 12:28 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 13/34] mm, vmscan: make shrink_node decisions more node-centric Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:32 ` Johannes Weiner 2016-07-12 14:32 ` Johannes Weiner 2016-07-13 8:48 ` Mel Gorman 2016-07-13 8:48 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 14/34] mm, memcg: move memcg limit enforcement from zones to nodes Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:38 ` Johannes Weiner 2016-07-12 14:38 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 15/34] mm, workingset: make working set detection node-aware Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 16/34] mm, page_alloc: consider dirtyable memory in terms of nodes Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-08 9:34 ` [PATCH 17/34] mm: move page mapped accounting to the node Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:42 ` Johannes Weiner 2016-07-12 14:42 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 18/34] mm: rename NR_ANON_PAGES to NR_ANON_MAPPED Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 14:58 ` Johannes Weiner 2016-07-12 14:58 ` Johannes Weiner 2016-07-13 8:55 ` Mel Gorman 2016-07-13 8:55 ` Mel Gorman 2016-07-13 13:04 ` Johannes Weiner 2016-07-13 13:04 ` Johannes Weiner 2016-07-13 13:37 ` Mel Gorman 2016-07-13 13:37 ` Mel Gorman 2016-07-13 21:13 ` Andrew Morton 2016-07-13 21:13 ` Andrew Morton 2016-07-15 10:46 ` Mel Gorman 2016-07-15 10:46 ` Mel Gorman 2016-07-15 22:35 ` Andrew Morton 2016-07-15 22:35 ` Andrew Morton 2016-07-18 13:34 ` Johannes Weiner 2016-07-18 13:34 ` Johannes Weiner 2016-07-14 1:27 ` Minchan Kim 2016-07-14 1:27 ` Minchan Kim 2016-07-08 9:34 ` [PATCH 19/34] mm: move most file-based accounting to the node Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 15:11 ` Johannes Weiner 2016-07-12 15:11 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 20/34] mm: move vmscan writes and file write " Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 15:15 ` Johannes Weiner 2016-07-12 15:15 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 21/34] mm, vmscan: only wakeup kswapd once per node for the requested classzone Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 17:18 ` Johannes Weiner 2016-07-12 17:18 ` Johannes Weiner 2016-07-08 9:34 ` [PATCH 22/34] mm, page_alloc: wake kswapd based on the highest eligible zone Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 17:24 ` Johannes Weiner 2016-07-12 17:24 ` Johannes Weiner 2016-07-14 10:05 ` Vlastimil Babka 2016-07-14 10:05 ` Vlastimil Babka 2016-07-08 9:34 ` [PATCH 23/34] mm: convert zone_reclaim to node_reclaim Mel Gorman 2016-07-08 9:34 ` Mel Gorman 2016-07-12 17:28 ` Johannes Weiner 2016-07-12 17:28 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 24/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to shrink_node Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 17:31 ` Johannes Weiner 2016-07-12 17:31 ` Johannes Weiner 2016-07-14 10:09 ` Vlastimil Babka 2016-07-14 10:09 ` Vlastimil Babka 2016-07-08 9:35 ` Mel Gorman [this message] 2016-07-08 9:35 ` [PATCH 25/34] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction_ready Mel Gorman 2016-07-12 18:01 ` Johannes Weiner 2016-07-12 18:01 ` Johannes Weiner 2016-07-14 12:12 ` Vlastimil Babka 2016-07-14 12:12 ` Vlastimil Babka 2016-07-08 9:35 ` [PATCH 26/34] mm, vmscan: avoid passing in remaining unnecessarily to prepare_kswapd_sleep Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 18:06 ` Johannes Weiner 2016-07-12 18:06 ` Johannes Weiner 2016-07-14 12:48 ` Vlastimil Babka 2016-07-14 12:48 ` Vlastimil Babka 2016-07-08 9:35 ` [PATCH 27/34] mm, vmscan: Have kswapd reclaim from all zones if reclaiming and buffer_heads_over_limit Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 18:10 ` Johannes Weiner 2016-07-12 18:10 ` Johannes Weiner 2016-07-14 12:54 ` Vlastimil Babka 2016-07-14 12:54 ` Vlastimil Babka 2016-07-08 9:35 ` [PATCH 28/34] mm, vmscan: add classzone information to tracepoints Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 18:13 ` Johannes Weiner 2016-07-12 18:13 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 29/34] mm, page_alloc: remove fair zone allocation policy Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 18:18 ` Johannes Weiner 2016-07-12 18:18 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 30/34] mm: page_alloc: cache the last node whose dirty limit is reached Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 18:43 ` Johannes Weiner 2016-07-12 18:43 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 31/34] mm: vmstat: replace __count_zone_vm_events with a zone id equivalent Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 19:10 ` Johannes Weiner 2016-07-12 19:10 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 32/34] mm: vmstat: account per-zone stalls and pages skipped during reclaim Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 19:06 ` Johannes Weiner 2016-07-12 19:06 ` Johannes Weiner 2016-07-08 9:35 ` [PATCH 33/34] mm, vmstat: print node-based stats in zoneinfo file Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-12 19:18 ` Johannes Weiner 2016-07-12 19:18 ` Johannes Weiner 2016-07-14 12:56 ` Vlastimil Babka 2016-07-14 12:56 ` Vlastimil Babka 2016-07-08 9:35 ` [PATCH 34/34] mm, vmstat: remove zone and node double accounting by approximating retries Mel Gorman 2016-07-08 9:35 ` Mel Gorman 2016-07-14 13:40 ` Vlastimil Babka 2016-07-14 13:40 ` Vlastimil Babka 2016-07-15 7:48 ` Mel Gorman 2016-07-15 7:48 ` Mel Gorman 2016-07-15 12:20 ` Vlastimil Babka 2016-07-15 12:20 ` Vlastimil Babka 2016-08-19 13:12 ` [PATCH 00/34] Move LRU page reclaim from zones to nodes v9 Andrea Arcangeli 2016-08-19 13:12 ` Andrea Arcangeli 2016-08-19 13:23 ` Vlastimil Babka 2016-08-19 13:23 ` Vlastimil Babka 2016-08-19 13:55 ` Andrea Arcangeli 2016-08-19 13:55 ` Andrea Arcangeli 2016-08-19 14:53 ` Mel Gorman 2016-08-19 14:53 ` Mel Gorman 2016-08-19 15:32 ` Andrea Arcangeli 2016-08-19 15:32 ` Andrea Arcangeli 2016-08-19 15:55 ` Mel Gorman 2016-08-19 15:55 ` Mel Gorman
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