lkml.org 
[lkml]   [2015]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 2/2 V3] memory-hotplug: remove reset_node_managed_pages() and reset_node_managed_pages() in hotadd_new_pgdat()
After hotadd_new_pgdat()->free_area_init_node(), pgdat's spanned/present are 0,
and zone's spanned/present/managed are 0, so remove reset_node_managed_pages()
and reset_node_managed_pages().

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
---
mm/memory_hotplug.c | 25 -------------------------
1 files changed, 0 insertions(+), 25 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 49d7c07..ac6462f 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1064,16 +1064,6 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ
}
#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */

-static void reset_node_present_pages(pg_data_t *pgdat)
-{
- struct zone *z;
-
- for (z = pgdat->node_zones; z < pgdat->node_zones + MAX_NR_ZONES; z++)
- z->present_pages = 0;
-
- pgdat->node_present_pages = 0;
-}
-
/* we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG */
static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
{
@@ -1108,21 +1098,6 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
build_all_zonelists(pgdat, NULL);
mutex_unlock(&zonelists_mutex);

- /*
- * zone->managed_pages is set to an approximate value in
- * free_area_init_core(), which will cause
- * /sys/device/system/node/nodeX/meminfo has wrong data.
- * So reset it to 0 before any memory is onlined.
- */
- reset_node_managed_pages(pgdat);
-
- /*
- * When memory is hot-added, all the memory is in offline state. So
- * clear all zones' present_pages because they will be updated in
- * online_pages() and offline_pages().
- */
- reset_node_present_pages(pgdat);
-
return pgdat;
}

--
1.7.1



\
 
 \ /
  Last update: 2015-04-21 13:01    [W:0.049 / U:0.500 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site