From: Roman Gushchin <guro@fb.com>
To: <linux-mm@kvack.org>
Cc: Roman Gushchin <guro@fb.com>,
Andrew Morton <akpm@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>,
<linux-fsdevel@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kernel-team@fb.com>
Subject: [PATCH 2/3] mm: add indirectly reclaimable memory to MemAvailable
Date: Mon, 5 Mar 2018 13:37:41 +0000 [thread overview]
Message-ID: <20180305133743.12746-3-guro@fb.com> (raw)
In-Reply-To: <20180305133743.12746-1-guro@fb.com>
This patch adjusts /proc/meminfo MemAvailable calculation
by adding the amount of indirectly reclaimable memory
(rounded to the PAGE_SIZE).
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: kernel-team@fb.com
---
mm/page_alloc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 2836bc9e0999..2247cda9e94e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4695,6 +4695,13 @@ long si_mem_available(void)
min(global_node_page_state(NR_SLAB_RECLAIMABLE) / 2,
wmark_low);
+ /*
+ * Part of the kernel memory, which can be released under memory
+ * pressure.
+ */
+ available += global_node_page_state(NR_INDIRECTLY_RECLAIMABLE_BYTES) >>
+ PAGE_SHIFT;
+
if (available < 0)
available = 0;
return available;
--
2.14.3
--
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next prev parent reply other threads:[~2018-03-05 13:37 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-05 13:37 [PATCH 0/3] indirectly reclaimable memory Roman Gushchin
2018-03-05 13:37 ` [PATCH 1/3] mm: introduce NR_INDIRECTLY_RECLAIMABLE_BYTES Roman Gushchin
2018-04-11 13:16 ` Vlastimil Babka
2018-04-11 13:56 ` Roman Gushchin
2018-04-12 6:52 ` Vlastimil Babka
2018-04-12 11:52 ` Michal Hocko
2018-04-12 14:38 ` Roman Gushchin
2018-04-12 14:46 ` Michal Hocko
2018-04-12 14:57 ` Roman Gushchin
2018-04-13 6:59 ` Michal Hocko
2018-04-13 12:13 ` vinayak menon
2018-04-25 3:49 ` Vijayanand Jitta
2018-04-25 12:52 ` Roman Gushchin
2018-04-25 15:47 ` Vlastimil Babka
2018-04-25 16:48 ` Roman Gushchin
2018-04-25 17:02 ` Vlastimil Babka
2018-04-25 17:23 ` Roman Gushchin
2018-04-25 15:55 ` Matthew Wilcox
2018-04-25 16:59 ` Vlastimil Babka
2018-03-05 13:37 ` Roman Gushchin [this message]
2018-03-05 13:47 ` [PATCH 2/3] mm: add indirectly reclaimable memory to MemAvailable Roman Gushchin
2018-03-05 13:37 ` [PATCH 2/3] mm: treat indirectly reclaimable memory as available in MemAvailable Roman Gushchin
2018-03-05 13:37 ` [PATCH 3/3] dcache: account external names as indirectly reclaimable memory Roman Gushchin
2018-03-12 21:17 ` Al Viro
2018-03-12 22:36 ` Roman Gushchin
2018-03-13 0:45 ` Al Viro
2018-04-05 22:11 ` Andrew Morton
2018-04-06 10:32 ` Roman Gushchin
2018-04-13 13:35 ` Minchan Kim
2018-04-13 13:59 ` Michal Hocko
2018-04-13 14:20 ` Vlastimil Babka
2018-04-13 14:28 ` Michal Hocko
2018-04-13 14:37 ` Johannes Weiner
2018-04-16 11:41 ` Michal Hocko
2018-04-16 12:06 ` Vlastimil Babka
2018-04-16 12:27 ` Michal Hocko
2018-04-16 19:57 ` Vlastimil Babka
2018-04-17 6:44 ` Michal Hocko
2018-04-16 13:09 ` Matthew Wilcox
2018-04-17 11:24 ` Roman Gushchin
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