From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Roman Gushchin To: CC: Roman Gushchin , Andrew Morton , Alexander Viro , Michal Hocko , Johannes Weiner , , , Subject: [PATCH 2/3] mm: treat indirectly reclaimable memory as available in MemAvailable Date: Mon, 5 Mar 2018 13:37:42 +0000 Message-ID: <20180305133743.12746-4-guro@fb.com> In-Reply-To: <20180305133743.12746-1-guro@fb.com> References: <20180305133743.12746-1-guro@fb.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: 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 Cc: Andrew Morton Cc: Alexander Viro Cc: Michal Hocko Cc: Johannes Weiner 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 -- 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: email@kvack.org