The patch titled
Subject: mm: treat indirectly reclaimable memory as available in MemAvailable
has been added to the -mm tree. Its filename is
mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable.patch
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------------------------------------------------------
From: Roman Gushchin <guro@xxxxxx>
Subject: mm: treat indirectly reclaimable memory as available in MemAvailable
Adjust /proc/meminfo MemAvailable calculation by adding the amount of
indirectly reclaimable memory (rounded to the PAGE_SIZE).
Link: http://lkml.kernel.org/r/20180305133743.12746-4-guro@xxxxxx
Signed-off-by: Roman Gushchin <guro@xxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN mm/page_alloc.c~mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable mm/page_alloc.c
--- a/mm/page_alloc.c~mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable
+++ a/mm/page_alloc.c
@@ -4712,6 +4712,13 @@ 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;
_
Patches currently in -mm which might be from guro@xxxxxx are
mm-introduce-nr_indirectly_reclaimable_bytes.patch
mm-treat-indirectly-reclaimable-memory-as-available-in-memavailable.patch
dcache-account-external-names-as-indirectly-reclaimable-memory.patch
mm-oom-refactor-the-oom_kill_process-function.patch
mm-implement-mem_cgroup_scan_tasks-for-the-root-memory-cgroup.patch
mm-oom-cgroup-aware-oom-killer.patch
mm-oom-introduce-memoryoom_group.patch
mm-oom-introduce-memoryoom_group-fix.patch
mm-oom-add-cgroup-v2-mount-option-for-cgroup-aware-oom-killer.patch
mm-oom-docs-describe-the-cgroup-aware-oom-killer.patch
mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix.patch
cgroup-list-groupoom-in-cgroup-features.patch
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