4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Roman Gushchin <g...@fb.com> commit 034ebf65c3c21d85b963d39f992258a64a85e3a9 upstream. 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-g...@fb.com Signed-off-by: Roman Gushchin <g...@fb.com> Reviewed-by: Andrew Morton <a...@linux-foundation.org> Cc: Alexander Viro <v...@zeniv.linux.org.uk> Cc: Michal Hocko <mho...@suse.com> Cc: Johannes Weiner <han...@cmpxchg.org> Cc: Mel Gorman <mgor...@techsingularity.net> Signed-off-by: Andrew Morton <a...@linux-foundation.org> Signed-off-by: Linus Torvalds <torva...@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- mm/page_alloc.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4557,6 +4557,13 @@ 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;
