[pve-devel] [PATCH common] fix #3527: cgroup: drop file buffers from memory usage

[Wolfgang Bumiller <w.bumiller@proxmox.com>]

matches the behavior of lxcfs

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
---
 src/PVE/CGroup.pm | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/PVE/CGroup.pm b/src/PVE/CGroup.pm
index f82cbb9..21681b8 100644
--- a/src/PVE/CGroup.pm
+++ b/src/PVE/CGroup.pm
@@ -341,13 +341,11 @@ sub get_memory_stat {
     } elsif ($ver == 2) {
 	my $mem = file_get_contents("$path/memory.current");
 	my $swap = file_get_contents("$path/memory.swap.current");
+	my $stat = parse_flat_keyed_file(file_get_contents("$path/memory.stat"));
 
 	chomp ($mem, $swap);
 
-	# FIXME: For the cgv1 equivalent of `total_cache` we may need to sum up
-	# the values in `memory.stat`...
-
-	$res->{mem} = $mem;
+	$res->{mem} = $mem - $stat->{file};
 	$res->{swap} = $swap;
     } elsif ($ver == 1) {
 	# cgroupv1 environment:
-- 
2.30.2