The patch titled
Subject: selftests: cgroup: fix test_kmem_basic slab1 check
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
selftests-cgroup-fix-test_kmem_basic-slab1-check.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-cgroup-fix-test_kmem_basic-slab1-check.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Lucas Karpinski <lkarpins@xxxxxxxxxx>
Subject: selftests: cgroup: fix test_kmem_basic slab1 check
Date: Thu, 3 Aug 2023 14:25:00 -0400
test_kmem_basic creates 100,000 negative dentries, with each one mapping
to a slab object. After memory.high is set, these are reclaimed through
the shrink_slab function call which reclaims all 100,000 entries. The
test passes the majority of the time because when slab1 is calculated, it
is often above 0, however, 0 is also an acceptable value.
Link: https://lkml.kernel.org/r/zff2gqiy4cggy4px2hbcyna6eipy56qc4itx5cx5agtxlzdxt7@dvfdarqkucac
Signed-off-by: Lucas Karpinski <lkarpins@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Zefan Li <lizefan.x@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/cgroup/test_kmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/cgroup/test_kmem.c~selftests-cgroup-fix-test_kmem_basic-slab1-check
+++ a/tools/testing/selftests/cgroup/test_kmem.c
@@ -75,7 +75,7 @@ static int test_kmem_basic(const char *r
sleep(1);
slab1 = cg_read_key_long(cg, "memory.stat", "slab ");
- if (slab1 <= 0)
+ if (slab1 < 0)
goto cleanup;
current = cg_read_long(cg, "memory.current");
_
Patches currently in -mm which might be from lkarpins@xxxxxxxxxx are
selftests-cgroup-fix-test_kmem_basic-slab1-check.patch
