The patch titled
Subject: selftests: cgroup: fix test_kmem_basic less than error
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
selftests-cgroup-fix-test_kmem_basic-less-than-error.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-less-than-error.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 less than error
Date: Fri, 4 Aug 2023 15:35:29 -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 or current is
calculated, it is often above 0, however, 0 is also an acceptable value.
Link: https://lkml.kernel.org/r/7d6gcuyzdjcice6qbphrmpmv5skr5jtglg375unnjxqhstvhxc@qkn6dw6bao6v
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 | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/tools/testing/selftests/cgroup/test_kmem.c~selftests-cgroup-fix-test_kmem_basic-less-than-error
+++ a/tools/testing/selftests/cgroup/test_kmem.c
@@ -75,11 +75,11 @@ 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");
- if (current <= 0)
+ if (current < 0)
goto cleanup;
if (slab1 < slab0 / 2 && current < slab0 / 2)
_
Patches currently in -mm which might be from lkarpins@xxxxxxxxxx are
selftests-cgroup-fix-test_kmem_basic-less-than-error.patch
