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Message-ID: <m6jbt5hzq27ygt3l4xyiaxxb7i5auvb2lahbcj4yaxxigqzu5e@5rn6s2yjzv7u>
Date: Wed, 2 Aug 2023 14:41:05 -0400
From: Lucas Karpinski <lkarpins@...hat.com>
To: hannes@...xchg.org, mhocko@...nel.org, roman.gushchin@...ux.dev,
shakeelb@...gle.com, muchun.song@...ux.dev, tj@...nel.org,
lizefan.x@...edance.com, shuah@...nel.org
Cc: muchun.song@...ux.dev, cgroups@...r.kernel.org, linux-mm@...ck.org,
linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] kselftests: cgroup: fix kmem test slab1 check
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.
Signed-off-by: Lucas Karpinski <lkarpins@...hat.com>
---
tools/testing/selftests/cgroup/test_kmem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/cgroup/test_kmem.c b/tools/testing/selftests/cgroup/test_kmem.c
index 258ddc565deb..ba0a0bfc5a98 100644
--- a/tools/testing/selftests/cgroup/test_kmem.c
+++ b/tools/testing/selftests/cgroup/test_kmem.c
@@ -71,7 +71,7 @@ static int test_kmem_basic(const char *root)
cg_write(cg, "memory.high", "1M");
slab1 = cg_read_key_long(cg, "memory.stat", "slab ");
- if (slab1 <= 0)
+ if (slab1 < 0)
goto cleanup;
current = cg_read_long(cg, "memory.current");
--
2.41.0
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