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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-11-10 07:07:51 +0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:58:54 -0800 |
| commit | 4a625ceee8a0ab0273534cb6b432ce6b331db5ee (patch) | |
| tree | 6e8fc35a9ddd5d0ba17732374ef5f3ad143e379c /mm/memory-tiers.c | |
| parent | eaec4e639f11413ce75fbf38affd1aa5c40979e9 (diff) | |
| download | linux-4a625ceee8a0ab0273534cb6b432ce6b331db5ee.tar.bz2 | |
mm/demotion: fix NULL vs IS_ERR checking in memory_tier_init
alloc_memory_type() returns error pointers on error instead of NULL. Use
IS_ERR() to check the return value to fix this.
Link: https://lkml.kernel.org/r/20221110030751.1627266-1-linmq006@gmail.com
Fixes: 7b88bda3761b ("mm/demotion/dax/kmem: set node's abstract distance to MEMTIER_DEFAULT_DAX_ADISTANCE")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Wei Xu <weixugc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory-tiers.c')
| -rw-r--r-- | mm/memory-tiers.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index 939e200c283b..c734658c6242 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -645,7 +645,7 @@ static int __init memory_tier_init(void) * than default DRAM tier. */ default_dram_type = alloc_memory_type(MEMTIER_ADISTANCE_DRAM); - if (!default_dram_type) + if (IS_ERR(default_dram_type)) panic("%s() failed to allocate default DRAM tier\n", __func__); /* |