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authorMiaohe Lin <linmiaohe@huawei.com>2022-07-04 21:22:01 +0800
committerakpm <akpm@linux-foundation.org>2022-07-17 17:14:47 -0700
commite75858b904b44510b7f4a0f8f1c08dfc0bf9009b (patch)
treed4a1a752c313a2b323bcd87f0dd2342e0cac9452 /mm/huge_memory.c
parentcea3332808f92c0120fb0b157c56d48639e0c713 (diff)
mm/huge_memory: use helper macro IS_ERR_OR_NULL in split_huge_pages_pid
Use helper macro IS_ERR_OR_NULL to check the validity of page to simplify the code. Minor readability improvement. Link: https://lkml.kernel.org/r/20220704132201.14611-17-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Yang Shi <shy828301@gmail.com> Cc: Zach O'Keefe <zokeefe@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
-rw-r--r--mm/huge_memory.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 17e392ec9eb3..814020689d3e 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2958,9 +2958,7 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
/* FOLL_DUMP to ignore special (like zero) pages */
page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP);
- if (IS_ERR(page))
- continue;
- if (!page || is_zone_device_page(page))
+ if (IS_ERR_OR_NULL(page) || is_zone_device_page(page))
continue;
if (!is_transparent_hugepage(page))