mainline inclusion
from mainline-v5.13-rc1
commit 9f961c2e
category: feature
bugzilla: 181005 https://gitee.com/openeuler/kernel/issues/I4EUY7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9f961c2e08741579aa53095d0dbffbcb25a9ae66

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Do not show no_hash_pointers message multiple times if the option was
passed more than once (e.g. via generated command line).
Signed-off-by: NMarco Elver <elver@google.com>
Reviewed-by: NPetr Mladek <pmladek@suse.com>
Signed-off-by: NPetr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210305194206.3165917-1-elver@google.comSigned-off-by: NPeng Liu <liupeng256@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>