linux-kernel - [PATCH][next] bpf: replace redundant |= operation with assignmen

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Message-Id: <20241031130704.3249126-1-colin.i.king@gmail.com>
Date: Thu, 31 Oct 2024 13:07:04 +0000
From: Colin Ian King <colin.i.king@...il.com>
To: Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Eduard Zingerman <eddyz87@...il.com>,
	Song Liu <song@...nel.org>,
	Yonghong Song <yonghong.song@...ux.dev>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Hao Luo <haoluo@...gle.com>,
	Jiri Olsa <jolsa@...nel.org>,
	bpf@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH][next] bpf: replace redundant |= operation with assignmen

The operation msk |= ~0ULL contains a redundant bit-wise or operation
since all the bits are going to be set to 1, so replace this with
an assignment since this is more optimal and probably clearer too.

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 kernel/bpf/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c
index 9aaf5124648b..fea07e12601f 100644
--- a/kernel/bpf/inode.c
+++ b/kernel/bpf/inode.c
@@ -914,7 +914,7 @@ static int bpf_parse_param(struct fs_context *fc, struct fs_parameter *param)
 		str = param->string;
 		while ((p = strsep(&str, ":"))) {
 			if (strcmp(p, "any") == 0) {
-				msk |= ~0ULL;
+				msk = ~0ULL;
 			} else if (find_btf_enum_const(info.btf, enum_t, enum_pfx, p, &val)) {
 				msk |= 1ULL << val;
 			} else {
-- 
2.39.5