From a28dc358e28fb0738dd23e401cd7646cb4b0f7f1 Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Mon, 12 Aug 2024 21:12:10 +0300
Subject: [PATCH] block: constify ext_pi_ref_escape()

This function doesn't mutate data.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/d24611b3-dddf-473a-903d-39290db03b11@p183
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 block/t10-pi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/t10-pi.c b/block/t10-pi.c
index 4a90d200ae7b..e7052a728966 100644
--- a/block/t10-pi.c
+++ b/block/t10-pi.c
@@ -239,9 +239,9 @@ static void ext_pi_crc64_generate(struct blk_integrity_iter *iter,
 	}
 }
 
-static bool ext_pi_ref_escape(u8 *ref_tag)
+static bool ext_pi_ref_escape(const u8 ref_tag[6])
 {
-	static u8 ref_escape[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+	static const u8 ref_escape[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 
 	return memcmp(ref_tag, ref_escape, sizeof(ref_escape)) == 0;
 }