linux-kernel - [PATCH 3/6] mm: shmem: remove duplicate error validation

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Message-Id: <dfadaba4c8b24c5ae1467fe8b6744b654c65ec91.1738918357.git.baolin.wang@linux.alibaba.com>
Date: Fri,  7 Feb 2025 17:44:19 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: akpm@...ux-foundation.org,
	hughd@...gle.com
Cc: david@...hat.com,
	baolin.wang@...ux.alibaba.com,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] mm: shmem: remove duplicate error validation

Remove duplicate error code checks for 'start' and 'end', as the
get_order_from_str() will only return -EINVAL if the cmdline string
is configured incorrectly.

Signed-off-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
---
 mm/shmem.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index b7aef4f0a427..b764ad336598 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -5650,19 +5650,19 @@ static int __init setup_thp_shmem(char *str)
 								 THP_ORDERS_ALL_FILE_DEFAULT);
 			}
 
-			if (start == -EINVAL) {
+			if (start < 0) {
 				pr_err("invalid size %s in thp_shmem boot parameter\n",
 				       start_size);
 				goto err;
 			}
 
-			if (end == -EINVAL) {
+			if (end < 0) {
 				pr_err("invalid size %s in thp_shmem boot parameter\n",
 				       end_size);
 				goto err;
 			}
 
-			if (start < 0 || end < 0 || start > end)
+			if (start > end)
 				goto err;
 
 			nr = end - start + 1;
-- 
2.39.3