linux-kernel - [PATCH] mm: compaction.c: Propagate return value upstream

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Date:   Wed, 26 Dec 2018 13:42:56 -0600
From:   Aditya Pakki <pakki001@....edu>
To:     pakki001@....edu
Cc:     kjlu@....edu, Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        David Rientjes <rientjes@...gle.com>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Joe Perches <joe@...ches.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: compaction.c: Propagate return value upstream

In sysctl_extfrag_handler(), proc_dointvec_minmax() can return an
error. The fix propagates the error upstream in case of failure.

Signed-off-by: Aditya Pakki <pakki001@....edu>
---
 mm/compaction.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 7c607479de4a..d108974d0867 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1879,9 +1879,7 @@ int sysctl_compaction_handler(struct ctl_table *table, int write,
 int sysctl_extfrag_handler(struct ctl_table *table, int write,
 			void __user *buffer, size_t *length, loff_t *ppos)
 {
-	proc_dointvec_minmax(table, write, buffer, length, ppos);
-
-	return 0;
+	return proc_dointvec_minmax(table, write, buffer, length, ppos);
 }
 
 #if defined(CONFIG_SYSFS) && defined(CONFIG_NUMA)
-- 
2.17.1