Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Jules Irenge <jbi.octave@gmail.com>
To:     boqun.feng@gmail.com
Cc:     jbi.octave@gmail.com, linux-kernel@vger.kernel.org,
        Minchan Kim <minchan@kernel.org>,
        Nitin Gupta <ngupta@vflare.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-mm@kvack.org (open list:ZSMALLOC COMPRESSED SLAB MEMORY ALLOCATOR)
Subject: [PATCH 19/30] mm/zsmalloc: Add missing annotation for migrate_write_lock()
Date:   Sun, 23 Feb 2020 23:17:00 +0000
Message-Id: <20200223231711.157699-20-jbi.octave@gmail.com>
In-Reply-To: <20200223231711.157699-1-jbi.octave@gmail.com>
References: <0/30>
 <20200223231711.157699-1-jbi.octave@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Sparse reports a warning at migrate_write_lock()
warning: context imbalance in migrate_write_lock() - wrong count at exit
The root cause is the missing annotation at migrate_write_lock()
Add the missing __acquires(&zspage->lock)

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
---
 mm/zsmalloc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 10a96651cb97..7ec69a1140cf 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1846,6 +1846,7 @@ static void migrate_read_unlock(struct zspage *zspage) __releases(&zspage->lock)
 }
 
 static void migrate_write_lock(struct zspage *zspage)
+	__acquires(&zspage->lock)
 {
 	write_lock(&zspage->lock);
 }
-- 
2.24.1