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[2.102.13.223]) by smtp.googlemail.com with ESMTPSA id q6sm8968203wrf.67.2020.02.23.15.18.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Feb 2020 15:18:16 -0800 (PST) From: Jules Irenge To: boqun.feng@gmail.com Cc: jbi.octave@gmail.com, linux-kernel@vger.kernel.org, Minchan Kim , Nitin Gupta , Sergey Senozhatsky , Andrew Morton , 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> X-Mailer: git-send-email 2.24.1 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: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000461, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 --- 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 *zspa= ge) __releases(&zspage->lock) } =20 static void migrate_write_lock(struct zspage *zspage) + __acquires(&zspage->lock) { write_lock(&zspage->lock); } --=20 2.24.1