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Sun, 8 Apr 2018 20:21:09 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Tang Junhui , Jens Axboe , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 163/189] bcache: return attach error when no cache set exist Thread-Topic: [PATCH AUTOSEL for 4.15 163/189] bcache: return attach error when no cache set exist Thread-Index: AQHTz5haGR2iRpd76keGFnORsw68xQ== Date: Mon, 9 Apr 2018 00:18:58 +0000 Message-ID: <20180409001637.162453-163-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1110;7:XD9T82PgmQASZSV5IW/ksrdi/y/bkXQo1/IOTebaRHui29Ut59gwReqWJaC/6P+ImHbQ+dk/NCwUs+KJ+Hy26Cyk0ZzyiBlNkRdtSkRVQ83aN1d5eMKWfH9jypxhXh7FdZ1rw+XDr0+YjDMZXCyt49hlVJ4e67hWOTYwZzZ0E61EC3gYgcLcqNAI4rRsBFfUhUVHDMtoQ2IfsNrCyLIos8N6qooT3qAmRG4aVoHn0AUJtAMU1zap7OhiwZPO45uP;20:QHAztTMfkI6oJZRGmGluSHzfzP1xQ7GYuzjJw4JvS8qbL1F1xTwXqhzpy9IbXtmnyg6aH6mmDBWn1gu8CPW5YtpzWBMsCiwr/qogPMoYCKe4uXAihZvHM3bDlC16VZnYoCyGj0nsW6TmsylIHegKB6BsLCsb2u9XkyBBdobUVlM= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: ecd5abee-201d-4287-1021-08d59dafc94f x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB1110; 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This patch fixes this issue by assigning "v" with "-ENOENT" in the initialization. Signed-off-by: Tang Junhui Reviewed-by: Michael Lyle Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- drivers/md/bcache/sysfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index c54028b92bc0..6316399aa230 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -195,7 +195,7 @@ STORE(__cached_dev) { struct cached_dev *dc =3D container_of(kobj, struct cached_dev, disk.kobj); - ssize_t v =3D size; + ssize_t v; struct cache_set *c; struct kobj_uevent_env *env; =20 @@ -272,6 +272,7 @@ STORE(__cached_dev) if (bch_parse_uuid(buf, set_uuid) < 16) return -EINVAL; =20 + v =3D -ENOENT; list_for_each_entry(c, &bch_cache_sets, list) { v =3D bch_cached_dev_attach(dc, c, set_uuid); if (!v) @@ -279,7 +280,7 @@ STORE(__cached_dev) } =20 pr_err("Can't attach %s: cache set not found", buf); - size =3D v; + return v; } =20 if (attr =3D=3D &sysfs_detach && dc->disk.c) --=20 2.15.1