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Sat, 3 Feb 2018 13:23:49 -0500 Received: from mail-bl2nam02on0091.outbound.protection.outlook.com ([104.47.38.91]:45338 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753205AbeBCSGV (ORCPT ); Sat, 3 Feb 2018 13:06:21 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Al Viro , Sasha Levin Subject: [PATCH AUTOSEL for 3.18 04/24] sget(): handle failures of register_shrinker() Thread-Topic: [PATCH AUTOSEL for 3.18 04/24] sget(): handle failures of register_shrinker() Thread-Index: AQHTnRmBy5dMhe8E80GfYWTEhAGqGA== Date: Sat, 3 Feb 2018 18:04:59 +0000 Message-ID: <20180203180444.10801-4-alexander.levin@microsoft.com> References: <20180203180444.10801-1-alexander.levin@microsoft.com> In-Reply-To: <20180203180444.10801-1-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;BL0PR2101MB0993;7:UZ4M28RywibYI34Vus8iPBoKpxhhuctkhFlM9H2sVZZtMVgIJLGCoF8KQqgDCnpE8I4vBOCrl2xhm9H4hIvCmYl5vCAWwRTwPu8WEST6BGw/sDfbEotw0xiUdgaHneH6OZtMbiR4/jRn+SzmbNh9Raji+90IT4gXHk3mGivBXHbjRuniDZfcoE+BNomlZvkv2YihPYinKwY54TrGPrpMzfOMc5JUl//Rt21Rv/LGIHPJIIUtqxjZ7EG2cgODc75S x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: d0d1cbf3-5cab-4856-689f-08d56b30cb25 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:BL0PR2101MB0993; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: 8CcyLsUvSzmFFJ+p5cc3tXWQ68XAuiXlN9ZwZ3pDyIeB68W3V+qTwVoibmRFPtduvmfDaQfr2tbGQY1fRiqXKg== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: d0d1cbf3-5cab-4856-689f-08d56b30cb25 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Feb 2018 18:04:59.3777 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR2101MB0993 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Al Viro [ Upstream commit 9ee332d99e4d5a97548943b81c54668450ce641b ] Signed-off-by: Al Viro Signed-off-by: Sasha Levin --- fs/super.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/super.c b/fs/super.c index 19fafe86071a..d4731c401278 100644 --- a/fs/super.c +++ b/fs/super.c @@ -476,7 +476,11 @@ retry: hlist_add_head(&s->s_instances, &type->fs_supers); spin_unlock(&sb_lock); get_filesystem(type); - register_shrinker(&s->s_shrink); + err =3D register_shrinker(&s->s_shrink); + if (err) { + deactivate_locked_super(s); + s =3D ERR_PTR(err); + } return s; } =20 --=20 2.11.0