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Sat, 3 Feb 2018 13:35:29 -0500 Received: from mail-bl2nam02on0090.outbound.protection.outlook.com ([104.47.38.90]:50784 "EHLO NAM02-BL2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753263AbeBCSDu (ORCPT ); Sat, 3 Feb 2018 13:03:50 -0500 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Al Viro , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 10/52] sget(): handle failures of register_shrinker() Thread-Topic: [PATCH AUTOSEL for 4.9 10/52] sget(): handle failures of register_shrinker() Thread-Index: AQHTnRlRODPbRD+6UESRMzNrkKRPUg== Date: Sat, 3 Feb 2018 18:03:38 +0000 Message-ID: <20180203180303.8490-10-alexander.levin@microsoft.com> References: <20180203180303.8490-1-alexander.levin@microsoft.com> In-Reply-To: <20180203180303.8490-1-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;BL0PR2101MB1091;7:vrS0U6PGShfOr93/ZtMLFuCtf6l/725qdCV7YiXWAD4qITnnG3pXepgdY7Gsgd/X8PaU8S9wWAB5KbZQcdYtgdoAJj7eCcDAc6rY6wTo1WGLFOC5vK3qdOBegoFjGGyXG5KlDry5IrSf02KKzFMGq7sIQMmYkdlGDsd337FfmbBVauOqz6biWtsR/Gr1d3pfzBpuiy3y4DNlif4DyKD8juDY7kqZ7jzfFcw4v9pyU3Ee1cUzq/Wm6SSycpoOp+aL x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 2b2ac234-07b7-4cd2-ce16-08d56b3073bd x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(2017052603307)(7193020);SRVR:BL0PR2101MB1091; 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authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-message-info: bkh+46rtcpZsayi+a5k4hj3RAX23qmQ3LsWi05rRH5UOmLcdCZM1x+fi7YrBcBJw+4B0A1ZEquA0RdKhlpAyxA== 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: 2b2ac234-07b7-4cd2-ce16-08d56b3073bd X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Feb 2018 18:03:38.3464 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR2101MB1091 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 1058bf3e8724..7e9beab77259 100644 --- a/fs/super.c +++ b/fs/super.c @@ -519,7 +519,11 @@ 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