From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Rothwell Subject: Re: linux-next: build warnings after merge of the block tree Date: Tue, 26 Nov 2013 14:35:50 +1100 Message-ID: <20131126143550.7a2195476ff4aa5c73db20b2@canb.auug.org.au> References: <20131126132946.e402679788ae8269f0c5128a@canb.auug.org.au> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA256"; boundary="Signature=_Tue__26_Nov_2013_14_35_50_+1100_Y/PZPIYZJkUSC7iG" Return-path: Received: from haggis.pcug.org.au ([203.10.76.10]:59344 "EHLO members.tip.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752674Ab3KZDgA (ORCPT ); Mon, 25 Nov 2013 22:36:00 -0500 In-Reply-To: <20131126132946.e402679788ae8269f0c5128a@canb.auug.org.au> Sender: linux-next-owner@vger.kernel.org List-ID: To: Jens Axboe Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, Kent Overstreet --Signature=_Tue__26_Nov_2013_14_35_50_+1100_Y/PZPIYZJkUSC7iG Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi all, On Tue, 26 Nov 2013 13:29:46 +1100 Stephen Rothwell = wrote: > > After merging the block tree, today's linux-next build (arm > multi_v7_defconfig) produced these warnings: >=20 > block/blk-merge.c: In function 'blk_rq_map_sg': > block/blk-merge.c:133:8: warning: 'bvprv.bv_len' may be used uninitialize= d in this function [-Wuninitialized] > block/blk-merge.c:171:23: note: 'bvprv.bv_len' was declared here > block/blk-merge.c:133:8: warning: 'bvprv.bv_page' may be used uninitializ= ed in this function [-Wuninitialized] > block/blk-merge.c:171:23: note: 'bvprv.bv_page' was declared here > block/blk-merge.c:133:8: warning: 'bvprv.bv_offset' may be used uninitial= ized in this function [-Wuninitialized] > block/blk-merge.c:171:23: note: 'bvprv.bv_offset' was declared here > block/blk-merge.c: In function 'blk_bio_map_sg': > block/blk-merge.c:133:8: warning: 'bvprv.bv_len' may be used uninitialize= d in this function [-Wuninitialized] > block/blk-merge.c:233:23: note: 'bvprv.bv_len' was declared here > block/blk-merge.c:133:8: warning: 'bvprv.bv_offset' may be used uninitial= ized in this function [-Wuninitialized] > block/blk-merge.c:233:23: note: 'bvprv.bv_offset' was declared here > block/blk-merge.c:133:8: warning: 'bvprv.bv_page' may be used uninitializ= ed in this function [-Wuninitialized] > block/blk-merge.c:233:23: note: 'bvprv.bv_page' was declared here > block/blk-merge.c: In function 'attempt_merge': > block/blk-merge.c:108:7: warning: 'end_bv.bv_offset' may be used uninitia= lized in this function [-Wuninitialized] > block/blk-merge.c:89:17: note: 'end_bv.bv_offset' was declared here > block/blk-merge.c:108:7: warning: 'end_bv.bv_page' may be used uninitiali= zed in this function [-Wuninitialized] > block/blk-merge.c:89:17: note: 'end_bv.bv_page' was declared here > block/blk-merge.c:108:7: warning: 'end_bv.bv_len' may be used uninitializ= ed in this function [-Wuninitialized] > block/blk-merge.c:89:17: note: 'end_bv.bv_len' was declared here >=20 > arm has its own definition of BIOVEC_PHYS_MERGEABLE() if that is relevant. For an easier test case, the i386 defcongig does this as well. --=20 Cheers, Stephen Rothwell sfr@canb.auug.org.au --Signature=_Tue__26_Nov_2013_14_35_50_+1100_Y/PZPIYZJkUSC7iG Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBCAAGBQJSlBcaAAoJEMDTa8Ir7ZwVOZoP/1u40BvJu2GkxHGmr8l/fbbb Af9odClkERbHeC9KDI6RGkRCc7aECvs/k8A/fAcclmdK/qnw4purUHxgTx6wvr4y wToQv0t6qJpuHSQ6jJ1zOknDIzTmWW8HVwbosUJ6WLu56fA1JxSEDNOYFcuXq9CS S/t3HIIvG74LNJfXLITicjY1mxNySUz29kkAXGtP3m5tA/4QJn4nTQQXSCpjfEU+ ZccfDQ1URYOEs4iuGBauyiCyABOioYRVA1VUHxCWqGi/hTlyvX+WOvhZ7nDyMYtS GKPC1cvZJ6RpOJ1VQnEAHauO7AlS6frjytJVrn2fNhA5pTbqc7Z02S4AA0VBBrzc +T7IR/U/QywsJYWN6Qpu52p4v4bgXLeSBYuQYPJhlsNONXc41gplTCXpgdVWzfQg YgiHwM8spk6yW8BJ1hHt/2mCRWcDtdyS2XgD9bWNib2thCGVFkHcN4m5vSQkp1O2 20cJvmJEqJqbZUHfA+OARW6TnzfDAqF8Ao1nmCITRNmLi0fNJl+oiMkRT5y2sSWP nJfAmYVz4p2nDntFu0i4e0hbPHUVymd00kSObfkl+4ls9n2iRK76idRZqpBcATvL VbYnCsuGNhRP+n4VcgdWtQtxUPFhZg3vfRLVXF1wvyiADLbRg3rnOnmuoyTg2mvE onu0NLQA7tjc5yzkepNl =3fG1 -----END PGP SIGNATURE----- --Signature=_Tue__26_Nov_2013_14_35_50_+1100_Y/PZPIYZJkUSC7iG--