Re: [PATCH v8 6/9] nvmet: add copy command support for bdev and file ns

From: kernel test robot <lkp@intel.com>
To: Anuj Gupta <anuj20.g@samsung.com>, Jens Axboe <axboe@kernel.dk>,
	Alasdair Kergon <agk@redhat.com>,
	Mike Snitzer <snitzer@kernel.org>,
	dm-devel@redhat.com, Keith Busch <kbusch@kernel.org>,
	Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
	James Smart <james.smart@broadcom.com>,
	Chaitanya Kulkarni <kch@nvidia.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Christian Brauner <brauner@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev, bvanassche@acm.org, hare@suse.de,
	ming.lei@redhat.com, damien.lemoal@opensource.wdc.com,
	anuj20.g@samsung.com, joshi.k@samsung.com,
	nitheshshetty@gmail.com, gost.dev@samsung.com,
	Nitesh Shetty <nj.shetty@samsung.com>,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v8 6/9] nvmet: add copy command support for bdev and file ns
Date: Wed, 29 Mar 2023 21:56:55 +0800	[thread overview]
Message-ID: <202303292148.Pbx4mDpS-lkp@intel.com> (raw)
In-Reply-To: <20230327084103.21601-7-anuj20.g@samsung.com>

Hi Anuj,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on linus/master v6.3-rc4 next-20230329]
[cannot apply to device-mapper-dm/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anuj-Gupta/block-Add-copy-offload-support-infrastructure/20230329-162018
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20230327084103.21601-7-anuj20.g%40samsung.com
patch subject: [PATCH v8 6/9] nvmet: add copy command support for bdev and file ns
config: arm64-randconfig-s041-20230329 (https://download.01.org/0day-ci/archive/20230329/202303292148.Pbx4mDpS-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/f846a8ac40882d9d42532e9e2b43560650ef8510
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Anuj-Gupta/block-Add-copy-offload-support-infrastructure/20230329-162018
        git checkout f846a8ac40882d9d42532e9e2b43560650ef8510
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/nvme/target/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303292148.Pbx4mDpS-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/nvme/target/io-cmd-bdev.c:55:27: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] val @@     got restricted __le16 [usertype] mssrl @@
   drivers/nvme/target/io-cmd-bdev.c:55:27: sparse:     expected unsigned int [usertype] val
   drivers/nvme/target/io-cmd-bdev.c:55:27: sparse:     got restricted __le16 [usertype] mssrl
>> drivers/nvme/target/io-cmd-bdev.c:55:27: sparse: sparse: cast from restricted __le16
>> drivers/nvme/target/io-cmd-bdev.c:55:27: sparse: sparse: cast from restricted __le16
>> drivers/nvme/target/io-cmd-bdev.c:55:27: sparse: sparse: cast from restricted __le16
>> drivers/nvme/target/io-cmd-bdev.c:55:27: sparse: sparse: cast from restricted __le16
   drivers/nvme/target/io-cmd-bdev.c:57:29: sparse: sparse: cast from restricted __le16
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] val @@     got restricted __le16 [usertype] mssrl @@
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse:     expected unsigned int [usertype] val
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse:     got restricted __le16 [usertype] mssrl
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse: sparse: cast from restricted __le16
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse: sparse: cast from restricted __le16
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse: sparse: cast from restricted __le16
   drivers/nvme/target/io-cmd-bdev.c:60:27: sparse: sparse: cast from restricted __le16

vim +55 drivers/nvme/target/io-cmd-bdev.c

    12	
    13	void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id)
    14	{
    15		/* Logical blocks per physical block, 0's based. */
    16		const __le16 lpp0b = to0based(bdev_physical_block_size(bdev) /
    17					      bdev_logical_block_size(bdev));
    18	
    19		/*
    20		 * For NVMe 1.2 and later, bit 1 indicates that the fields NAWUN,
    21		 * NAWUPF, and NACWU are defined for this namespace and should be
    22		 * used by the host for this namespace instead of the AWUN, AWUPF,
    23		 * and ACWU fields in the Identify Controller data structure. If
    24		 * any of these fields are zero that means that the corresponding
    25		 * field from the identify controller data structure should be used.
    26		 */
    27		id->nsfeat |= 1 << 1;
    28		id->nawun = lpp0b;
    29		id->nawupf = lpp0b;
    30		id->nacwu = lpp0b;
    31	
    32		/*
    33		 * Bit 4 indicates that the fields NPWG, NPWA, NPDG, NPDA, and
    34		 * NOWS are defined for this namespace and should be used by
    35		 * the host for I/O optimization.
    36		 */
    37		id->nsfeat |= 1 << 4;
    38		/* NPWG = Namespace Preferred Write Granularity. 0's based */
    39		id->npwg = lpp0b;
    40		/* NPWA = Namespace Preferred Write Alignment. 0's based */
    41		id->npwa = id->npwg;
    42		/* NPDG = Namespace Preferred Deallocate Granularity. 0's based */
    43		id->npdg = to0based(bdev_discard_granularity(bdev) /
    44				    bdev_logical_block_size(bdev));
    45		/* NPDG = Namespace Preferred Deallocate Alignment */
    46		id->npda = id->npdg;
    47		/* NOWS = Namespace Optimal Write Size */
    48		id->nows = to0based(bdev_io_opt(bdev) / bdev_logical_block_size(bdev));
    49	
    50		/*Copy limits*/
    51		if (bdev_max_copy_sectors(bdev)) {
    52			id->msrc = id->msrc;
    53			id->mssrl = cpu_to_le16((bdev_max_copy_sectors(bdev) <<
    54					SECTOR_SHIFT) / bdev_logical_block_size(bdev));
  > 55			id->mcl = cpu_to_le32(id->mssrl);
    56		} else {
    57			id->msrc = (u8)to0based(BIO_MAX_VECS - 1);
    58			id->mssrl = cpu_to_le16((BIO_MAX_VECS << PAGE_SHIFT) /
    59					bdev_logical_block_size(bdev));
    60			id->mcl = cpu_to_le32(id->mssrl);
    61		}
    62	}
    63	

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