Hi Nitesh,
kernel test robot noticed the following build warnings:
[auto build test WARNING on next-20230418]
[cannot apply to axboe-block/for-next device-mapper-dm/for-next linus/master v6.3-rc7 v6.3-rc6 v6.3-rc5 v6.3-rc7]
[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/Nitesh-Shetty/block-Add-copy-offload-support-infrastructure/20230419-204352
patch link: https://lore.kernel.org/r/20230419114320.13674-7-nj.shetty%40samsung.com
patch subject: [PATCH v10 6/9] nvmet: add copy command support for bdev and file ns
config: m68k-randconfig-s032-20230416 (https://download.01.org/0day-ci/archive/20230420/202304200240.fsLkpzvk-lkp@intel.com/config)
compiler: m68k-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/420b04f7ba9a54898d62c1d60905f8cf952afde2
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Nitesh-Shetty/block-Add-copy-offload-support-infrastructure/20230419-204352
git checkout 420b04f7ba9a54898d62c1d60905f8cf952afde2
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k 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/202304200240.fsLkpzvk-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
@@ -433,8 +433,7 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req)
id->nn = cpu_to_le32(NVMET_MAX_NAMESPACES);
id->mnan = cpu_to_le32(NVMET_MAX_NAMESPACES);
id->oncs = cpu_to_le16(NVME_CTRL_ONCS_DSM |
- NVME_CTRL_ONCS_WRITE_ZEROES);
-
+ NVME_CTRL_ONCS_WRITE_ZEROES | NVME_CTRL_ONCS_COPY);
/* XXX: don't report vwc if the underlying device is write through */
id->vwc = NVME_CTRL_VWC_PRESENT;
@@ -536,6 +535,12 @@ static void nvmet_execute_identify_ns(struct nvmet_req *req)
if (req->ns->bdev)
nvmet_bdev_set_limits(req->ns->bdev, id);
+ else {
+ id->msrc = (u8)to0based(BIO_MAX_VECS - 1);
+ id->mssrl = cpu_to_le16(BIO_MAX_VECS <<
+ (PAGE_SHIFT - SECTOR_SHIFT));
+ id->mcl = cpu_to_le32(le16_to_cpu(id->mssrl));
+ }
/*
* We just provide a single LBA format that matches what the
@@ -46,6 +46,19 @@ void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id)
id->npda = id->npdg;
/* NOWS = Namespace Optimal Write Size */
id->nows = to0based(bdev_io_opt(bdev) / bdev_logical_block_size(bdev));
+
+ /*Copy limits*/
+ if (bdev_max_copy_sectors(bdev)) {
+ id->msrc = id->msrc;
+ id->mssrl = cpu_to_le16((bdev_max_copy_sectors(bdev) <<
+ SECTOR_SHIFT) / bdev_logical_block_size(bdev));
+ id->mcl = cpu_to_le32(id->mssrl);
+ } else {
+ id->msrc = (u8)to0based(BIO_MAX_VECS - 1);
+ id->mssrl = cpu_to_le16((BIO_MAX_VECS << PAGE_SHIFT) /
+ bdev_logical_block_size(bdev));
+ id->mcl = cpu_to_le32(id->mssrl);
+ }
}
void nvmet_bdev_ns_disable(struct nvmet_ns *ns)
@@ -184,6 +197,19 @@ static void nvmet_bio_done(struct bio *bio)
nvmet_req_bio_put(req, bio);
}
+static void nvmet_bdev_copy_end_io(void *private, int comp_len)
+{
+ struct nvmet_req *req = (struct nvmet_req *)private;
+
+ if (comp_len == req->copy_len) {
+ req->cqe->result.u32 = cpu_to_le32(1);
+ nvmet_req_complete(req, errno_to_nvme_status(req, 0));
+ } else {
+ req->cqe->result.u32 = cpu_to_le32(0);
+ nvmet_req_complete(req, blk_to_nvme_status(req, BLK_STS_IOERR));
+ }
+}
+
#ifdef CONFIG_BLK_DEV_INTEGRITY
static int nvmet_bdev_alloc_bip(struct nvmet_req *req, struct bio *bio,
struct sg_mapping_iter *miter)
@@ -450,6 +476,34 @@ static void nvmet_bdev_execute_write_zeroes(struct nvmet_req *req)
}
}
+/* At present we handle only one range entry */
+static void nvmet_bdev_execute_copy(struct nvmet_req *req)
+{
+ struct nvme_copy_range range;
+ struct nvme_command *cmnd = req->cmd;
+ int ret;
+
+
+ ret = nvmet_copy_from_sgl(req, 0, &range, sizeof(range));
+ if (ret)
+ goto out;
+
+ ret = blkdev_issue_copy(req->ns->bdev,
+ le64_to_cpu(cmnd->copy.sdlba) << req->ns->blksize_shift,
+ req->ns->bdev,
+ le64_to_cpu(range.slba) << req->ns->blksize_shift,
+ (le16_to_cpu(range.nlb) + 1) << req->ns->blksize_shift,
+ nvmet_bdev_copy_end_io, (void *)req, GFP_KERNEL);
+ if (ret) {
+ req->cqe->result.u32 = cpu_to_le32(0);
+ nvmet_req_complete(req, blk_to_nvme_status(req, BLK_STS_IOERR));
+ }
+
+ return;
+out:
+ nvmet_req_complete(req, errno_to_nvme_status(req, ret));
+}
+
u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req)
{
switch (req->cmd->common.opcode) {
@@ -468,6 +522,10 @@ u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req)
case nvme_cmd_write_zeroes:
req->execute = nvmet_bdev_execute_write_zeroes;
return 0;
+ case nvme_cmd_copy:
+ req->execute = nvmet_bdev_execute_copy;
+ return 0;
+
default:
return nvmet_report_invalid_opcode(req);
}
@@ -322,6 +322,49 @@ static void nvmet_file_dsm_work(struct work_struct *w)
}
}
+static void nvmet_file_copy_work(struct work_struct *w)
+{
+ struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);
+ int nr_range;
+ loff_t pos;
+ struct nvme_command *cmnd = req->cmd;
+ int ret = 0, len = 0, src, id;
+
+ nr_range = cmnd->copy.nr_range + 1;
+ pos = le64_to_cpu(req->cmd->copy.sdlba) << req->ns->blksize_shift;
+ if (unlikely(pos + req->transfer_len > req->ns->size)) {
+ nvmet_req_complete(req, errno_to_nvme_status(req, -ENOSPC));
+ return;
+ }
+
+ for (id = 0 ; id < nr_range; id++) {
+ struct nvme_copy_range range;
+
+ ret = nvmet_copy_from_sgl(req, id * sizeof(range), &range,
+ sizeof(range));
+ if (ret)
+ goto out;
+
+ len = (le16_to_cpu(range.nlb) + 1) << (req->ns->blksize_shift);
+ src = (le64_to_cpu(range.slba) << (req->ns->blksize_shift));
+ ret = vfs_copy_file_range(req->ns->file, src, req->ns->file,
+ pos, len, 0);
+out:
+ if (ret != len) {
+ pos += ret;
+ req->cqe->result.u32 = cpu_to_le32(id);
+ nvmet_req_complete(req, ret < 0 ?
+ errno_to_nvme_status(req, ret) :
+ errno_to_nvme_status(req, -EIO));
+ return;
+
+ } else
+ pos += len;
+ }
+
+ nvmet_req_complete(req, 0);
+
+}
static void nvmet_file_execute_dsm(struct nvmet_req *req)
{
if (!nvmet_check_data_len_lte(req, nvmet_dsm_len(req)))
@@ -330,6 +373,12 @@ static void nvmet_file_execute_dsm(struct nvmet_req *req)
queue_work(nvmet_wq, &req->f.work);
}
+static void nvmet_file_execute_copy(struct nvmet_req *req)
+{
+ INIT_WORK(&req->f.work, nvmet_file_copy_work);
+ queue_work(nvmet_wq, &req->f.work);
+}
+
static void nvmet_file_write_zeroes_work(struct work_struct *w)
{
struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);
@@ -376,6 +425,9 @@ u16 nvmet_file_parse_io_cmd(struct nvmet_req *req)
case nvme_cmd_write_zeroes:
req->execute = nvmet_file_execute_write_zeroes;
return 0;
+ case nvme_cmd_copy:
+ req->execute = nvmet_file_execute_copy;
+ return 0;
default:
return nvmet_report_invalid_opcode(req);
}
@@ -146,6 +146,12 @@ static blk_status_t nvme_loop_queue_rq(struct blk_mq_hw_ctx *hctx,
return ret;
nvme_start_request(req);
+ if (unlikely((req->cmd_flags & REQ_COPY) &&
+ (req_op(req) == REQ_OP_READ))) {
+ blk_mq_set_request_complete(req);
+ blk_mq_end_request(req, BLK_STS_OK);
+ return BLK_STS_OK;
+ }
iod->cmd.common.flags |= NVME_CMD_SGL_METABUF;
iod->req.port = queue->ctrl->port;
if (!nvmet_req_init(&iod->req, &queue->nvme_cq,
@@ -393,6 +393,7 @@ struct nvmet_req {
struct device *p2p_client;
u16 error_loc;
u64 error_slba;
+ size_t copy_len;
};
#define NVMET_MAX_MPOOL_BVEC 16