99 static ssize_t nvmet_file_submit_bvec(struct nvmet_req *req, loff_t pos,  in nvmet_file_submit_bvec()  argument
102 	struct kiocb *iocb = &req->f.iocb;  in nvmet_file_submit_bvec()
107 	if (req->cmd->rw.opcode == nvme_cmd_write) {  in nvmet_file_submit_bvec()
108 		if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA))  in nvmet_file_submit_bvec()
110 		call_iter = req->ns->file->f_op->write_iter;  in nvmet_file_submit_bvec()
113 		call_iter = req->ns->file->f_op->read_iter;  in nvmet_file_submit_bvec()
117 	iov_iter_bvec(&iter, rw, req->f.bvec, nr_segs, count);  in nvmet_file_submit_bvec()
120 	iocb->ki_filp = req->ns->file;  in nvmet_file_submit_bvec()
121 	iocb->ki_flags = ki_flags | iocb_flags(req->ns->file);  in nvmet_file_submit_bvec()
128 	struct nvmet_req *req = container_of(iocb, struct nvmet_req, f.iocb);  in nvmet_file_io_done()  local
131 	if (req->f.bvec != req->inline_bvec) {  in nvmet_file_io_done()
132 		if (likely(req->f.mpool_alloc == false))  in nvmet_file_io_done()
133 			kfree(req->f.bvec);  in nvmet_file_io_done()
135 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
138 	if (unlikely(ret != req->transfer_len))  in nvmet_file_io_done()
139 		status = errno_to_nvme_status(req, ret);  in nvmet_file_io_done()
140 	nvmet_req_complete(req, status);  in nvmet_file_io_done()
143 static bool nvmet_file_execute_io(struct nvmet_req *req, int ki_flags)  in nvmet_file_execute_io()  argument
145 	ssize_t nr_bvec = req->sg_cnt;  in nvmet_file_execute_io()
154 	if (req->f.mpool_alloc && nr_bvec > NVMET_MAX_MPOOL_BVEC)  in nvmet_file_execute_io()
157 	pos = le64_to_cpu(req->cmd->rw.slba) << req->ns->blksize_shift;  in nvmet_file_execute_io()
158 	if (unlikely(pos + req->transfer_len > req->ns->size)) {  in nvmet_file_execute_io()
159 		nvmet_req_complete(req, errno_to_nvme_status(req, -ENOSPC));  in nvmet_file_execute_io()
163 	memset(&req->f.iocb, 0, sizeof(struct kiocb));  in nvmet_file_execute_io()
164 	for_each_sg(req->sg, sg, req->sg_cnt, i) {  in nvmet_file_execute_io()
165 		nvmet_file_init_bvec(&req->f.bvec[bv_cnt], sg);  in nvmet_file_execute_io()
166 		len += req->f.bvec[bv_cnt].bv_len;  in nvmet_file_execute_io()
167 		total_len += req->f.bvec[bv_cnt].bv_len;  in nvmet_file_execute_io()
174 			ret = nvmet_file_submit_bvec(req, pos, bv_cnt, len, 0);  in nvmet_file_execute_io()
185 	if (WARN_ON_ONCE(total_len != req->transfer_len)) {  in nvmet_file_execute_io()
200 		req->f.iocb.ki_complete = nvmet_file_io_done;  in nvmet_file_execute_io()
202 	ret = nvmet_file_submit_bvec(req, pos, bv_cnt, total_len, ki_flags);  in nvmet_file_execute_io()
223 	nvmet_file_io_done(&req->f.iocb, ret, 0);  in nvmet_file_execute_io()
229 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_buffered_io_work()  local
231 	nvmet_file_execute_io(req, 0);  in nvmet_file_buffered_io_work()
234 static void nvmet_file_submit_buffered_io(struct nvmet_req *req)  in nvmet_file_submit_buffered_io()  argument
236 	INIT_WORK(&req->f.work, nvmet_file_buffered_io_work);  in nvmet_file_submit_buffered_io()
237 	queue_work(buffered_io_wq, &req->f.work);  in nvmet_file_submit_buffered_io()
240 static void nvmet_file_execute_rw(struct nvmet_req *req)  in nvmet_file_execute_rw()  argument
242 	ssize_t nr_bvec = req->sg_cnt;  in nvmet_file_execute_rw()
244 	if (!nvmet_check_transfer_len(req, nvmet_rw_data_len(req)))  in nvmet_file_execute_rw()
247 	if (!req->sg_cnt || !nr_bvec) {  in nvmet_file_execute_rw()
248 		nvmet_req_complete(req, 0);  in nvmet_file_execute_rw()
253 		req->f.bvec = kmalloc_array(nr_bvec, sizeof(struct bio_vec),  in nvmet_file_execute_rw()
256 		req->f.bvec = req->inline_bvec;  in nvmet_file_execute_rw()
258 	if (unlikely(!req->f.bvec)) {  in nvmet_file_execute_rw()
260 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
261 		req->f.mpool_alloc = true;  in nvmet_file_execute_rw()
263 		req->f.mpool_alloc = false;  in nvmet_file_execute_rw()
265 	if (req->ns->buffered_io) {  in nvmet_file_execute_rw()
266 		if (likely(!req->f.mpool_alloc) &&  in nvmet_file_execute_rw()
267 				nvmet_file_execute_io(req, IOCB_NOWAIT))  in nvmet_file_execute_rw()
269 		nvmet_file_submit_buffered_io(req);  in nvmet_file_execute_rw()
271 		nvmet_file_execute_io(req, 0);  in nvmet_file_execute_rw()
274 u16 nvmet_file_flush(struct nvmet_req *req)  in nvmet_file_flush()  argument
276 	return errno_to_nvme_status(req, vfs_fsync(req->ns->file, 1));  in nvmet_file_flush()
281 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_flush_work()  local
283 	nvmet_req_complete(req, nvmet_file_flush(req));  in nvmet_file_flush_work()
286 static void nvmet_file_execute_flush(struct nvmet_req *req)  in nvmet_file_execute_flush()  argument
288 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_flush()
290 	INIT_WORK(&req->f.work, nvmet_file_flush_work);  in nvmet_file_execute_flush()
291 	schedule_work(&req->f.work);  in nvmet_file_execute_flush()
294 static void nvmet_file_execute_discard(struct nvmet_req *req)  in nvmet_file_execute_discard()  argument
303 	for (i = 0; i <= le32_to_cpu(req->cmd->dsm.nr); i++) {  in nvmet_file_execute_discard()
304 		status = nvmet_copy_from_sgl(req, i * sizeof(range), &range,  in nvmet_file_execute_discard()
309 		offset = le64_to_cpu(range.slba) << req->ns->blksize_shift;  in nvmet_file_execute_discard()
311 		len <<= req->ns->blksize_shift;  in nvmet_file_execute_discard()
312 		if (offset + len > req->ns->size) {  in nvmet_file_execute_discard()
313 			req->error_slba = le64_to_cpu(range.slba);  in nvmet_file_execute_discard()
314 			status = errno_to_nvme_status(req, -ENOSPC);  in nvmet_file_execute_discard()
318 		ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_execute_discard()
320 			req->error_slba = le64_to_cpu(range.slba);  in nvmet_file_execute_discard()
321 			status = errno_to_nvme_status(req, ret);  in nvmet_file_execute_discard()
326 	nvmet_req_complete(req, status);  in nvmet_file_execute_discard()
331 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_dsm_work()  local
333 	switch (le32_to_cpu(req->cmd->dsm.attributes)) {  in nvmet_file_dsm_work()
335 		nvmet_file_execute_discard(req);  in nvmet_file_dsm_work()
341 		nvmet_req_complete(req, 0);  in nvmet_file_dsm_work()
346 static void nvmet_file_execute_dsm(struct nvmet_req *req)  in nvmet_file_execute_dsm()  argument
348 	if (!nvmet_check_data_len_lte(req, nvmet_dsm_len(req)))  in nvmet_file_execute_dsm()
350 	INIT_WORK(&req->f.work, nvmet_file_dsm_work);  in nvmet_file_execute_dsm()
351 	schedule_work(&req->f.work);  in nvmet_file_execute_dsm()
356 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_write_zeroes_work()  local
357 	struct nvme_write_zeroes_cmd *write_zeroes = &req->cmd->write_zeroes;  in nvmet_file_write_zeroes_work()
363 	offset = le64_to_cpu(write_zeroes->slba) << req->ns->blksize_shift;  in nvmet_file_write_zeroes_work()
365 			req->ns->blksize_shift);  in nvmet_file_write_zeroes_work()
367 	if (unlikely(offset + len > req->ns->size)) {  in nvmet_file_write_zeroes_work()
368 		nvmet_req_complete(req, errno_to_nvme_status(req, -ENOSPC));  in nvmet_file_write_zeroes_work()
372 	ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_write_zeroes_work()
373 	nvmet_req_complete(req, ret < 0 ? errno_to_nvme_status(req, ret) : 0);  in nvmet_file_write_zeroes_work()
376 static void nvmet_file_execute_write_zeroes(struct nvmet_req *req)  in nvmet_file_execute_write_zeroes()  argument
378 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_write_zeroes()
380 	INIT_WORK(&req->f.work, nvmet_file_write_zeroes_work);  in nvmet_file_execute_write_zeroes()
381 	schedule_work(&req->f.work);  in nvmet_file_execute_write_zeroes()
384 u16 nvmet_file_parse_io_cmd(struct nvmet_req *req)  in nvmet_file_parse_io_cmd()  argument
386 	struct nvme_command *cmd = req->cmd;  in nvmet_file_parse_io_cmd()
391 		req->execute = nvmet_file_execute_rw;  in nvmet_file_parse_io_cmd()
394 		req->execute = nvmet_file_execute_flush;  in nvmet_file_parse_io_cmd()
397 		req->execute = nvmet_file_execute_dsm;  in nvmet_file_parse_io_cmd()
400 		req->execute = nvmet_file_execute_write_zeroes;  in nvmet_file_parse_io_cmd()
404 				cmd->common.opcode, req->sq->qid);  in nvmet_file_parse_io_cmd()
405 		req->error_loc = offsetof(struct nvme_common_command, opcode);  in nvmet_file_parse_io_cmd()