76 static ssize_t nvmet_file_submit_bvec(struct nvmet_req *req, loff_t pos,  in nvmet_file_submit_bvec()  argument
79 	struct kiocb *iocb = &req->f.iocb;  in nvmet_file_submit_bvec()
84 	if (req->cmd->rw.opcode == nvme_cmd_write) {  in nvmet_file_submit_bvec()
85 		if (req->cmd->rw.control & cpu_to_le16(NVME_RW_FUA))  in nvmet_file_submit_bvec()
87 		call_iter = req->ns->file->f_op->write_iter;  in nvmet_file_submit_bvec()
90 		call_iter = req->ns->file->f_op->read_iter;  in nvmet_file_submit_bvec()
94 	iov_iter_bvec(&iter, rw, req->f.bvec, nr_segs, count);  in nvmet_file_submit_bvec()
97 	iocb->ki_filp = req->ns->file;  in nvmet_file_submit_bvec()
105 	struct nvmet_req *req = container_of(iocb, struct nvmet_req, f.iocb);  in nvmet_file_io_done()  local
108 	if (req->f.bvec != req->inline_bvec) {  in nvmet_file_io_done()
109 		if (likely(req->f.mpool_alloc == false))  in nvmet_file_io_done()
110 			kfree(req->f.bvec);  in nvmet_file_io_done()
112 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
115 	if (unlikely(ret != req->transfer_len))  in nvmet_file_io_done()
116 		status = errno_to_nvme_status(req, ret);  in nvmet_file_io_done()
117 	nvmet_req_complete(req, status);  in nvmet_file_io_done()
120 static bool nvmet_file_execute_io(struct nvmet_req *req, int ki_flags)  in nvmet_file_execute_io()  argument
122 	ssize_t nr_bvec = req->sg_cnt;  in nvmet_file_execute_io()
131 	if (req->f.mpool_alloc && nr_bvec > NVMET_MAX_MPOOL_BVEC)  in nvmet_file_execute_io()
134 	pos = le64_to_cpu(req->cmd->rw.slba) << req->ns->blksize_shift;  in nvmet_file_execute_io()
135 	if (unlikely(pos + req->transfer_len > req->ns->size)) {  in nvmet_file_execute_io()
136 		nvmet_req_complete(req, errno_to_nvme_status(req, -ENOSPC));  in nvmet_file_execute_io()
140 	memset(&req->f.iocb, 0, sizeof(struct kiocb));  in nvmet_file_execute_io()
141 	for_each_sg(req->sg, sg, req->sg_cnt, i) {  in nvmet_file_execute_io()
142 		bvec_set_page(&req->f.bvec[bv_cnt], sg_page(sg), sg->length,  in nvmet_file_execute_io()
144 		len += req->f.bvec[bv_cnt].bv_len;  in nvmet_file_execute_io()
145 		total_len += req->f.bvec[bv_cnt].bv_len;  in nvmet_file_execute_io()
152 			ret = nvmet_file_submit_bvec(req, pos, bv_cnt, len, 0);  in nvmet_file_execute_io()
163 	if (WARN_ON_ONCE(total_len != req->transfer_len)) {  in nvmet_file_execute_io()
178 		req->f.iocb.ki_complete = nvmet_file_io_done;  in nvmet_file_execute_io()
180 	ret = nvmet_file_submit_bvec(req, pos, bv_cnt, total_len, ki_flags);  in nvmet_file_execute_io()
201 	nvmet_file_io_done(&req->f.iocb, ret);  in nvmet_file_execute_io()
207 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_buffered_io_work()  local
209 	nvmet_file_execute_io(req, 0);  in nvmet_file_buffered_io_work()
212 static void nvmet_file_submit_buffered_io(struct nvmet_req *req)  in nvmet_file_submit_buffered_io()  argument
214 	INIT_WORK(&req->f.work, nvmet_file_buffered_io_work);  in nvmet_file_submit_buffered_io()
215 	queue_work(buffered_io_wq, &req->f.work);  in nvmet_file_submit_buffered_io()
218 static void nvmet_file_execute_rw(struct nvmet_req *req)  in nvmet_file_execute_rw()  argument
220 	ssize_t nr_bvec = req->sg_cnt;  in nvmet_file_execute_rw()
222 	if (!nvmet_check_transfer_len(req, nvmet_rw_data_len(req)))  in nvmet_file_execute_rw()
225 	if (!req->sg_cnt || !nr_bvec) {  in nvmet_file_execute_rw()
226 		nvmet_req_complete(req, 0);  in nvmet_file_execute_rw()
231 		req->f.bvec = kmalloc_array(nr_bvec, sizeof(struct bio_vec),  in nvmet_file_execute_rw()
234 		req->f.bvec = req->inline_bvec;  in nvmet_file_execute_rw()
236 	if (unlikely(!req->f.bvec)) {  in nvmet_file_execute_rw()
238 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
239 		req->f.mpool_alloc = true;  in nvmet_file_execute_rw()
241 		req->f.mpool_alloc = false;  in nvmet_file_execute_rw()
243 	if (req->ns->buffered_io) {  in nvmet_file_execute_rw()
244 		if (likely(!req->f.mpool_alloc) &&  in nvmet_file_execute_rw()
245 		    (req->ns->file->f_mode & FMODE_NOWAIT) &&  in nvmet_file_execute_rw()
246 		    nvmet_file_execute_io(req, IOCB_NOWAIT))  in nvmet_file_execute_rw()
248 		nvmet_file_submit_buffered_io(req);  in nvmet_file_execute_rw()
250 		nvmet_file_execute_io(req, 0);  in nvmet_file_execute_rw()
253 u16 nvmet_file_flush(struct nvmet_req *req)  in nvmet_file_flush()  argument
255 	return errno_to_nvme_status(req, vfs_fsync(req->ns->file, 1));  in nvmet_file_flush()
260 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_flush_work()  local
262 	nvmet_req_complete(req, nvmet_file_flush(req));  in nvmet_file_flush_work()
265 static void nvmet_file_execute_flush(struct nvmet_req *req)  in nvmet_file_execute_flush()  argument
267 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_flush()
269 	INIT_WORK(&req->f.work, nvmet_file_flush_work);  in nvmet_file_execute_flush()
270 	queue_work(nvmet_wq, &req->f.work);  in nvmet_file_execute_flush()
273 static void nvmet_file_execute_discard(struct nvmet_req *req)  in nvmet_file_execute_discard()  argument
282 	for (i = 0; i <= le32_to_cpu(req->cmd->dsm.nr); i++) {  in nvmet_file_execute_discard()
283 		status = nvmet_copy_from_sgl(req, i * sizeof(range), &range,  in nvmet_file_execute_discard()
288 		offset = le64_to_cpu(range.slba) << req->ns->blksize_shift;  in nvmet_file_execute_discard()
290 		len <<= req->ns->blksize_shift;  in nvmet_file_execute_discard()
291 		if (offset + len > req->ns->size) {  in nvmet_file_execute_discard()
292 			req->error_slba = le64_to_cpu(range.slba);  in nvmet_file_execute_discard()
293 			status = errno_to_nvme_status(req, -ENOSPC);  in nvmet_file_execute_discard()
297 		ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_execute_discard()
299 			req->error_slba = le64_to_cpu(range.slba);  in nvmet_file_execute_discard()
300 			status = errno_to_nvme_status(req, ret);  in nvmet_file_execute_discard()
305 	nvmet_req_complete(req, status);  in nvmet_file_execute_discard()
310 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_dsm_work()  local
312 	switch (le32_to_cpu(req->cmd->dsm.attributes)) {  in nvmet_file_dsm_work()
314 		nvmet_file_execute_discard(req);  in nvmet_file_dsm_work()
320 		nvmet_req_complete(req, 0);  in nvmet_file_dsm_work()
325 static void nvmet_file_execute_dsm(struct nvmet_req *req)  in nvmet_file_execute_dsm()  argument
327 	if (!nvmet_check_data_len_lte(req, nvmet_dsm_len(req)))  in nvmet_file_execute_dsm()
329 	INIT_WORK(&req->f.work, nvmet_file_dsm_work);  in nvmet_file_execute_dsm()
330 	queue_work(nvmet_wq, &req->f.work);  in nvmet_file_execute_dsm()
335 	struct nvmet_req *req = container_of(w, struct nvmet_req, f.work);  in nvmet_file_write_zeroes_work()  local
336 	struct nvme_write_zeroes_cmd *write_zeroes = &req->cmd->write_zeroes;  in nvmet_file_write_zeroes_work()
342 	offset = le64_to_cpu(write_zeroes->slba) << req->ns->blksize_shift;  in nvmet_file_write_zeroes_work()
344 			req->ns->blksize_shift);  in nvmet_file_write_zeroes_work()
346 	if (unlikely(offset + len > req->ns->size)) {  in nvmet_file_write_zeroes_work()
347 		nvmet_req_complete(req, errno_to_nvme_status(req, -ENOSPC));  in nvmet_file_write_zeroes_work()
351 	ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_write_zeroes_work()
352 	nvmet_req_complete(req, ret < 0 ? errno_to_nvme_status(req, ret) : 0);  in nvmet_file_write_zeroes_work()
355 static void nvmet_file_execute_write_zeroes(struct nvmet_req *req)  in nvmet_file_execute_write_zeroes()  argument
357 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_write_zeroes()
359 	INIT_WORK(&req->f.work, nvmet_file_write_zeroes_work);  in nvmet_file_execute_write_zeroes()
360 	queue_work(nvmet_wq, &req->f.work);  in nvmet_file_execute_write_zeroes()
363 u16 nvmet_file_parse_io_cmd(struct nvmet_req *req)  in nvmet_file_parse_io_cmd()  argument
365 	switch (req->cmd->common.opcode) {  in nvmet_file_parse_io_cmd()
368 		req->execute = nvmet_file_execute_rw;  in nvmet_file_parse_io_cmd()
371 		req->execute = nvmet_file_execute_flush;  in nvmet_file_parse_io_cmd()
374 		req->execute = nvmet_file_execute_dsm;  in nvmet_file_parse_io_cmd()
377 		req->execute = nvmet_file_execute_write_zeroes;  in nvmet_file_parse_io_cmd()
380 		return nvmet_report_invalid_opcode(req);  in nvmet_file_parse_io_cmd()