16 void nvmet_file_ns_revalidate(struct nvmet_ns *ns)  in nvmet_file_ns_revalidate()  argument
18 	ns->size = i_size_read(ns->file->f_mapping->host);  in nvmet_file_ns_revalidate()
21 void nvmet_file_ns_disable(struct nvmet_ns *ns)  in nvmet_file_ns_disable()  argument
23 	if (ns->file) {  in nvmet_file_ns_disable()
24 		if (ns->buffered_io)  in nvmet_file_ns_disable()
26 		mempool_destroy(ns->bvec_pool);  in nvmet_file_ns_disable()
27 		ns->bvec_pool = NULL;  in nvmet_file_ns_disable()
28 		fput(ns->file);  in nvmet_file_ns_disable()
29 		ns->file = NULL;  in nvmet_file_ns_disable()
33 int nvmet_file_ns_enable(struct nvmet_ns *ns)  in nvmet_file_ns_enable()  argument
36 	int ret = 0;  in nvmet_file_ns_enable()
38 	if (!ns->buffered_io)  in nvmet_file_ns_enable()
41 	ns->file = filp_open(ns->device_path, flags, 0);  in nvmet_file_ns_enable()
42 	if (IS_ERR(ns->file)) {  in nvmet_file_ns_enable()
43 		ret = PTR_ERR(ns->file);  in nvmet_file_ns_enable()
45 			ns->device_path, ret);  in nvmet_file_ns_enable()
46 		ns->file = NULL;  in nvmet_file_ns_enable()
50 	nvmet_file_ns_revalidate(ns);  in nvmet_file_ns_enable()
56 	ns->blksize_shift = min_t(u8,  in nvmet_file_ns_enable()
57 			file_inode(ns->file)->i_blkbits, 12);  in nvmet_file_ns_enable()
59 	ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,  in nvmet_file_ns_enable()
62 	if (!ns->bvec_pool) {  in nvmet_file_ns_enable()
69 	fput(ns->file);  in nvmet_file_ns_enable()
70 	ns->file = NULL;  in nvmet_file_ns_enable()
71 	ns->size = 0;  in nvmet_file_ns_enable()
72 	ns->blksize_shift = 0;  in nvmet_file_ns_enable()
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()
97 	iocb->ki_filp = req->ns->file;  in nvmet_file_submit_bvec()
112 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
123 	unsigned long bv_cnt = 0;  in nvmet_file_execute_io()
125 	size_t len = 0, total_len = 0;  in nvmet_file_execute_io()
126 	ssize_t ret = 0;  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()
140 	memset(&req->f.iocb, 0, sizeof(struct kiocb));  in nvmet_file_execute_io()
148 		WARN_ON_ONCE((nr_bvec - 1) < 0);  in nvmet_file_execute_io()
151 		    (nr_bvec - 1 == 0 || bv_cnt == NVMET_MAX_MPOOL_BVEC)) {  in nvmet_file_execute_io()
152 			ret = nvmet_file_submit_bvec(req, pos, bv_cnt, len, 0);  in nvmet_file_execute_io()
153 			if (ret < 0)  in nvmet_file_execute_io()
157 			bv_cnt = 0;  in nvmet_file_execute_io()
158 			len = 0;  in nvmet_file_execute_io()
209 	nvmet_file_execute_io(req, 0);  in nvmet_file_buffered_io_work()
226 		nvmet_req_complete(req, 0);  in nvmet_file_execute_rw()
238 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
243 	if (req->ns->buffered_io) {  in nvmet_file_execute_rw()
245 		    (req->ns->file->f_mode & FMODE_NOWAIT) &&  in nvmet_file_execute_rw()
250 		nvmet_file_execute_io(req, 0);  in nvmet_file_execute_rw()
255 	return errno_to_nvme_status(req, vfs_fsync(req->ns->file, 1));  in nvmet_file_flush()
267 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_flush()
278 	u16 status = 0;  in nvmet_file_execute_discard()
282 	for (i = 0; i <= le32_to_cpu(req->cmd->dsm.nr); i++) {  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()
297 		ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_execute_discard()
320 		nvmet_req_complete(req, 0);  in nvmet_file_dsm_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()
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()
357 	if (!nvmet_check_transfer_len(req, 0))  in nvmet_file_execute_write_zeroes()
369 		return 0;  in nvmet_file_parse_io_cmd()
372 		return 0;  in nvmet_file_parse_io_cmd()
375 		return 0;  in nvmet_file_parse_io_cmd()
378 		return 0;  in nvmet_file_parse_io_cmd()