16 void nvmet_file_ns_disable(struct nvmet_ns *ns)  in nvmet_file_ns_disable()  argument
18 	if (ns->file) {  in nvmet_file_ns_disable()
19 		if (ns->buffered_io)  in nvmet_file_ns_disable()
21 		mempool_destroy(ns->bvec_pool);  in nvmet_file_ns_disable()
22 		ns->bvec_pool = NULL;  in nvmet_file_ns_disable()
23 		kmem_cache_destroy(ns->bvec_cache);  in nvmet_file_ns_disable()
24 		ns->bvec_cache = NULL;  in nvmet_file_ns_disable()
25 		fput(ns->file);  in nvmet_file_ns_disable()
26 		ns->file = NULL;  in nvmet_file_ns_disable()
30 int nvmet_file_ns_enable(struct nvmet_ns *ns)  in nvmet_file_ns_enable()  argument
36 	if (!ns->buffered_io)  in nvmet_file_ns_enable()
39 	ns->file = filp_open(ns->device_path, flags, 0);  in nvmet_file_ns_enable()
40 	if (IS_ERR(ns->file)) {  in nvmet_file_ns_enable()
42 				ns->device_path, PTR_ERR(ns->file));  in nvmet_file_ns_enable()
43 		return PTR_ERR(ns->file);  in nvmet_file_ns_enable()
46 	ret = vfs_getattr(&ns->file->f_path,  in nvmet_file_ns_enable()
51 	ns->size = stat.size;  in nvmet_file_ns_enable()
52 	ns->blksize_shift = file_inode(ns->file)->i_blkbits;  in nvmet_file_ns_enable()
54 	ns->bvec_cache = kmem_cache_create("nvmet-bvec",  in nvmet_file_ns_enable()
57 	if (!ns->bvec_cache) {  in nvmet_file_ns_enable()
62 	ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,  in nvmet_file_ns_enable()
63 			mempool_free_slab, ns->bvec_cache);  in nvmet_file_ns_enable()
65 	if (!ns->bvec_pool) {  in nvmet_file_ns_enable()
72 	ns->size = 0;  in nvmet_file_ns_enable()
73 	ns->blksize_shift = 0;  in nvmet_file_ns_enable()
74 	nvmet_file_ns_disable(ns);  in nvmet_file_ns_enable()
97 		call_iter = req->ns->file->f_op->write_iter;  in nvmet_file_submit_bvec()
100 		call_iter = req->ns->file->f_op->read_iter;  in nvmet_file_submit_bvec()
107 	iocb->ki_filp = req->ns->file;  in nvmet_file_submit_bvec()
108 	iocb->ki_flags = ki_flags | iocb_flags(req->ns->file);  in nvmet_file_submit_bvec()
126 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
148 	pos = le64_to_cpu(req->cmd->rw.slba) << req->ns->blksize_shift;  in nvmet_file_execute_rw()
149 	if (unlikely(pos + req->data_len > req->ns->size)) {  in nvmet_file_execute_rw()
163 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
216 	if (vfs_fsync(req->ns->file, 1) < 0)  in nvmet_file_flush()
248 		offset = le64_to_cpu(range.slba) << req->ns->blksize_shift;  in nvmet_file_execute_discard()
250 		len <<= req->ns->blksize_shift;  in nvmet_file_execute_discard()
251 		if (offset + len > req->ns->size) {  in nvmet_file_execute_discard()
256 		if (vfs_fallocate(req->ns->file, mode, offset, len)) {  in nvmet_file_execute_discard()
297 	offset = le64_to_cpu(write_zeroes->slba) << req->ns->blksize_shift;  in nvmet_file_write_zeroes_work()
299 			req->ns->blksize_shift);  in nvmet_file_write_zeroes_work()
301 	if (unlikely(offset + len > req->ns->size)) {  in nvmet_file_write_zeroes_work()
306 	ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_write_zeroes_work()
323 		if (req->ns->buffered_io)  in nvmet_file_parse_io_cmd()
343 		pr_err("unhandled cmd for file ns %d on qid %d\n",  in nvmet_file_parse_io_cmd()