16 int nvmet_file_ns_revalidate(struct nvmet_ns *ns)  in nvmet_file_ns_revalidate()  argument
21 	ret = vfs_getattr(&ns->file->f_path, &stat, STATX_SIZE,  in nvmet_file_ns_revalidate()
24 		ns->size = stat.size;  in nvmet_file_ns_revalidate()
28 void nvmet_file_ns_disable(struct nvmet_ns *ns)  in nvmet_file_ns_disable()  argument
30 	if (ns->file) {  in nvmet_file_ns_disable()
31 		if (ns->buffered_io)  in nvmet_file_ns_disable()
33 		mempool_destroy(ns->bvec_pool);  in nvmet_file_ns_disable()
34 		ns->bvec_pool = NULL;  in nvmet_file_ns_disable()
35 		kmem_cache_destroy(ns->bvec_cache);  in nvmet_file_ns_disable()
36 		ns->bvec_cache = NULL;  in nvmet_file_ns_disable()
37 		fput(ns->file);  in nvmet_file_ns_disable()
38 		ns->file = NULL;  in nvmet_file_ns_disable()
42 int nvmet_file_ns_enable(struct nvmet_ns *ns)  in nvmet_file_ns_enable()  argument
47 	if (!ns->buffered_io)  in nvmet_file_ns_enable()
50 	ns->file = filp_open(ns->device_path, flags, 0);  in nvmet_file_ns_enable()
51 	if (IS_ERR(ns->file)) {  in nvmet_file_ns_enable()
53 				ns->device_path, PTR_ERR(ns->file));  in nvmet_file_ns_enable()
54 		return PTR_ERR(ns->file);  in nvmet_file_ns_enable()
57 	ret = nvmet_file_ns_revalidate(ns);  in nvmet_file_ns_enable()
65 	ns->blksize_shift = min_t(u8,  in nvmet_file_ns_enable()
66 			file_inode(ns->file)->i_blkbits, 12);  in nvmet_file_ns_enable()
68 	ns->bvec_cache = kmem_cache_create("nvmet-bvec",  in nvmet_file_ns_enable()
71 	if (!ns->bvec_cache) {  in nvmet_file_ns_enable()
76 	ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,  in nvmet_file_ns_enable()
77 			mempool_free_slab, ns->bvec_cache);  in nvmet_file_ns_enable()
79 	if (!ns->bvec_pool) {  in nvmet_file_ns_enable()
86 	ns->size = 0;  in nvmet_file_ns_enable()
87 	ns->blksize_shift = 0;  in nvmet_file_ns_enable()
88 	nvmet_file_ns_disable(ns);  in nvmet_file_ns_enable()
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()
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()
135 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
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()
260 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
265 	if (req->ns->buffered_io) {  in nvmet_file_execute_rw()
276 	return errno_to_nvme_status(req, vfs_fsync(req->ns->file, 1));  in nvmet_file_flush()
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()
318 		ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_execute_discard()
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()
372 	ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_write_zeroes_work()
403 		pr_err("unhandled cmd for file ns %d on qid %d\n",  in nvmet_file_parse_io_cmd()