17 void nvmet_file_ns_revalidate(struct nvmet_ns *ns)  in nvmet_file_ns_revalidate()  argument
19 	ns->size = i_size_read(ns->file->f_mapping->host);  in nvmet_file_ns_revalidate()
22 void nvmet_file_ns_disable(struct nvmet_ns *ns)  in nvmet_file_ns_disable()  argument
24 	if (ns->file) {  in nvmet_file_ns_disable()
25 		if (ns->buffered_io)  in nvmet_file_ns_disable()
27 		mempool_destroy(ns->bvec_pool);  in nvmet_file_ns_disable()
28 		ns->bvec_pool = NULL;  in nvmet_file_ns_disable()
29 		kmem_cache_destroy(ns->bvec_cache);  in nvmet_file_ns_disable()
30 		ns->bvec_cache = NULL;  in nvmet_file_ns_disable()
31 		fput(ns->file);  in nvmet_file_ns_disable()
32 		ns->file = NULL;  in nvmet_file_ns_disable()
36 int nvmet_file_ns_enable(struct nvmet_ns *ns)  in nvmet_file_ns_enable()  argument
41 	if (!ns->buffered_io)  in nvmet_file_ns_enable()
44 	ns->file = filp_open(ns->device_path, flags, 0);  in nvmet_file_ns_enable()
45 	if (IS_ERR(ns->file)) {  in nvmet_file_ns_enable()
46 		ret = PTR_ERR(ns->file);  in nvmet_file_ns_enable()
48 			ns->device_path, ret);  in nvmet_file_ns_enable()
49 		ns->file = NULL;  in nvmet_file_ns_enable()
53 	nvmet_file_ns_revalidate(ns);  in nvmet_file_ns_enable()
59 	ns->blksize_shift = min_t(u8,  in nvmet_file_ns_enable()
60 			file_inode(ns->file)->i_blkbits, 12);  in nvmet_file_ns_enable()
62 	ns->bvec_cache = kmem_cache_create("nvmet-bvec",  in nvmet_file_ns_enable()
65 	if (!ns->bvec_cache) {  in nvmet_file_ns_enable()
70 	ns->bvec_pool = mempool_create(NVMET_MIN_MPOOL_OBJ, mempool_alloc_slab,  in nvmet_file_ns_enable()
71 			mempool_free_slab, ns->bvec_cache);  in nvmet_file_ns_enable()
73 	if (!ns->bvec_pool) {  in nvmet_file_ns_enable()
80 	ns->size = 0;  in nvmet_file_ns_enable()
81 	ns->blksize_shift = 0;  in nvmet_file_ns_enable()
82 	nvmet_file_ns_disable(ns);  in nvmet_file_ns_enable()
104 		call_iter = req->ns->file->f_op->write_iter;  in nvmet_file_submit_bvec()
107 		call_iter = req->ns->file->f_op->read_iter;  in nvmet_file_submit_bvec()
114 	iocb->ki_filp = req->ns->file;  in nvmet_file_submit_bvec()
129 			mempool_free(req->f.bvec, req->ns->bvec_pool);  in nvmet_file_io_done()
151 	pos = le64_to_cpu(req->cmd->rw.slba) << req->ns->blksize_shift;  in nvmet_file_execute_io()
152 	if (unlikely(pos + req->transfer_len > req->ns->size)) {  in nvmet_file_execute_io()
254 		req->f.bvec = mempool_alloc(req->ns->bvec_pool, GFP_KERNEL);  in nvmet_file_execute_rw()
259 	if (req->ns->buffered_io) {  in nvmet_file_execute_rw()
261 		    (req->ns->file->f_mode & FMODE_NOWAIT) &&  in nvmet_file_execute_rw()
271 	return errno_to_nvme_status(req, vfs_fsync(req->ns->file, 1));  in nvmet_file_flush()
304 		offset = le64_to_cpu(range.slba) << req->ns->blksize_shift;  in nvmet_file_execute_discard()
306 		len <<= req->ns->blksize_shift;  in nvmet_file_execute_discard()
307 		if (offset + len > req->ns->size) {  in nvmet_file_execute_discard()
313 		ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_execute_discard()
358 	offset = le64_to_cpu(write_zeroes->slba) << req->ns->blksize_shift;  in nvmet_file_write_zeroes_work()
360 			req->ns->blksize_shift);  in nvmet_file_write_zeroes_work()
362 	if (unlikely(offset + len > req->ns->size)) {  in nvmet_file_write_zeroes_work()
367 	ret = vfs_fallocate(req->ns->file, mode, offset, len);  in nvmet_file_write_zeroes_work()