159 static void nfs_read_completion(struct nfs_pgio_header *hdr)  in nfs_read_completion()  argument
164 	if (test_bit(NFS_IOHDR_REDO, &hdr->flags))  in nfs_read_completion()
166 	while (!list_empty(&hdr->pages)) {  in nfs_read_completion()
167 		struct nfs_page *req = nfs_list_entry(hdr->pages.next);  in nfs_read_completion()
172 		if (test_bit(NFS_IOHDR_EOF, &hdr->flags)) {  in nfs_read_completion()
176 			if (bytes > hdr->good_bytes) {  in nfs_read_completion()
181 			} else if (hdr->good_bytes - bytes < req->wb_bytes) {  in nfs_read_completion()
184 				start += hdr->good_bytes - bytes;  in nfs_read_completion()
191 		if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) {  in nfs_read_completion()
192 			if (bytes <= hdr->good_bytes)  in nfs_read_completion()
195 				error = hdr->error;  in nfs_read_completion()
204 	hdr->release(hdr);  in nfs_read_completion()
207 static void nfs_initiate_read(struct nfs_pgio_header *hdr,  in nfs_initiate_read()  argument
212 	struct inode *inode = hdr->inode;  in nfs_initiate_read()
216 	rpc_ops->read_setup(hdr, msg);  in nfs_initiate_read()
217 	trace_nfs_initiate_read(inode, hdr->io_start, hdr->good_bytes);  in nfs_initiate_read()
242 			     struct nfs_pgio_header *hdr,  in nfs_readpage_done()  argument
245 	int status = NFS_PROTO(inode)->read_done(task, hdr);  in nfs_readpage_done()
249 	nfs_add_stats(inode, NFSIOS_SERVERREADBYTES, hdr->res.count);  in nfs_readpage_done()
251 				hdr->args.offset, hdr->res.eof);  in nfs_readpage_done()
261 			       struct nfs_pgio_header *hdr)  in nfs_readpage_retry()  argument
263 	struct nfs_pgio_args *argp = &hdr->args;  in nfs_readpage_retry()
264 	struct nfs_pgio_res  *resp = &hdr->res;  in nfs_readpage_retry()
267 	nfs_inc_stats(hdr->inode, NFSIOS_SHORTREAD);  in nfs_readpage_retry()
270 		nfs_set_pgio_error(hdr, -EIO, argp->offset);  in nfs_readpage_retry()
276 		hdr->pnfs_error = -EAGAIN;  in nfs_readpage_retry()
281 	hdr->mds_offset += resp->count;  in nfs_readpage_retry()
289 				struct nfs_pgio_header *hdr)  in nfs_readpage_result()  argument
291 	if (hdr->res.eof) {  in nfs_readpage_result()
292 		loff_t pos = hdr->args.offset + hdr->res.count;  in nfs_readpage_result()
293 		unsigned int new = pos - hdr->io_start;  in nfs_readpage_result()
295 		if (hdr->good_bytes > new) {  in nfs_readpage_result()
296 			hdr->good_bytes = new;  in nfs_readpage_result()
297 			set_bit(NFS_IOHDR_EOF, &hdr->flags);  in nfs_readpage_result()
298 			clear_bit(NFS_IOHDR_ERROR, &hdr->flags);  in nfs_readpage_result()
300 	} else if (hdr->res.count < hdr->args.count)  in nfs_readpage_result()
301 		nfs_readpage_retry(task, hdr);  in nfs_readpage_result()