298 	int error;  in shmem_add_to_page_cache()  local
309 		error = radix_tree_insert(&mapping->page_tree, index, page);  in shmem_add_to_page_cache()
311 		error = shmem_radix_tree_replace(mapping, index, expected,  in shmem_add_to_page_cache()
313 	if (!error) {  in shmem_add_to_page_cache()
323 	return error;  in shmem_add_to_page_cache()
332 	int error;  in shmem_delete_from_page_cache()  local
335 	error = shmem_radix_tree_replace(mapping, page->index, page, radswap);  in shmem_delete_from_page_cache()
342 	BUG_ON(error);  in shmem_delete_from_page_cache()
566 	int error;  in shmem_setattr()  local
568 	error = inode_change_ok(inode, attr);  in shmem_setattr()
569 	if (error)  in shmem_setattr()
570 		return error;  in shmem_setattr()
582 			error = shmem_reacct_size(SHMEM_I(inode)->flags,  in shmem_setattr()
584 			if (error)  in shmem_setattr()
585 				return error;  in shmem_setattr()
606 		error = posix_acl_chmod(inode, inode->i_mode);  in shmem_setattr()
607 	return error;  in shmem_setattr()
641 	int error = 0;  in shmem_unuse_inode()  local
660 		error = shmem_replace_page(pagep, gfp, info, index);  in shmem_unuse_inode()
681 			error = -ENOENT;  in shmem_unuse_inode()
689 	if (!error)  in shmem_unuse_inode()
690 		error = shmem_add_to_page_cache(*pagep, mapping, index,  in shmem_unuse_inode()
692 	if (error != -ENOMEM) {  in shmem_unuse_inode()
699 		if (!error) {  in shmem_unuse_inode()
706 	return error;  in shmem_unuse_inode()
717 	int error = 0;  in shmem_unuse()  local
731 	error = mem_cgroup_try_charge(page, current->mm, GFP_KERNEL, &memcg);  in shmem_unuse()
732 	if (error)  in shmem_unuse()
735 	error = -EAGAIN;  in shmem_unuse()
741 			error = shmem_unuse_inode(info, swap, &page);  in shmem_unuse()
745 		if (error != -EAGAIN)  in shmem_unuse()
751 	if (error) {  in shmem_unuse()
752 		if (error != -ENOMEM)  in shmem_unuse()
753 			error = 0;  in shmem_unuse()
760 	return error;  in shmem_unuse()
987 	int error;  in shmem_replace_page()  local
1017 	error = shmem_radix_tree_replace(swap_mapping, swap_index, oldpage,  in shmem_replace_page()
1019 	if (!error) {  in shmem_replace_page()
1025 	if (unlikely(error)) {  in shmem_replace_page()
1044 	return error;  in shmem_replace_page()
1063 	int error;  in shmem_getpage_gfp()  local
1079 		error = -EINVAL;  in shmem_getpage_gfp()
1115 				error = -ENOMEM;  in shmem_getpage_gfp()
1124 			error = -EEXIST;	/* try again */  in shmem_getpage_gfp()
1128 			error = -EIO;  in shmem_getpage_gfp()
1134 			error = shmem_replace_page(&page, gfp, info, index);  in shmem_getpage_gfp()
1135 			if (error)  in shmem_getpage_gfp()
1139 		error = mem_cgroup_try_charge(page, current->mm, gfp, &memcg);  in shmem_getpage_gfp()
1140 		if (!error) {  in shmem_getpage_gfp()
1141 			error = shmem_add_to_page_cache(page, mapping, index,  in shmem_getpage_gfp()
1155 			if (error) {  in shmem_getpage_gfp()
1160 		if (error)  in shmem_getpage_gfp()
1179 			error = -ENOSPC;  in shmem_getpage_gfp()
1185 				error = -ENOSPC;  in shmem_getpage_gfp()
1193 			error = -ENOMEM;  in shmem_getpage_gfp()
1202 		error = mem_cgroup_try_charge(page, current->mm, gfp, &memcg);  in shmem_getpage_gfp()
1203 		if (error)  in shmem_getpage_gfp()
1205 		error = radix_tree_maybe_preload(gfp & GFP_RECLAIM_MASK);  in shmem_getpage_gfp()
1206 		if (!error) {  in shmem_getpage_gfp()
1207 			error = shmem_add_to_page_cache(page, mapping, index,  in shmem_getpage_gfp()
1211 		if (error) {  in shmem_getpage_gfp()
1255 		error = -EINVAL;  in shmem_getpage_gfp()
1271 		error = -EEXIST;  in shmem_getpage_gfp()
1277 	if (error == -ENOSPC && !once++) {  in shmem_getpage_gfp()
1284 	if (error == -EEXIST)	/* from above or from radix_tree_insert */  in shmem_getpage_gfp()
1286 	return error;  in shmem_getpage_gfp()
1292 	int error;  in shmem_fault()  local
1353 	error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_CACHE, &ret);  in shmem_fault()
1354 	if (error)  in shmem_fault()
1355 		return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS);  in shmem_fault()
1543 	int error = 0;  in shmem_file_read_iter()  local
1573 		error = shmem_getpage(inode, index, &page, sgp, NULL);  in shmem_file_read_iter()
1574 		if (error) {  in shmem_file_read_iter()
1575 			if (error == -EINVAL)  in shmem_file_read_iter()
1576 				error = 0;  in shmem_file_read_iter()
1631 			error = -EFAULT;  in shmem_file_read_iter()
1639 	return retval ? retval : error;  in shmem_file_read_iter()
1654 	int error, page_nr;  in shmem_file_splice_read()  local
1683 	error = 0;  in shmem_file_splice_read()
1686 		error = shmem_getpage(inode, index, &page, SGP_CACHE, NULL);  in shmem_file_splice_read()
1687 		if (error)  in shmem_file_splice_read()
1708 			error = shmem_getpage(inode, index, &page,  in shmem_file_splice_read()
1710 			if (error)  in shmem_file_splice_read()
1745 		error = splice_to_pipe(pipe, &spd);  in shmem_file_splice_read()
1749 	if (error > 0) {  in shmem_file_splice_read()
1750 		*ppos += error;  in shmem_file_splice_read()
1753 	return error;  in shmem_file_splice_read()
1899 	int error, scan;  in shmem_wait_for_pins()  local
1903 	error = 0;  in shmem_wait_for_pins()
1937 				error = -EBUSY;  in shmem_wait_for_pins()
1954 	return error;  in shmem_wait_for_pins()
1966 	int error;  in shmem_add_seals()  local
2008 		error = -EPERM;  in shmem_add_seals()
2013 		error = mapping_deny_writable(file->f_mapping);  in shmem_add_seals()
2014 		if (error)  in shmem_add_seals()
2017 		error = shmem_wait_for_pins(file->f_mapping);  in shmem_add_seals()
2018 		if (error) {  in shmem_add_seals()
2025 	error = 0;  in shmem_add_seals()
2029 	return error;  in shmem_add_seals()
2044 	long error;  in shmem_fcntl()  local
2052 		error = shmem_add_seals(file, arg);  in shmem_fcntl()
2055 		error = shmem_get_seals(file);  in shmem_fcntl()
2058 		error = -EINVAL;  in shmem_fcntl()
2062 	return error;  in shmem_fcntl()
2073 	int error;  in shmem_fallocate()  local
2088 			error = -EPERM;  in shmem_fallocate()
2109 		error = 0;  in shmem_fallocate()
2114 	error = inode_newsize_ok(inode, offset + len);  in shmem_fallocate()
2115 	if (error)  in shmem_fallocate()
2119 		error = -EPERM;  in shmem_fallocate()
2127 		error = -ENOSPC;  in shmem_fallocate()
2148 			error = -EINTR;  in shmem_fallocate()
2150 			error = -ENOMEM;  in shmem_fallocate()
2152 			error = shmem_getpage(inode, index, &page, SGP_FALLOC,  in shmem_fallocate()
2154 		if (error) {  in shmem_fallocate()
2192 	return error;  in shmem_fallocate()
2223 	int error = -ENOSPC;  in shmem_mknod()  local
2227 		error = simple_acl_create(dir, inode);  in shmem_mknod()
2228 		if (error)  in shmem_mknod()
2230 		error = security_inode_init_security(inode, dir,  in shmem_mknod()
2233 		if (error && error != -EOPNOTSUPP)  in shmem_mknod()
2236 		error = 0;  in shmem_mknod()
2242 	return error;  in shmem_mknod()
2245 	return error;  in shmem_mknod()
2252 	int error = -ENOSPC;  in shmem_tmpfile()  local
2256 		error = security_inode_init_security(inode, dir,  in shmem_tmpfile()
2259 		if (error && error != -EOPNOTSUPP)  in shmem_tmpfile()
2261 		error = simple_acl_create(dir, inode);  in shmem_tmpfile()
2262 		if (error)  in shmem_tmpfile()
2266 	return error;  in shmem_tmpfile()
2269 	return error;  in shmem_tmpfile()
2274 	int error;  in shmem_mkdir()  local
2276 	if ((error = shmem_mknod(dir, dentry, mode | S_IFDIR, 0)))  in shmem_mkdir()
2277 		return error;  in shmem_mkdir()
2364 	int error;  in shmem_whiteout()  local
2370 	error = shmem_mknod(old_dir, whiteout,  in shmem_whiteout()
2373 	if (error)  in shmem_whiteout()
2374 		return error;  in shmem_whiteout()
2408 		int error;  in shmem_rename2()  local
2410 		error = shmem_whiteout(old_dir, old_dentry);  in shmem_rename2()
2411 		if (error)  in shmem_rename2()
2412 			return error;  in shmem_rename2()
2436 	int error;  in shmem_symlink()  local
2451 	error = security_inode_init_security(inode, dir, &dentry->d_name,  in shmem_symlink()
2453 	if (error) {  in shmem_symlink()
2454 		if (error != -EOPNOTSUPP) {  in shmem_symlink()
2456 			return error;  in shmem_symlink()
2458 		error = 0;  in shmem_symlink()
2471 		error = shmem_getpage(inode, 0, &page, SGP_WRITE, NULL);  in shmem_symlink()
2472 		if (error) {  in shmem_symlink()
2474 			return error;  in shmem_symlink()
2496 	int error = shmem_getpage(d_inode(dentry), 0, &page, SGP_READ, NULL);  in shmem_follow_link()  local
2497 	if (error)  in shmem_follow_link()
2498 		return ERR_PTR(error);  in shmem_follow_link()
2780 			goto error;  in shmem_parse_options()
2836 			goto error;  in shmem_parse_options()
2845 error:  in shmem_parse_options()
2856 	int error = -EINVAL;  in shmem_remount_fs()  local
2860 		return error;  in shmem_remount_fs()
2878 	error = 0;  in shmem_remount_fs()
2892 	return error;  in shmem_remount_fs()
2928 	int fd, error;  in SYSCALL_DEFINE2()  local
2948 		error = -EFAULT;  in SYSCALL_DEFINE2()
2954 		error = -EFAULT;  in SYSCALL_DEFINE2()
2960 		error = fd;  in SYSCALL_DEFINE2()
2966 		error = PTR_ERR(file);  in SYSCALL_DEFINE2()
2983 	return error;  in SYSCALL_DEFINE2()
3228 	int error;  in shmem_init()  local
3234 	error = shmem_init_inodecache();  in shmem_init()
3235 	if (error)  in shmem_init()
3238 	error = register_filesystem(&shmem_fs_type);  in shmem_init()
3239 	if (error) {  in shmem_init()
3246 		error = PTR_ERR(shm_mnt);  in shmem_init()
3257 	shm_mnt = ERR_PTR(error);  in shmem_init()
3258 	return error;  in shmem_init()
3453 	int error;  in shmem_read_mapping_page_gfp()  local
3456 	error = shmem_getpage_gfp(inode, index, &page, SGP_CACHE, gfp, NULL);  in shmem_read_mapping_page_gfp()
3457 	if (error)  in shmem_read_mapping_page_gfp()
3458 		page = ERR_PTR(error);  in shmem_read_mapping_page_gfp()