296 	int error;  in shmem_add_to_page_cache()  local
307 		error = radix_tree_insert(&mapping->page_tree, index, page);  in shmem_add_to_page_cache()
309 		error = shmem_radix_tree_replace(mapping, index, expected,  in shmem_add_to_page_cache()
311 	if (!error) {  in shmem_add_to_page_cache()
321 	return error;  in shmem_add_to_page_cache()
330 	int error;  in shmem_delete_from_page_cache()  local
333 	error = shmem_radix_tree_replace(mapping, page->index, page, radswap);  in shmem_delete_from_page_cache()
340 	BUG_ON(error);  in shmem_delete_from_page_cache()
549 	int error;  in shmem_setattr()  local
551 	error = inode_change_ok(inode, attr);  in shmem_setattr()
552 	if (error)  in shmem_setattr()
553 		return error;  in shmem_setattr()
565 			error = shmem_reacct_size(SHMEM_I(inode)->flags,  in shmem_setattr()
567 			if (error)  in shmem_setattr()
568 				return error;  in shmem_setattr()
583 		error = posix_acl_chmod(inode, inode->i_mode);  in shmem_setattr()
584 	return error;  in shmem_setattr()
619 	int error = 0;  in shmem_unuse_inode()  local
638 		error = shmem_replace_page(pagep, gfp, info, index);  in shmem_unuse_inode()
659 			error = -ENOENT;  in shmem_unuse_inode()
667 	if (!error)  in shmem_unuse_inode()
668 		error = shmem_add_to_page_cache(*pagep, mapping, index,  in shmem_unuse_inode()
670 	if (error != -ENOMEM) {  in shmem_unuse_inode()
677 		if (!error) {  in shmem_unuse_inode()
684 	return error;  in shmem_unuse_inode()
695 	int error = 0;  in shmem_unuse()  local
709 	error = mem_cgroup_try_charge(page, current->mm, GFP_KERNEL, &memcg);  in shmem_unuse()
710 	if (error)  in shmem_unuse()
713 	error = -EAGAIN;  in shmem_unuse()
719 			error = shmem_unuse_inode(info, swap, &page);  in shmem_unuse()
723 		if (error != -EAGAIN)  in shmem_unuse()
729 	if (error) {  in shmem_unuse()
730 		if (error != -ENOMEM)  in shmem_unuse()
731 			error = 0;  in shmem_unuse()
738 	return error;  in shmem_unuse()
965 	int error;  in shmem_replace_page()  local
995 	error = shmem_radix_tree_replace(swap_mapping, swap_index, oldpage,  in shmem_replace_page()
997 	if (!error) {  in shmem_replace_page()
1003 	if (unlikely(error)) {  in shmem_replace_page()
1022 	return error;  in shmem_replace_page()
1041 	int error;  in shmem_getpage_gfp()  local
1057 		error = -EINVAL;  in shmem_getpage_gfp()
1093 				error = -ENOMEM;  in shmem_getpage_gfp()
1102 			error = -EEXIST;	/* try again */  in shmem_getpage_gfp()
1106 			error = -EIO;  in shmem_getpage_gfp()
1112 			error = shmem_replace_page(&page, gfp, info, index);  in shmem_getpage_gfp()
1113 			if (error)  in shmem_getpage_gfp()
1117 		error = mem_cgroup_try_charge(page, current->mm, gfp, &memcg);  in shmem_getpage_gfp()
1118 		if (!error) {  in shmem_getpage_gfp()
1119 			error = shmem_add_to_page_cache(page, mapping, index,  in shmem_getpage_gfp()
1133 			if (error) {  in shmem_getpage_gfp()
1138 		if (error)  in shmem_getpage_gfp()
1157 			error = -ENOSPC;  in shmem_getpage_gfp()
1163 				error = -ENOSPC;  in shmem_getpage_gfp()
1171 			error = -ENOMEM;  in shmem_getpage_gfp()
1180 		error = mem_cgroup_try_charge(page, current->mm, gfp, &memcg);  in shmem_getpage_gfp()
1181 		if (error)  in shmem_getpage_gfp()
1183 		error = radix_tree_maybe_preload(gfp & GFP_RECLAIM_MASK);  in shmem_getpage_gfp()
1184 		if (!error) {  in shmem_getpage_gfp()
1185 			error = shmem_add_to_page_cache(page, mapping, index,  in shmem_getpage_gfp()
1189 		if (error) {  in shmem_getpage_gfp()
1226 		error = -EINVAL;  in shmem_getpage_gfp()
1253 	if (swap.val && error != -EINVAL &&  in shmem_getpage_gfp()
1255 		error = -EEXIST;  in shmem_getpage_gfp()
1261 	if (error == -ENOSPC && !once++) {  in shmem_getpage_gfp()
1268 	if (error == -EEXIST)	/* from above or from radix_tree_insert */  in shmem_getpage_gfp()
1270 	return error;  in shmem_getpage_gfp()
1276 	int error;  in shmem_fault()  local
1337 	error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_CACHE, &ret);  in shmem_fault()
1338 	if (error)  in shmem_fault()
1339 		return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS);  in shmem_fault()
1527 	int error = 0;  in shmem_file_read_iter()  local
1557 		error = shmem_getpage(inode, index, &page, sgp, NULL);  in shmem_file_read_iter()
1558 		if (error) {  in shmem_file_read_iter()
1559 			if (error == -EINVAL)  in shmem_file_read_iter()
1560 				error = 0;  in shmem_file_read_iter()
1615 			error = -EFAULT;  in shmem_file_read_iter()
1623 	return retval ? retval : error;  in shmem_file_read_iter()
1638 	int error, page_nr;  in shmem_file_splice_read()  local
1667 	error = 0;  in shmem_file_splice_read()
1670 		error = shmem_getpage(inode, index, &page, SGP_CACHE, NULL);  in shmem_file_splice_read()
1671 		if (error)  in shmem_file_splice_read()
1692 			error = shmem_getpage(inode, index, &page,  in shmem_file_splice_read()
1694 			if (error)  in shmem_file_splice_read()
1729 		error = splice_to_pipe(pipe, &spd);  in shmem_file_splice_read()
1733 	if (error > 0) {  in shmem_file_splice_read()
1734 		*ppos += error;  in shmem_file_splice_read()
1737 	return error;  in shmem_file_splice_read()
1883 	int error, scan;  in shmem_wait_for_pins()  local
1887 	error = 0;  in shmem_wait_for_pins()
1921 				error = -EBUSY;  in shmem_wait_for_pins()
1938 	return error;  in shmem_wait_for_pins()
1950 	int error;  in shmem_add_seals()  local
1992 		error = -EPERM;  in shmem_add_seals()
1997 		error = mapping_deny_writable(file->f_mapping);  in shmem_add_seals()
1998 		if (error)  in shmem_add_seals()
2001 		error = shmem_wait_for_pins(file->f_mapping);  in shmem_add_seals()
2002 		if (error) {  in shmem_add_seals()
2009 	error = 0;  in shmem_add_seals()
2013 	return error;  in shmem_add_seals()
2028 	long error;  in shmem_fcntl()  local
2036 		error = shmem_add_seals(file, arg);  in shmem_fcntl()
2039 		error = shmem_get_seals(file);  in shmem_fcntl()
2042 		error = -EINVAL;  in shmem_fcntl()
2046 	return error;  in shmem_fcntl()
2057 	int error;  in shmem_fallocate()  local
2072 			error = -EPERM;  in shmem_fallocate()
2093 		error = 0;  in shmem_fallocate()
2098 	error = inode_newsize_ok(inode, offset + len);  in shmem_fallocate()
2099 	if (error)  in shmem_fallocate()
2103 		error = -EPERM;  in shmem_fallocate()
2111 		error = -ENOSPC;  in shmem_fallocate()
2132 			error = -EINTR;  in shmem_fallocate()
2134 			error = -ENOMEM;  in shmem_fallocate()
2136 			error = shmem_getpage(inode, index, &page, SGP_FALLOC,  in shmem_fallocate()
2138 		if (error) {  in shmem_fallocate()
2176 	return error;  in shmem_fallocate()
2207 	int error = -ENOSPC;  in shmem_mknod()  local
2211 		error = simple_acl_create(dir, inode);  in shmem_mknod()
2212 		if (error)  in shmem_mknod()
2214 		error = security_inode_init_security(inode, dir,  in shmem_mknod()
2217 		if (error && error != -EOPNOTSUPP)  in shmem_mknod()
2220 		error = 0;  in shmem_mknod()
2226 	return error;  in shmem_mknod()
2229 	return error;  in shmem_mknod()
2236 	int error = -ENOSPC;  in shmem_tmpfile()  local
2240 		error = security_inode_init_security(inode, dir,  in shmem_tmpfile()
2243 		if (error && error != -EOPNOTSUPP)  in shmem_tmpfile()
2245 		error = simple_acl_create(dir, inode);  in shmem_tmpfile()
2246 		if (error)  in shmem_tmpfile()
2250 	return error;  in shmem_tmpfile()
2253 	return error;  in shmem_tmpfile()
2258 	int error;  in shmem_mkdir()  local
2260 	if ((error = shmem_mknod(dir, dentry, mode | S_IFDIR, 0)))  in shmem_mkdir()
2261 		return error;  in shmem_mkdir()
2348 	int error;  in shmem_whiteout()  local
2354 	error = shmem_mknod(old_dir, whiteout,  in shmem_whiteout()
2357 	if (error)  in shmem_whiteout()
2358 		return error;  in shmem_whiteout()
2392 		int error;  in shmem_rename2()  local
2394 		error = shmem_whiteout(old_dir, old_dentry);  in shmem_rename2()
2395 		if (error)  in shmem_rename2()
2396 			return error;  in shmem_rename2()
2420 	int error;  in shmem_symlink()  local
2435 	error = security_inode_init_security(inode, dir, &dentry->d_name,  in shmem_symlink()
2437 	if (error) {  in shmem_symlink()
2438 		if (error != -EOPNOTSUPP) {  in shmem_symlink()
2440 			return error;  in shmem_symlink()
2442 		error = 0;  in shmem_symlink()
2455 		error = shmem_getpage(inode, 0, &page, SGP_WRITE, NULL);  in shmem_symlink()
2456 		if (error) {  in shmem_symlink()
2458 			return error;  in shmem_symlink()
2486 	int error = shmem_getpage(d_inode(dentry), 0, &page, SGP_READ, NULL);  in shmem_follow_link()  local
2487 	nd_set_link(nd, error ? ERR_PTR(error) : kmap(page));  in shmem_follow_link()
2771 			goto error;  in shmem_parse_options()
2827 			goto error;  in shmem_parse_options()
2836 error:  in shmem_parse_options()
2847 	int error = -EINVAL;  in shmem_remount_fs()  local
2851 		return error;  in shmem_remount_fs()
2869 	error = 0;  in shmem_remount_fs()
2883 	return error;  in shmem_remount_fs()
2919 	int fd, error;  in SYSCALL_DEFINE2()  local
2939 		error = -EFAULT;  in SYSCALL_DEFINE2()
2945 		error = -EFAULT;  in SYSCALL_DEFINE2()
2951 		error = fd;  in SYSCALL_DEFINE2()
2957 		error = PTR_ERR(file);  in SYSCALL_DEFINE2()
2974 	return error;  in SYSCALL_DEFINE2()
3217 	int error;  in shmem_init()  local
3223 	error = shmem_init_inodecache();  in shmem_init()
3224 	if (error)  in shmem_init()
3227 	error = register_filesystem(&shmem_fs_type);  in shmem_init()
3228 	if (error) {  in shmem_init()
3235 		error = PTR_ERR(shm_mnt);  in shmem_init()
3246 	shm_mnt = ERR_PTR(error);  in shmem_init()
3247 	return error;  in shmem_init()
3442 	int error;  in shmem_read_mapping_page_gfp()  local
3445 	error = shmem_getpage_gfp(inode, index, &page, SGP_CACHE, gfp, NULL);  in shmem_read_mapping_page_gfp()
3446 	if (error)  in shmem_read_mapping_page_gfp()
3447 		page = ERR_PTR(error);  in shmem_read_mapping_page_gfp()